Descriptor: "Énergie électrique" / Topic: 7. clean energy - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Énergie électrique"' showing total 92 results

Start Over Descriptor "Énergie électrique" Topic 7. clean energy

92 results on '"Énergie électrique"'

1. Carbon-carbon supercapacitors: Beyond the average pore size or how electrolyte confinement and inaccessible pores affect the capacitance

Author: Céline Merlet, Patrice Simon, El Hassane Lahrar, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut polytechnique de Grenoble (FRANCE), Université Paris Sciences & Lettres - PSL (FRANCE), Sorbonne Université (FRANCE), Université Grenoble Alpes - UGA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), Université de Haute Alsace - UHA (FRANCE), Université de Montpellier (FRANCE), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), and Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)
Subjects: Energie électrique, Materials science, Matériaux, FOS: Physical sciences, General Physics and Astronomy, chemistry.chemical_element, 02 engineering and technology, Electrolyte, 010402 general chemistry, 7. Clean energy, 01 natural sciences, Capacitance, Adsorption, Physical and Theoretical Chemistry, Supercapacitor, Condensed Matter - Materials Science, Nanoporous, Reinforced carbon–carbon, Materials Science (cond-mat.mtrl-sci), 021001 nanoscience & nanotechnology, 0104 chemical sciences, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, chemistry, Chemical physics, 0210 nano-technology, Porous medium, Carbon
Abstract: International audience; Carbon-carbon supercapacitors are high power electrochemical energy storage systems which store energy through reversible ion adsorption at the electrode-electrolyte interface. Due to the complex structure of the porous carbons used as electrodes, extracting structure-property relationships in these systems remains a challenge. In this work, we conduct molecular simulations of two model supercapacitors based on nanoporous electrodes with the same average pore size, a property often used when comparing porous materials, but different morphologies. We show that the carbon with the more ordered structure, with a well defined pore size, has a much higher capacitance than the carbon with the more disordered structure, and broader pore size distribution. We analyze the structure of the confined electrolyte and show that the ions adsorbed in the ordered carbon are present in larger quantities and are also more confined than for the disordered carbon. Both aspects favor a better charge separation and thus a larger capacitance. In addition, the disordered electrodes contain a significant amount of carbon atoms which are never in contact with the electrolyte, carry a close to zero charge and are thus not involved in the charge storage. The total quantities of adsorbed ions and degrees of confinement do not change much with the applied potential and as such, this work opens the door to computationally tractable screening strategies.
Published: 2021
Full Text: View/download PDF

2. Probing and Interpreting the Porosity and Tortuosity Evolution of Li-O 2 Cathodes on Discharge through a Combined Experimental and Theoretical Approach

Author: Pieter C. M. M. Magusin, Lauren E. Marbella, Clare P. Grey, Arnaud Demortière, Zeliang Su, Simon Engelke, Vincent De Andrade, Amangeldi Torayev, Céline Merlet, Alejandro A. Franco, Laboratoire réactivité et chimie des solides - UMR CNRS 7314 (LRCS), Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Advanced Lithium Energy Storage Systems - ALISTORE-ERI (ALISTORE-ERI), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Department of Chemistry [Cambridge, UK], University of Cambridge [UK] (CAM), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Department of Chemical Engineering [Columbia], University of Missouri [Columbia] (Mizzou), University of Missouri System-University of Missouri System, Argonne National Laboratory [Lemont] (ANL), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Grey, Clare [0000-0001-5572-192X], Apollo - University of Cambridge Repository, Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Columbia University (USA), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut polytechnique de Grenoble (FRANCE), Sorbonne Université (FRANCE), Université Grenoble Alpes - UGA (FRANCE), University of Cambridge (UNITED KINGDOM), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), ALISTORE-ERI (FRANCE), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), Université de Haute Alsace - UHA (FRANCE), Université de Montpellier (FRANCE), Réseau sur le Stockage Electrochimique de l'Energie - RS2E (Amiens, France), Argonne National Laboratory (Argonne, USA), Apollo-University Of Cambridge Repository, Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université de Toulouse (UT)
Subjects: Energie électrique, Materials science, Matériaux, 02 engineering and technology, Electrolyte, 010402 general chemistry, 01 natural sciences, 7. Clean energy, Tortuosity, Article, Physical and Theoretical Chemistry, Diffusion (business), Porosity, 021001 nanoscience & nanotechnology, Li-O2 Cathodes, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, General Energy, Knudsen diffusion, Chemical engineering, Particle, 0210 nano-technology, Pulsed field gradient, Porous medium
Abstract: International audience; Li-O2 batteries offer a high theoretical discharge capacity due to the formation of light discharged species such as Li2O2 , which fill the porous positive electrode. However, in practice, it is challenging to reach the theoretical capacity and completely utilize the full electrode pore volume during discharge. With the formation of discharge products, the porous medium evolves, and the porosity and tortuosity factor of the positive electrode are altered through shrinkage and clogging of pores. A pore shrinks as solid discharge products accumulate, the pore clogging when it is filled (or when access is blocked). In this study, we investigate the structural evolution of the positive electrode through a combination of experimental and computational techniques. Pulsed field gradient nuclear magnetic resonance results show that the electrode tortuosity factor changes much faster than suggested by the Bruggeman relation (an equation that empirically links the tortuosity factor to the porosity) and that the electrolyte solvent affects the tortuosity factor evolution. The latter is ascribed to the different abilities of solvents to dissolve reaction intermediates, which leads to different discharge product particle sizes: on discharging using 0.5M LiTFSI in dimethoxyethane, the tortuosity factor increases much faster than for discharging in 0.5M LiTFSI in tetraglyme. The correlation between a discharge product size and tortuosity factor is studied using a pore network model, which shows that larger discharge products generate more pore clogging. The Knudsen diffusion effect, where collisions of diffusing molecules with pore walls reduce the effective diffusion coefficients, is investigated using a kinetic Monte Carlo model and is found to have an insignificant impact on the effective diffusion coefficient for molecules in pores with diameters above 5 nm, i.e., most of the pores present in the materials investigated here. As a consequence, pore clogging is thought to be the main origin of tortuosity factor evolution.
Published: 2021
Full Text: View/download PDF

3. Frugal innovation for sustainable rural electrification

Author: Maria Pietrzak-David, Phok Chrin, Bunthern Kim, Pascal Maussion, LAboratoire PLasma et Conversion d'Energie (LAPLACE), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Institute of Technology of Cambodia [Cambodge] (KHM), COmmande et DIAgnostic des Systèmes Electriques (LAPLACE-CODIASE), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), and Institut of Technology of Cambodia - ITC (CAMBODIA)
Subjects: Energie électrique, 020209 energy, 020208 electrical & electronic engineering, Photovoltaic system, [SPI.NRJ]Engineering Sciences [physics]/Electric power, 1. No poverty, 02 engineering and technology, Frugal innovation, Environmental economics, Southeast asian, 7. Clean energy, Electronic equipment, Electricity generation, Generation of electrical energy, 11. Sustainability, 0202 electrical engineering, electronic engineering, information engineering, Sustainable system/technology, Generator excitation system, Rural electrification, Business, Rural area, Induction motor, Photovoltaic
Abstract: International audience; In this article an original solution is proposed by using wasted electric and electronic equipment (second-life components) to create the new power generation systems for remote rural areas. This frugal innovation for rural electrification guarantees an important support social, educational and economic development goals especially in Southeast Asian countries.
Published: 2020

4. Fast Charging Materials for High Power Applications

Author: Patrice Simon, Binson Babu, Andrea Balducci, Friedrich-Schiller-Universität = Friedrich Schiller University Jena [Jena, Germany], Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut polytechnique de Grenoble (FRANCE), Université Paris Sciences & Lettres - PSL (FRANCE), Sorbonne Université (FRANCE), Université Grenoble Alpes - UGA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), Réseau de stockage électrochimique de l’énergie - Energie RS2E (FRANCE), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), Université de Haute Alsace - UHA (FRANCE), Université de Montpellier (FRANCE), Friedrich-Schiller-Universität Jena (GERMANY), Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux - CIRIMAT (Toulouse, France), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), and Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)
Subjects: Energie électrique, Materials science, High power materials, Capacitive sensing, Matériaux, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, 7. Clean energy, Cathodic protection, law.invention, [SPI.MAT]Engineering Sciences [physics]/Materials, Hybrid systemsmetal-ion batteries, law, General Materials Science, Power semiconductor device, Renewable Energy, Sustainability and the Environment, [SPI.NRJ]Engineering Sciences [physics]/Electric power, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Engineering physics, 0104 chemical sciences, Anode, Power (physics), Capacitor, Hybrid system, Hybrid systems metal-ion batteries, 0210 nano-technology, Electrochemical capacitors, Realization (systems)
Abstract: International audience; An overview of fast charging materials for high power applications is given. The behavior at high current density of several anodic and cathodic materials that have been utilized in lithium‐, sodium‐, and potassium‐ion batteries is considered. Furthermore, the behavior of capacitive and pseudocapacitive materials suitable for electrochemical capacitors and, also, of those that have been utilized for the realization of hybrid‐ion capacitors, which are nowadays an interesting reality in the field of high power devices, is discussed. The advantages and limitations of all these materials are critically analyzed with the aim of understanding their impact on real devices. On the basis of this analysis, the most important aspects are identified, which should be addressed in the future for the realization of advanced high power devices.
Published: 2020
Full Text: View/download PDF

5. Life cycle assessment for a solar energy system based on reuse components for developing countries

Author: Bunthern Kim, Catherine Azzaro-Pantel, Pascal Maussion, Maria Pietrzak-David, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Laboratoire de génie chimique [ancien site de Basso-Cambo] (LGC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), COmmande et DIAgnostic des Systèmes Electriques (LAPLACE-CODIASE), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3)
Subjects: Energie électrique, Computer science, 020209 energy, Strategy and Management, Ingénierie de l'environnement, 02 engineering and technology, Reuse, 7. Clean energy, Industrial and Manufacturing Engineering, Energy storage, Life cycle assessment, 11. Sustainability, 0202 electrical engineering, electronic engineering, information engineering, Environmental impact assessment, Rural electrification, Life-cycle assessment, 0505 law, General Environmental Science, [SDE.IE]Environmental Sciences/Environmental Engineering, Power supply reuse, Renewable Energy, Sustainability and the Environment, business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, 05 social sciences, Photovoltaic system, Environmental economics, Solar energy, Second life applications -Battery reuse, Charge controller, 13. Climate action, 050501 criminology, Sensitivity analysis, business
Abstract: International audience; In many developing countries, the lack of electricity in rural areas is still a key issue for millions of people. The reuse of discarded components in renewable energy systems, based on the frugal innovation concept, has been identified as a solution for rural electrification in countries where renewable resource is plentiful. Specific emphasis is paid in this work to the application of reuse from an engineering viewpoint for a Renewable Energy System, including a “solar” element, composed of solar Photovoltaic (PV) panels and of modified Power Supply Units (PSUs), a “hydro” part and an energy storage system with used car batteries. The scientific objective of this work is to evaluate the environmental impact of this solution, considering only the solar element, as compared to a conventional system consisting of photovoltaic panels, lead-acid batteries, a charge controller and an inverter for small village consumption. For this purpose, Life Cycle Assessment (LCA) has been selected as a methodological framework and both solutions have been described and sized. The results have shown that in the reuse scenario, the impact of PSUs, Uninterruptable Power Supply Units (UPSs) and a microcontroller kit remains very low (0.12% of total impact) while PV modules contribute significantly (66% of total impact). Nevertheless, the consequences of reusing lead-acid batteries are still significant due to the combination of several effects: their weight, reduced efficiency and the need for frequent replacement. A 40% reduction of the environmental burden obtained by the reuse solution is clearly due to the absence of battery production impacts in the case of reuse. A sensitivity analysis has been performed to determine the impact of parameters such as component efficiency, lifetime and transportation distance on environmental impacts. The efficiency of repurposed PSUs and UPSs is the most significant parameter on the environmental impact categories in the reuse solution.
Published: 2019
Full Text: View/download PDF

6. Nanoporous carbon for electrochemical capacitive energy storage

Author: Patrice Simon, Zifeng Lin, Yih-Chyng Wu, Pierre-Louis Taberna, Hui Shao, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Sichuan University - SCU (CHINA), IUF, Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut polytechnique de Grenoble (FRANCE), Institut universitaire de France - IUF (FRANCE), Université Paris Sciences & Lettres - PSL (FRANCE), Sorbonne Université (FRANCE), Université Grenoble Alpes - UGA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), and Université de Haute Alsace - UHA (FRANCE)
Subjects: Energie électrique, Carbone, Materials science, Matériaux, chemistry.chemical_element, Nanotechnology, 02 engineering and technology, Electrolyte, 010402 general chemistry, Electrochemistry, 01 natural sciences, 7. Clean energy, Double layer (biology), Nanoporous, General Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Characterization (materials science), Electrochimie, Nanopore, chemistry, Electrode, 0210 nano-technology, Carbon, Stockage capactif, Energie
Abstract: International audience; The urgent need for eﬃcient energy storage devices has stimulated a great deal of research on electrochemical double layer capacitors (EDLCs). This review aims at summarizing the recent progress in nanoporous carbons, as the most commonly used EDLC electrode materials in the field of capacitive energy storage, from the viewpoint of materials science and characterization techniques. We discuss the key advances in the fundamental understanding of the charge storage mechanism in nanoporous carbon-based electrodes, including the double layer formation in confined nanopores. Special attention will be also paid to the important development of advanced in situ analytical techniques as well as theoretical studies to better understand the carbon pore structure, electrolyte ion environment and ion fluxes in these confined pores. We also highlight the recent progress in advanced electrolytes for EDLCs. The better understanding of the charge storage mechanism of nanoporous carbon-based electrodes and the rational design of electrolytes should shed light on developing the next-generation of EDLCs.
Published: 2020
Full Text: View/download PDF

7. Optimal Design of Eco-Industrial Parks with coupled energy networks addressing Complexity bottleneck through an Interdependence analysis

Author: Stéphane Negny, Marianne Boix, Ludovic Montastruc, Florent Mousqué, Serge Domenech, Laboratoire de génie chimique [ancien site de Basso-Cambo] (LGC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), and Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Subjects: Energie électrique, Network complexity, Interdependence, Computer science, 020209 energy, General Chemical Engineering, media_common.quotation_subject, 02 engineering and technology, 7. Clean energy, Multi-objective optimization, Net present value, Bottleneck, 020401 chemical engineering, 0202 electrical engineering, electronic engineering, information engineering, Génie chimique, 0204 chemical engineering, Génie des procédés, media_common, Multiobjective optimization, Génie civil, Industrial ecology, business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Renewable energies, Hybrid power system, Environmental economics, Utility system, Computer Science Applications, Renewable energy, [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering, Hybrid power, business
Abstract: International audience; By gathering in Eco-Industrial Parks (EIPs), companies obtain benefits from synergistic cooperation but it also creates a risk by increasing interdependencies. The aim of this paper is to provide a method for optimally design exchanges that takes into consideration real stakes of companies. This resolution method is assessed on a multi-period MILP model of coupled energy networks integrating a utility system producing steam at different pressure levels and a mutualized on-grid Hybrid Power System (HPS) providing electricity using Renewable Energy (RE) sources. Design concerns interconnections between companies such as boilers, turbines and power of RE sources. A multi-stage approach is developped to minimize network complexity and Net Present Value (NPV) of the overall network. Lastly, an interdependency analysis is proposed to choose the optimal solution. Tested on a case study involving 15 companies, the optimal exchanges have been raised to satisfy demands over four time periods.
Published: 2020
Full Text: View/download PDF

8. Electrohydrodynamic Thrust for In-Atmosphere Propulsion

Author: Olivier Praud, Nicolas Monrolin, Franck Plouraboué, Institut de mécanique des fluides de Toulouse (IMFT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Energie électrique, Materials science, Mécanique des fluides, Aerospace Engineering, Thrust, 02 engineering and technology, Propulsion, 01 natural sciences, 7. Clean energy, 010305 fluids & plasmas, Ion wind, 0103 physical sciences, Aerodynamic drag, Corona discharge, [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], Ionic wind, Lift-to-drag ratio, business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Electrical engineering, Mechanics, Aerodynamics, Electrohydrodynamic, 021001 nanoscience & nanotechnology, Electrohydrodynamics, 0210 nano-technology, business, Propulsive efficiency
Abstract: International audience; The electrohydrodynamic thrust generated by wire–cylinder electrodes under high dc voltage is experimentally analyzed. Some recent experimental studies have shown that electrohydrodynamic thrusters produced by corona discharge and ionic wind are able to deliver high thrust-to-power ratio, which reopens prospects for electrohydrodynamic propulsion. From simple considerations based on ultralight aircraft mass, aerodynamics, battery mass, and experimental electrohydrodynamic thrust densities, their potential for applications is showcased. Furthermore, an experimental study is performed, for which the experimental observations are presented in terms of electric field and thrust density. This allows a simplified and synthetic presentation of propulsive properties. Various experimental biases have been identified and corrected. The measure of time-periodic oscillations of the airflow in the back of the thruster pinpoints a possible wake effect due to the impact of ionic wind on electrodes. The variations of the associated drag are studied when varying the position of the collecting electrodes. It is shown that aerodynamic losses can be significant in experimental electrohydrodynamic thrusters.
Published: 2017
Full Text: View/download PDF

9. Facile and Scalable Preparation of Ruthenium Oxide‐Based Flexible Micro‐Supercapacitors

Author: Yohann Thimont, Sébastien Pinaud, Kevin Brousse, Marc Respaud, Bruno Chaudret, Claudie Josse, Son C. Nguyen, Patrice Simon, Raghda Makarem, Pierre-Louis Taberna, Pier-Francesco Fazzini, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Laboratoire de physique et chimie des nano-objets (LPCNO), Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC), Atelier Interuniversitaire de Micro-Nano Electronique (AIME), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Aix-Marseille Université - AMU (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut polytechnique de Grenoble (FRANCE), Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE), Institut National de la Santé et de la Recherche Médicale - INSERM (FRANCE), Sorbonne Université (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), Université de Haute Alsace - UHA (FRANCE), Université de Montpellier (FRANCE), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), ANR-16-CE17-0005,GENMSMD,Dissection génétique de la Susceptibilité Mendélienne aux infections mycobactériennes chez l'homme(2016), and ANR-16-CE24-0012,MINOTORES,MIcro-supercoNdensateur à porOsité contrôlée pour des applicaTions à fORte densité d'énErgie sur Substrat rigide et flexible(2016)
Subjects: Battery (electricity), Energie électrique, Materials science, Ruthenium oxide, Matériaux, Oxide, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, 7. Clean energy, Capacitance, Energy storage, [SPI.MAT]Engineering Sciences [physics]/Materials, Laser‐writing, chemistry.chemical_compound, Flexible micro‐supercapacitors, General Materials Science, Thin film, Supercapacitor, Renewable Energy, Sustainability and the Environment, [SPI.NRJ]Engineering Sciences [physics]/Electric power, 021001 nanoscience & nanotechnology, 0104 chemical sciences, chemistry, Pseudocapacitor, 0210 nano-technology
Abstract: International audience; Tremendous efforts have been invested in the development of the internet of things during the past 10 years. Implantable sensors still need embedded miniaturized energy harvesting devices, since commercialized thin films and microbatteries do not provide sufficient power densities and suffer from limited lifetime. Therefore, micro‐supercapacitors are good candidates to store energy and deliver power pulses while providing non‐constant voltage output with time. However, multistep expensive protocols involving mask aligners and sophisticated cleanrooms are used to prepare these devices. Here, a simple and versatile laser‐writing procedure to integrate flexible micro‐supercapacitors and microbatteries on current‐collector‐free polyimide foils is reported, starting from commercial powders. Ruthenium oxide (RuO2)‐based micro‐supercapacitors are prepared by laser irradiation of a bilayered tetrachloroauric acid (HAuCl4 · 3H2O)–cellulose acetate/RuO2 film deposited by spin‐coating, which leads to adherent Au/RuO2 electrodes with a unique pillar morphology. The as‐prepared microdevices deliver 27 mF cm−2/540 F cm−3 in 1 m H2SO4 and retain 80% of the initial capacitance after 10 000 cycles. This simple process is applied to make carbon‐based micro‐supercapacitors, as well as metal oxide based pseudocapacitors and battery electrodes, thus offering a straightforward solution to prepare low‐cost flexible microdevices at a large scale.
Published: 2020
Full Text: View/download PDF

10. Film-Forming Amines for the Corrosion Protection of Carbon Steels in Nuclear Power Plant Secondary Circuit Conditions: An Impedance Study

Author: Marion Roy, Nadine Pébère, Sophie Delaunay, Dominique You, Jonathan Tireau, Nicolas Caussé, Jordan Baux, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), EDF R&D (EDF R&D), EDF (EDF), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Paris-Saclay, Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), EDF (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Paris-Saclay (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)
Subjects: Permittivity, Energie électrique, Materials science, Corrosion Protection of Carbon, 020209 energy, Matériaux, chemistry.chemical_element, 02 engineering and technology, 7. Clean energy, Autoclave, Corrosion, [SPI.MAT]Engineering Sciences [physics]/Materials, chemistry.chemical_compound, 0202 electrical engineering, electronic engineering, information engineering, Materials Chemistry, Electrochemistry, Electrical impedance, Magnetite, Renewable Energy, Sustainability and the Environment, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Condensed Matter Physics, 6. Clean water, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Dielectric spectroscopy, chemistry, Chemical engineering, Film-Forming Amines, Degradation (geology), Carbon
Abstract: International audience; Octadecylamine (ODA) has been the subject of numerous investigations for the corrosion protection of carbon steels in nuclear pressurized water reactors (PWR). In the present work, electrochemical impedance spectroscopy was used to study and to compare the ODA behavior after different treatment temperatures (from 80 °C to 275 °C) representative of the secondary circuit of the PWR. The ODA films were characterized at room temperature. The impedance data analysis allowed the ODA film parameters (thickness and permittivity) to be obtained. The ODA film thickness was independent of the treatment conditions and was about 20 nm. At 120 °C and 220 °C, the presence of magnetite, formed during the treatment in the autoclave, strongly improved the corrosion protection afforded by the ODA films. An instantaneous inhibitive efficiency of 99.9% was assessed. At 275 °C, thermal degradation of the ODA molecules was shown.
Published: 2020
Full Text: View/download PDF

11. On the development of an original mesoscopic model to predict the capacitive properties of carbon-carbon supercapacitors

Author: Céline Merlet, El Hassane Lahrar, Patrice Simon, Anouar Belhboub, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut polytechnique de Grenoble (FRANCE), Sorbonne Université (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), Université de Haute Alsace - UHA (FRANCE), Université de Montpellier (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)
Subjects: Energie électrique, Materials science, Matériaux, General Chemical Engineering, Capacitive sensing, Capacitance, FOS: Physical sciences, Solvation, 02 engineering and technology, Electrolyte, 010402 general chemistry, 01 natural sciences, 7. Clean energy, Ion, Lattice model, chemistry.chemical_compound, Adsorption, Nanoporous carbon, Electrochemistry, Physics::Chemical Physics, Condensed Matter - Statistical Mechanics, Supercapacitor, Condensed Matter - Materials Science, Mesoscopic physics, Statistical Mechanics (cond-mat.stat-mech), Materials Science (cond-mat.mtrl-sci), 021001 nanoscience & nanotechnology, 0104 chemical sciences, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, chemistry, Chemical physics, Ionic liquid, 0210 nano-technology
Abstract: We report on the development of an original mesoscopic lattice model to predict structural, dynamical and capacitive properties of carbon-carbon supercapacitors. The model uses input from molecular simulations, such as free energy profiles to describe the ion adsorption, and experiments, such as energy barriers for transitions between lattice sites. The model developed is approximately 10,000 times faster than common molecular simulations. We apply this model to a set of carbon structures with well-defined pore sizes and investigate the solvation effect by doing simulations with neat ionic liquids as well as acetonitrile-based electrolytes. We show that our model is able to predict quantities of adsorbed ions and capacitances in a range compatible with experimental values. We show that there is a strong dependency of the calculated properties on the pore size and on the presence or absence of solvent. In particular, for neat ionic liquids, larger capacitances are obtained for smaller pores, while the opposite trend is observed for organic electrolytes., Comment: Preprint
Published: 2019
Full Text: View/download PDF

12. Carbons with Regular Pore Geometry Yield Fundamental Insights into Supercapacitor Charge Storage

Author: Berend Smit, Yifei Michelle Liu, Céline Merlet, Department of Chemical & Biomolecular Engineering [Berkeley] (CBE), University of California [Berkeley] (UC Berkeley), University of California (UC)-University of California (UC), Institut des Sciences et Ingénierie Chimiques (ISIC), Ecole Polytechnique Fédérale de Lausanne (EPFL), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), University of California [Berkeley], University of California-University of California, Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Polytechnique Fédérale de Lausanne - EPFL (SWITZERLAND), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Institut polytechnique de Grenoble (FRANCE), Sorbonne Université (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), University of California - UC Berkeley (USA), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), Université de Haute Alsace - UHA (FRANCE), Université de Montpellier (FRANCE), Institut des Sciences et Ingénierie Chimiques (Lausanne, Switzerland), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Energie électrique, Materials science, Matériaux, General Chemical Engineering, Geometry, 010402 general chemistry, 7. Clean energy, 01 natural sciences, Capacitance, Ion, Molecular dynamics, Partial charge, Affordable and Clean Energy, Supercapacitor Charge Storage, QD1-999, chemistry.chemical_classification, Supercapacitor, 010405 organic chemistry, Charge (physics), General Chemistry, Carbon, 0104 chemical sciences, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, Chemistry, chemistry, Chemical Sciences, Electrode, Counterion, Research Article
Abstract: We conduct molecular dynamics simulations of electrical double-layer capacitors (EDLCs) using a library of ordered, porous carbon electrode materials called zeolite templated carbons (ZTCs). The well-defined pore shapes of the ZTCs enable us to determine the influence of pore geometry on both charging dynamics and charge storage mechanisms in EDLCs, also referred to as supercapacitors. We show that charging dynamics are negatively correlated with the pore-limiting diameter of the electrode material and display signatures of both progressive charging and ion trapping. However, the equilibrium capacitance, unlike charging dynamics, is not strongly correlated to commonly used, purely geometric descriptors such as pore size. Instead, we find a strong correlation of capacitance to the charge compensation per carbon (CCpC), a descriptor we define in this work as the average charge of the electrode atoms within the coordination shell of a counterion. A high CCpC indicates efficient charge storage, as the strong partial charges of the electrode are able to screen counterion charge, enabling higher ion loading and thus more charge storage within the electrode at a fixed applied voltage. We determine that adsorption sites with a high CCpC tend to be found within pockets with a smaller radius of curvature, where the counterions are able to minimize their distance with multiple points on the electrode surface, and therefore induce stronger local partial charges., Molecular simulations of supercapacitors based on a library of templated porous carbons with regular structures yield new insights into the influence of pore geometry on the charge storage efficiency.
Published: 2019
Full Text: View/download PDF

13. System for experimental investigation of DBD excilamps in view of control and optimization of UV emission

Author: Arnold Wiesner, Hubert Piquet, Rafael Diez, David Florez, Pontificia Universidad Javeriana (PUJ), Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Universidad Sergio Arboledad (COLOMBIA), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Pontificia Universidad Javeriana (COLOMBIA), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Laboratoire Plasma et Conversion d'Energie - LAPLACE (Toulouse, France), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: Dielectric Barrier Discharge, Energie électrique, Electric Discharge Power Supply, General Computer Science, Computer science, Excimer Lamp, Current-mode, 010103 numerical & computational mathematics, 02 engineering and technology, Dielectric barrier discharge, Degrees of freedom (mechanics), Pulsed power, 7. Clean energy, 01 natural sciences, Theoretical Computer Science, law.invention, Current Mode, Data acquisition, Interleaved converters, law, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Energy transformation, 0101 mathematics, Numerical Analysis, Power converters, Applied Mathematics, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Maximization, Ultra Violet Generation (UV), Amplitude, Modeling and Simulation, Electrical network, 020201 artificial intelligence & image processing, DBD
Abstract: This paper presents the design of a system aimed at characterizing a diverse set of dielectric barrier discharge UV lamps. This experimental bench allows the study of the lamps performances regarding UV emission maximization and energy conversion optimization. It includes a current-mode pulsed power supply for the lamps, the design of which is detailed. This converter presents 3 degrees of freedom (DOF) can control and adjust independently the frequency, amplitude and duration of the current pulses injected into the lamps. Theoretical modeling of the lamps, by means of equivalent electrical circuits, is used to define the most interesting operating points to be explored, as well as for the converter’s design; these models are afterwards validated by experimental tests on the entire set of lamps. The operation of the bench is controlled by a supervising program: the latter manages the data acquisition and performs sweeps of the DOFs of the pulsed current. Examples of analyzes, oriented toward optimization of electric to UV energy conversion, are shown.
Published: 2019
Full Text: View/download PDF

14. Power estimation of a current supplied DBD considering the transformer parasitic elements

Author: Rafael Diez, Arnold Wiesner, Hubert Piquet, Vanesa Rueda, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Pontificia Universidad Javeriana (COLOMBIA), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Laboratoire Plasma et Conversion d'Energie - LAPLACE (Toulouse, France), Pontificia Universidad Javeriana (PUJ), Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: Dielectric Barrier Discharge, Energie électrique, Materials science, Electric Discharge Power Supply, 02 engineering and technology, Dielectric barrier discharge, Plasma sources, 01 natural sciences, 7. Clean energy, Capacitance, Industrial and Manufacturing Engineering, 010305 fluids & plasmas, law.invention, Current Mode, Parasitic capacitance, law, Electric model, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Waveform, Electrical and Electronic Engineering, Transformer, Dielectric barrier discharge (DBD), business.industry, 020208 electrical & electronic engineering, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Electrical engineering, Current source, Inductance, Control and Systems Engineering, DBD, Electric power, business
Abstract: International audience; Power estimation of a DBD device supplied by a current source converter is studied in this article, pointing out the prominent contribution of the transformer parasitic elements. The impact of the stray capacitance and magnetizing inductance is stated and an iterative method that estimates the electrical power and DBD waveforms is presented. Results show that the magnetizing inductance can enhance the electrical power without changing the current ratings of the converter and that the stray capacitance must be minimized. Moreover, the experimental results reveal the need for a better DBD model to properly estimate the power. In consequence, an improved model is proposed and validated using a DBD excimer lamp in a wide range of electrical operating conditions.
Published: 2019
Full Text: View/download PDF

15. Degradation of the luminance and impedance evolution analysis of an OLED under thermal and electrical stress

Author: Pascal Dupuis, Laurent Canale, Andrea Al Haddad, Antoine Picot, Georges Zissis, Pascal Maussion, LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique (CNRS), COmmande et DIAgnostic des Systèmes Electriques (LAPLACE-CODIASE), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Lumière et Matière (LAPLACE-LM), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), and Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Subjects: Energie électrique, Materials science, Semiconductor device fabrication, Luminance decay, Characterization, 02 engineering and technology, 01 natural sciences, 7. Clean energy, Luminance, Stress (mechanics), Degradation, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, OLED, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Electrical impedance, Estimation -Impedance, ComputingMilieux_MISCELLANEOUS, Parametric statistics, 010302 applied physics, business.industry, Design of experiments, 020208 electrical & electronic engineering, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Estimation - Impedance, Organic Light Emitting Diodes - Parameters, Organic Light Emitting Diodes -Parameters, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, business, Current density
Abstract: International audience; Organic light emitting diodes are one of the most innovative light sources. They do not require semiconductor fabrication techniques like the LED family, they are simple to construct and are used in many original applications. The inconvenient of this product is that it does not have a long lasting useful life with more then 10000 hours. Therefore, this paper will present a parametric method to design an aging model of the OLED based on luminance decay and electrical impedance evolution. Accelerated tests using thermal factor and currentdensity will be applied to large warm white OLED panels. A log-normal model for the luminance decay will be merged withdesign of experiments method to include the stress factors as well as impedance characteristics resulting in an effective degradation model that can estimate the lifetime of the OLED.
Published: 2019
Full Text: View/download PDF

16. Charge Storage Mechanisms of Single-Layer Graphene in Ionic Liquid

Author: Na Shu, Yanwu Zhu, Jianglin Ye, Kui Xu, Yih-Chyng Wu, Patrice Simon, Kun Ni, Pierre-Louis Taberna, University of Science and Technology of China [Hefei] (USTC), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Aix-Marseille Université - AMU (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut polytechnique de Grenoble (FRANCE), Sorbonne Université (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), Université de Haute Alsace - UHA (FRANCE), Université de Montpellier (FRANCE), University of Science and Technology of China - USTC (CHINA), Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux - CIRIMAT (Toulouse, France), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: Energie électrique, Matériaux, Interfaces, Electrolyte, 010402 general chemistry, Electrochemistry, 01 natural sciences, 7. Clean energy, Biochemistry, Capacitance, Catalysis, law.invention, Ion, [SPI.MAT]Engineering Sciences [physics]/Materials, chemistry.chemical_compound, Colloid and Surface Chemistry, law, Two dimensional materials, Electrodes, Ions, Graphene, [SPI.NRJ]Engineering Sciences [physics]/Electric power, General Chemistry, Quartz crystal microbalance, 0104 chemical sciences, Dielectric spectroscopy, chemistry, Chemical engineering, Ionic liquid, Electrical properties
Abstract: International audience; Graphene-based carbon materials are promising candidates for electrical double-layer (EDL) capacitors, and there is considerable interest in understanding the structure and properties of the graphene/electrolyte interface. Here, electrochemical impedance spectroscopy (EIS) and electrochemical quartz crystal microbalance (EQCM) are used to characterize the ion fluxes and adsorption on single-layer graphene in neat ionic liquid (EMI-TFSI) electrolyte. It is found that a positively charged ion-species desorption and ion reorganization dominate the double-layer charging during positive and negative polarizations, respectively, leading to the increase in EDL capacitance with applied potential.
Published: 2019
Full Text: View/download PDF

17. Effect of the carbon microporous structure on the capacitance of aqueous supercapacitors

Author: Abel Marin-Laflèche, Benjamin Rotenberg, Mathieu Salanne, Patrice Simon, Assane Sene, Barbara Daffos, Pierre-Louis Taberna, Matthieu Haefele, Nidhal Ganfoud, Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut polytechnique de Grenoble (FRANCE), Institut National de la Recherche en Informatique et en Automatique - INRIA (FRANCE), Sorbonne Université (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Versailles Saint-Quentin-en-Yvelines -UVSQ (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), Université de Haute Alsace - UHA (FRANCE), Université de Montpellier (FRANCE), Université Paris-Sud 11 (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), PHysicochimie des Electrolytes et Nanosystèmes InterfaciauX (PHENIX), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Maison de la Simulation (MDLS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut National de Recherche en Informatique et en Automatique (Inria)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)
Subjects: Energie électrique, Materials science, Matériaux, Energy Engineering and Power Technology, chemistry.chemical_element, 02 engineering and technology, Carbide derived carbon (CDC), 010402 general chemistry, 7. Clean energy, 01 natural sciences, Capacitance, Supercapacitors, Electrochemistry, General Materials Science, Supercapacitor, Aqueous solution, Renewable Energy, Sustainability and the Environment, Molecular dynamics simulations, Solvation, Microporous material, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, chemistry, Chemical engineering, Carbide-derived carbon, Cyclic voltammetry, 0210 nano-technology, [CHIM.OTHE]Chemical Sciences/Other, Carbon
Abstract: International audience; Using a combination of cyclic voltammetry experiments and molecular dynamics simulations, we study the effect of microporous carbon structure on the performance of aqueous supercapacitors using carbide derived carbon (CDC) electrodes. The structures investigated by molecular simulations are compatible with the experimental results for CDC synthesized at 800°C, but not with the other two materials (CDC-1100 and YP-50F), which are more graphitic. In fact, the specific capacitance obtained for the latter two are in good agreement with molecular simulations of graphite electrodes, assuming that all the charge is localized in the first plane in contact with the electrode (a very good approximation). Our molecular simulations further allow to examine the solvation of ions inside the electrodes. Unlike what was observed for large organic ions dissolved in acetonitrile, we find that most Na+ cations remain fully solvated. Overall, microporous carbons such as CDCs are good candidates for applications involving aqueous supercapacitors, in particular the harvesting of blue energy or desalination, but their performance remains to be optimized by tailoring their microstructure.
Published: 2019
Full Text: View/download PDF

18. Energy management optimization of a smart wind power plant comparing heuristic and linear programming methods

Author: Xavier Roboam, Bruno Sareni, Christophe Turpin, Sandra Ulrich Ngueveu, David Hernández-Torres, R. Bourbon, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Institut National Polytechnique (Toulouse) (Toulouse INP), Équipe Recherche Opérationnelle, Optimisation Combinatoire et Contraintes (LAAS-ROC), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: [INFO.INFO-CC]Computer Science [cs]/Computational Complexity [cs.CC], Mathematical optimization, Energie électrique, General Computer Science, Linear programming, Power station, Energy management, Heuristic (computer science), Computer science, 010103 numerical & computational mathematics, 02 engineering and technology, Linear programming Optimization, 01 natural sciences, 7. Clean energy, Theoretical Computer Science, 0202 electrical engineering, electronic engineering, information engineering, Heuristic method, 0101 mathematics, Numerical Analysis, Wind power, [INFO.INFO-GT]Computer Science [cs]/Computer Science and Game Theory [cs.GT], business.industry, Applied Mathematics, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Storage management, [INFO.INFO-RO]Computer Science [cs]/Operations Research [cs.RO], Solver, Grid, 13. Climate action, Modeling and Simulation, Systems design, 020201 artificial intelligence & image processing, Smart wind power plant, business
Abstract: International audience; This paper aims at optimizing the energy management of a smart power plant composed of wind turbines coupled with a Lithium Ion storage device in order to fulfill a power production commitment to the utility grid. The application of this case study is typically related to islanded electric grids. Our work particularly investigates and compares two classes of energy management strategies for design purpose: a first capable of providing the global optimum of the power flow planning from a Linear Programming (LP) approach thanks to a priori knowledge of future events in the environment; a second, based on a classical control heuristic without any a priori knowledge on the future, applicable in real time. Beyond the future objectives in terms of system design (techno-economical sizing optimization), the comparison of both approaches also aims at improving the predefined heuristic from the analysis of the ideal reference provided by the global LP optimizer. In this scope, a linear power flow model of the power plant is developed in compliance with a LP solver (Cplex). A particular attention is paid to the techno-economic optimization including storage cost evaluation, commitment failure penalties and exploitation gains. Simulations and optimizations are carried out over one year in order to take variability and seasonal features of the wind potential into account.
Published: 2019
Full Text: View/download PDF

19. Influences from solvents on charge storage in titanium carbide MXenes

Author: Patrick Urbankowski, Yury Gogotsi, Tyler S. Mathis, Naresh C. Osti, Patrice Simon, Zifeng Lin, Lukas Vlcek, Christine B. Hatter, Asia Sarycheva, Takeshi Torita, Xuehang Wang, Eugene Mamontov, Madhusudan Tyagi, Ke Li, Drexel University, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Sichuan University [Chengdu] (SCU), Oak Ridge National Laboratory [Oak Ridge] (ORNL), UT-Battelle, LLC, University of Tennessee [Chattanooga] (UTC), Murata Manufacturing (JAPAN), NIST Center for Neutron Research, National Institute of Standards and Technology [Gaithersburg] (NIST), University of Maryland [Baltimore], Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Drexel University (USA), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Institut polytechnique de Grenoble (FRANCE), National Institute of Standards and Technology - NIST (USA), Sichuan University - SCU (CHINA), Sorbonne Université (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), University of Maryland (USA), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), Université de Haute Alsace - UHA (FRANCE), Université de Montpellier (FRANCE), University of Tennessee - UT (USA), Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux - CIRIMAT (Toulouse, France), Oak Ridge National Laboratory - ORNL (Oak Ridge, USA), NIST Center for Neutron Research (Gaithersburg, USA), Réseau sur le Stockage Electrochimique de l'Energie - RS2E (Amiens, France), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Energie électrique, Materials science, Matériaux, Energy Engineering and Power Technology, chemistry.chemical_element, 02 engineering and technology, Electrolyte, 010402 general chemistry, Electrochemistry, 7. Clean energy, 01 natural sciences, Energy storage, Titanium carbide, [SPI.MAT]Engineering Sciences [physics]/Materials, chemistry.chemical_compound, Supercapacitor, Renewable Energy, Sustainability and the Environment, [SPI.NRJ]Engineering Sciences [physics]/Electric power, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Solvent, Fuel Technology, chemistry, Chemical engineering, Lithium, 0210 nano-technology, MXenes
Abstract: International audience; Pseudocapacitive energy storage in supercapacitor electrodes differs significantly from the electrical double-layer mechanism of porous carbon materials, which requires a change from conventional thinking when choosing appropriate electrolytes. Here we show how simply changing the solvent of an electrolyte system can drastically influence the pseudocapacitive charge storage of the two-dimensional titanium carbide, Ti3C2 (a representative member of the MXene family). Measurements of the charge stored by Ti3C2 in lithium-containing electrolytes with nitrile-, carbonate- and sulfoxide-based solvents show that the use of a carbonate solvent doubles the charge stored by Ti3C2 when compared with the other solvent systems. We find that the chemical nature of the electrolyte solvent has a profound effect on the arrangement of molecules/ions in Ti3C2, which correlates directly to the total charge being stored. Having nearly completely desolvated lithium ions in Ti3C2 for the carbonate-based electrolyte leads to high volumetric capacitance at high charge–discharge rates, demonstrating the importance of considering all aspects of an electrochemical system during development.
Published: 2019
Full Text: View/download PDF

20. Thermal Oxidation of Carbonaceous Nanomaterials Revisited: Evidence of Mechanism Changes

Author: Emmanuel Picheau, Ferdinand Hof, Alain Derré, Alain Pénicaud, Barbara Daffos, Centre de Recherche Paul Pascal (CRPP), Université de Bordeaux (UB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut polytechnique de Grenoble (FRANCE), Sorbonne Université (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), Université de Bordeaux (FRANCE), Université de Haute Alsace - UHA (FRANCE), Université de Montpellier (FRANCE), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), ANR-16-CE17-0005,GENMSMD,Dissection génétique de la Susceptibilité Mendélienne aux infections mycobactériennes chez l'homme(2016), ANR-16-CE24-0008,EdgeFiller,Remplissage sélectif des bords de nanotubes de carbone aplatis pour utilisation en nanoélectronique(2016), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: Thermal oxidation, Thermogravimetric analysis, Energie électrique, Materials science, Order of reaction, Matériaux, Carbon nanotubes, Thermodynamics, 02 engineering and technology, Activation energy, 010402 general chemistry, Kinetic energy, 01 natural sciences, 7. Clean energy, Chemical reaction, Catalysis, Isothermal process, Carbon black, 010405 organic chemistry, General Medicine, General Chemistry, Partial pressure, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 010406 physical chemistry, 0104 chemical sciences, Kinetics, 13. Climate action, Graphite, 0210 nano-technology
Abstract: International audience; Kinetic data, for example, activation energy and reaction order, are crucial for the understanding of chemical reactions and processes. Here, we describe a novel method for obtaining kinetic data based on thermogravimetric measurements (TGA) that exploits in each measurement multiple successive isothermal steps (SIS). We applied this method to the notoriously challenging carbon combustion process for vastly different carbons for oxygen molar fractions between 1.4 % and 90 %. Our obtained apparent EA values are within the wide range of results in the literature and vary in a systematic way with the oxygen partial pressure. The improved accuracy and large amount of obtainable data allowed us to show that the majority of experimentally obtained apparent data for apparent EA are neither in a kinetic regime nor in a diffusion‐controlled one but rather in a transition regime.
Published: 2019
Full Text: View/download PDF

21. Scaling of wind energy conversion system for time-accelerated and size-scaled experiments

Author: Christophe Turpin, Joaquin Pulido, Andy Varais, Javier M. Cabello, Eric Bru, Fabien Lacressonniere, Xavier Roboam, LAboratoire PLasma et Conversion d'Energie (LAPLACE), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Universidad Nacional de Rosario [Santa Fe], Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Universidad Nacional de Rosario - UNR (ARGENTINA), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Battery (electricity), Energie électrique, Similarity (geometry), General Computer Science, Computer science, 010103 numerical & computational mathematics, 02 engineering and technology, 01 natural sciences, 7. Clean energy, Turbine, Similarity, Theoretical Computer Science, Control theory, 0202 electrical engineering, electronic engineering, information engineering, 0101 mathematics, Scaling, Hardware-in-the-loop (HIL), Numerical Analysis, Mathematical model, Applied Mathematics, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Process (computing), Hardware-in-the-loop simulation, Dimensional analysis, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, Wind energy conversion, Wind system, Modeling and Simulation, Time acceleration, 020201 artificial intelligence & image processing
Abstract: International audience; This paper presents a scaling methodology based on dimensional analysis and applicable to systems’ mathematical models. The main goal of this research is to propose time-accelerated and size-scaled HIL (Hardware In the Loop) experiments, while keeping similarity with respect to the dynamics of the original system. The scaling process is presented using a simple wind turbine model. The scaling method is validated through simulations in which a wind turbine model and an electrochemical battery model are connected together. Finally, an experimental real-time validation is performed using physical emulators.
Published: 2019
Full Text: View/download PDF

22. Overvoltage at motor terminals in SiC-based PWM drives

Author: Bouazza Taghia, Bernardo Cougo, Hubert Piquet, Jean-Pierre Carayon, David Malec, Antoine Belinger, IRT Saint Exupéry - Institut de Recherche Technologique, Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Matériaux Diélectriques dans la Conversion d’Energie (LAPLACE-MDCE), Matériaux et Procédés Plasmas (LAPLACE-MPP), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), IRT Saint Exupéry - Institut de Recherche Technologique (FRANCE), Laboratoire Plasma et Conversion d'Energie - LAPLACE (Toulouse, France), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Energie électrique, Adjustable Speed Drives (ASD)- More Electrical Aircraft (MEA), Materials science, General Computer Science, Partial Discharges, 010103 numerical & computational mathematics, 02 engineering and technology, 01 natural sciences, 7. Clean energy, Theoretical Computer Science, Disruptive technology, More Electric Aircraft, 0202 electrical engineering, electronic engineering, information engineering, SiC inverter, 0101 mathematics, Overvoltage, Frequency modeling, Numerical Analysis, business.industry, Applied Mathematics, Adjustable Speed Drives (ASD), [SPI.NRJ]Engineering Sciences [physics]/Electric power, Electrical engineering, Power (physics), Voltage overshoot, Modeling and Simulation, Harness, Inverter, 020201 artificial intelligence & image processing, Transient (oscillation), business, Pulse-width modulation, Voltage
Abstract: International audience; Key points in the development of More Electrical Aircraft (MEA) are currently DC power distribution in higher voltage levels (540 V) and the use of disruptive technology such as Wide BandGap (WBG) semiconductors in power inverters. Using WBG components (SiC and GaN) increases the power converter mass density. However, fast switching of WBG components (tens of kV/s) induces voltage transient overshoots due to parasitic elements within the inverter. In addition, propagation and reflection phenomena along the harness connected to this inverter, even for small lengths, cause a significant voltage overshoot across the loads. Such overvoltage in Adjustable Speed Drives (ASD: association of inverter, harness and motor) supplied by the new HVDC 540 V aeronautical network could be fatal for the Electrical Insulation System (EIS). This paper proposes a fast and accurate modeling methodology to predict transient overvoltage; it allows us to analyze the impact of SiC inverter technology on overvoltage at motor terminals.
Published: 2018
Full Text: View/download PDF

23. Parametric study of dielectric barrier discharge excimer UV lamps supplied with controlled square current pulses

Author: Hubert Piquet, Rafael Diez, Antoine Belinger, David Florez, Arnold Wiesner, Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Pontificia Universidad Javeriana (PUJ), Matériaux et Procédés Plasmas (LAPLACE-MPP), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Pontificia Universidad Javeriana (COLOMBIA), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: Power supply, Dielectric Barrier Discharge, Energie électrique, Materials science, Electric Discharge Power Supply, Excimer Lamp, UV emission, 02 engineering and technology, Dielectric barrier discharge, 01 natural sciences, 7. Clean energy, 010305 fluids & plasmas, Current Mode, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, [PHYS.PHYS]Physics [physics]/Physics [physics], business.industry, Physique, 020208 electrical & electronic engineering, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Ultra Violet Generation (UV), Current source, Excimer lamp, Power (physics), Excimer lamps, Duty cycle, Optoelectronics, Square Shape, DBD, Electric power, Current (fluid), business
Abstract: A parametric study of a system dedicated to non-coherent UV emission, by means of DBD excilamps, supplied by a controlled square shape current source is proposed. The presentation highlights on the one hand the performances experimentally obtained by combining together a set of 20 different bulbs with different diameters, gap and wall thicknesses (all the bulbs have the same length and are filled with the same Xe-Cl gas mixture), with different electrical power supplying conditions: magnitude, frequency (in the 30 kHz – 200 kHz range) and duty cycle of the square shape current pulses injected into the bulb. The performances concern the average UV power, the efficiency of the bulb conversion (electrical power to UV) and the adjustability of the power. On the second hand, we present design considerations of the power supply which has been especially developed for the purpose of these experiments.
Published: 2018
Full Text: View/download PDF

24. Direct sizing and characterization of Energy Storage Systems in the Energy-Power plane

Author: Xavier Roboam, Javier M. Cabello, Christophe Turpin, Sergio Junco, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Universidad Nacional de Rosario - UNR (ARGENTINA), Institut National Polytechnique de Toulouse - INPT (FRANCE), Universidad Nacional de Rosario [Santa Fe], Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), and Université Fédérale Toulouse Midi-Pyrénées
Subjects: Energie électrique, Energy storage systems, General Computer Science, Computer science, Energy management, 010103 numerical & computational mathematics, 02 engineering and technology, 7. Clean energy, 01 natural sciences, Energy storage, Theoretical Computer Science, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, 0101 mathematics, Supercapacitor, Numerical Analysis, Plane (geometry), Applied Mathematics, [SPI.NRJ]Engineering Sciences [physics]/Electric power, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, Sizing, Power (physics), System requirements, Modeling and Simulation, 020201 artificial intelligence & image processing, Sizing method, Energy (signal processing), Energy vs power characterization
Abstract: International audience; This paper presents an original sizing method for Energy Storage Systems (ESS) based on directly matching their capabilities– as specified by their energy-power Safe Operation Area (SOA) in the Energy-Power (EP) plane – with the energy and powerdemand required to accomplish their missions. Starting from the system requirements and from an energy management strategy,the power demanded by a set of representative operating scenarios and its associated energy are calculated and represented astrajectories in the EP plane. The objective is to size the ESS such as its SOA contains these trajectories. Comparison betweendifferent technologies of Energy Storage Devices (ESDs) is possible using this SOA characterization. Special attention should bepaid to compare specific SOAs across devices. Diverse energy management strategies can be synthesized in the EP plane where theycan be compared and analyzed. The sizing method converges extremely fast and is suitable for its integration in an optimizationloop. The method allows to determine directly and efficiently the technology and the size most appropriate (in terms of indicatorssuch as mass or cost) to a given EP demand. In the paper, three different technologies (SuperCapacitor, Li-Ion and H2/O2 batteries)are characterized and compared in terms of sizing synthesis.
Published: 2018
Full Text: View/download PDF

25. A gas-templating strategy to synthesize CZTS nanocrystals for environment-friendly solar inks

Author: Oana Zaberca, Andrea Balocchi, Romain Bodeux, Delphine Lagarde, Vincent Foncrose, Xavier Marie, Jean-Yves Chane-Ching, Pascal Puech, Thomas Blon, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Laboratoire de physique et chimie des nano-objets (LPCNO), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Institut de Recherche et Développement sur l'Energie Photovoltaïque (IRDEP), EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC), Centre National de la Recherche Scientifique - CNRS (FRANCE), EDF (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-EDF R&D (EDF R&D), and EDF (EDF)-EDF (EDF)
Subjects: Solar cells, Energie électrique, Bubbles (in fluids), Defect concentrations, Materials science, Chalcogenide, Matériaux, Nucleation, Nanotechnology, engineering.material, 7. Clean energy, Gaslate, law.invention, chemistry.chemical_compound, Kesterite, law, Photovoltaics, Solar cell, [CHIM]Chemical Sciences, CZTS, Simultaneous formation, Kesterites, [PHYS]Physics [physics], Ink process, Chelation, Renewable Energy, Sustainability and the Environment, business.industry, Environment friendly, Nucleation stages, Gas-template, Nanocrystals, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry, Nanocrystal, Photoluminescence properties, engineering, Water splitting, Gases, business, High temperature gas
Abstract: A high-temperature gas-templating strategy is proposed to synthesize Cu2ZnSnS4 (CZTS) nanocrystals for all-aqueous solar inks. Our gas templating process route involves the in-situ generation and stabilization of nanosized gas bubbles into a molten KSCN-based reaction mixture at 400 degrees C. Chemical insights of the templating gas process are provided such as the simultaneous formation of gas bubbles and CZTS nuclei highlighting the crucial role of the nucleation stage on the sponge and resulting nanocrystals properties. The high porosity displayed by the resulting CZTS nanocrystals facilitates their further post-fragmentation, yielding individualized nanocrystals. The advantages of our high temperature gas templating route are illustrated by the following: (i) the low defect concentration displayed by the highly crystalline nanocrystals, (ii) the synthesis of CZTS nanocrystals displaying S2- polar surfaces after ligand exchange. The good photoluminescence properties recorded on the pure CZTS nanocrystals reveal potential for exploration of new complex chalcogenide nanocrystals useful for various applications including photovoltaics and water splitting. Here we demonstrate that using these building blocks, a CZTS solar cell can be successfully fabricated from an environment-friendly all-aqueous ink. (C) 2015 Elsevier B.V. All rights reserved.
Published: 2015
Full Text: View/download PDF

26. Optimized fuzzy rule-based energy management for a battery-less PV/wind-BWRO desalination system

Author: Mehdi Turki, Xavier Roboam, I. Ben Ali, Jamel Belhadj, Laboratoire des Systèmes Electriques - LSE (Tunis, Tunisie), Ecole Nationale d'Ingénieurs de Tunis (ENIT), Université de Tunis El Manar (UTM)-Université de Tunis El Manar (UTM), Université de Jendouba (UJ), Université de Tunis, Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Tunis - El Manar (TUNISIA), Université de Jendouba (TUNISIA), Université de Tunis (TUNISIA), Laboratoire Plasma et Conversion d'Energie - LAPLACE (Toulouse, France), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: Energie électrique, Energy management, 020209 energy, Water energy production, 02 engineering and technology, 7. Clean energy, Desalination, Fuzzy logic, Industrial and Manufacturing Engineering, Renewable energy sources, 0202 electrical engineering, electronic engineering, information engineering, [INFO]Computer Science [cs], Energy supply, Electrical and Electronic Engineering, Reverse osmosis, Process engineering, Genetic algorihtm optimization, Civil and Structural Engineering, business.industry, Mechanical Engineering, Water storage, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Building and Construction, 021001 nanoscience & nanotechnology, Pollution, 6. Clean water, Renewable energy, General Energy, 13. Climate action, Environmental science, 0210 nano-technology, business, Efficient energy use
Abstract: International audience; Coupling water desalination processes with Renewable Energy Sources (RESs) can be a sustainable and ecological approach to the global water/energy supply crisis. In this regard, small-scale standalone battery-less Brackish Water Reverse Osmosis (BWRO) desalination system powered by a hybrid PV/Wind RES is expected to meet freshwater demand of a small isolated community. One particularity of the proposed architecture deals with the absence of electrochemical storage; only taking benefit of hydraulic storage in water tanks when RE is available. This study puts forward the prime importance of Water/Power flows management optimization. For this purpose, an online Fuzzy Logic-based Energy Management Strategy (FLEMS) is proposed. Firstly, a Hand-Made Fuzzy Inference System (HMFIS) was designed to identify the instantaneous power sharing between the system hydro-mechanical processes (well pumping, water storage and desalination processes). Secondly, an offline genetic algorithm optimization was applied on the HMFIS design in order to optimize the power sharing factor and maximize freshwater production. Then, when applying unknown power profile, the optimized FLEMS demonstrated its performance to improve the system energy efficiency and enhance the brackish water (from 16.7% in autumn to 63% in summer) and freshwater production (to 3.3% during autumn for instance) compared with the HMFIS-based EMS.
Published: 2018
Full Text: View/download PDF

27. Power Optimization by Cooling Photovoltaic Plants as a Dynamic Self-adaptive Regulation Problem

Author: Marie-Pierre Gleizes, Carole Bernon, Valérian Guivarch, Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), Systèmes Multi-Agents Coopératifs (IRIT-SMAC), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Université Toulouse III - Paul Sabatier (UT3), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: Energie électrique, Computer science, Multi-agent system, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Photovoltaic system, Control (management), Control engineering, Photovoltaic energy, 7. Clean energy, Power optimization, Rainwater harvesting, 13. Climate action, Control, Production (economics), State (computer science), Self-adaptation, Multi-agent System, Energy (signal processing)
Abstract: International audience; This paper shows an approach to control cooling devices for photovoltaic plants in order to optimize the energy production thanks to a limited reserve of harvested rainwater. This is a complex problem, considering the dynamic environment and the interdependence of the parameters, such as the weather data and the state of the photovoltaic panels. Our claim is to design a system composed of autonomous components cooperating in order to obtain an emergent efficient control.
Published: 2018
Full Text: View/download PDF

28. Sizing methodology based on design of experiments for freshwater and electricity production from multi-source renewable energy systems

Author: Gerard Champenois, Malek Zaibi, Bruno Sareni, Habib Cherif, Xavier Roboam, Jamel Belhadj, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Poitiers (FRANCE), Ecole Nationale Supérieure d’Ingénieurs de Poitiers - ENSIP (FRANCE), Université de Tunis - El Manar (TUNISIA), Laboratoire d'Informatique et d'Automatique pour les Systèmes (LIAS), Université de Poitiers-ENSMA, Laboratoire des Systèmes Electriques - LSE (Tunis, Tunisie), Ecole Nationale d'Ingénieurs de Tunis (ENIT), Université de Tunis El Manar (UTM)-Université de Tunis El Manar (UTM), Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Institut National Polytechnique de Toulouse - INPT (FRANCE), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3)
Subjects: Optimal design, Energie électrique, Renewable energy, Computer science, Energy management, 020209 energy, General Chemical Engineering, 02 engineering and technology, Isolated region, 7. Clean energy, 0202 electrical engineering, electronic engineering, information engineering, General Materials Science, Process engineering, Water Science and Technology, Meta-model, business.industry, Mechanical Engineering, Electric potential energy, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Photovoltaic system, General Chemistry, 6. Clean water, Sizing, Electricity generation, Electricity, business, Embodied energy, Design of experiments
Abstract: International audience; In remote areas, the vital need is production of drinking water and the provision of electrical energy for housing.Often the only sources of energy are based on renewable energies with storage to create a local micro-network.This paper investigates the optimal design of embodied energy for water treatment by reverse osmosis, comingfrom brackish water (6 g/l) and with a double storage that is done in a drinking water tank and in batteries forelectricity. Taking account wind and photovoltaic potentials in such system for assessing its performance impliesits simulation over long periods of time. This can drastically increase the CPU time cost related to the design step,especially if the system energy management and sizing are sequentially optimized into a two-level optimizationprocess. In order to solve this problem and accelerate the system simulation, meta-models are used for representingthe system constraints and objectives. These meta-models are built by the design of experiments method. From realistic data, the results of this paper show that the contribution of the meta-models divides by two or three the design time by obtaining values of the sizing parameters close to the dynamic simulator depicting the real operation of the whole system.
Published: 2018
Full Text: View/download PDF

29. Power for Aircraft Emergencies : A Hybrid Proton-Exchange Membrane H2/O2 Fuel Cell and Ultracapacitor System

Author: Bruno Sareni, O. Rallières, Eric Bru, Christophe Turpin, Marcos Garcia Arregui, Xavier Roboam, B. Morin, Nicolas Roux, Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT), ARC-Nucleart CEA Grenoble (NUCLEART), Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux (LITEN), Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), General Electric, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Centre national de recherches météorologiques (CNRM), and Centre National de la Recherche Scientifique (CNRS)-Météo France
Subjects: Supercapacitor, Energie électrique, Materials science, 020209 energy, 020208 electrical & electronic engineering, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Ultracapcitors, Energy Engineering and Power Technology, Proton exchange membrane fuel cell, Context (language use), 02 engineering and technology, Aircraft emergencies, Converters, 7. Clean energy, Automotive engineering, DC-BUS, Power (physics), [SPI]Engineering Sciences [physics], 0202 electrical engineering, electronic engineering, information engineering, Power sharing, Electrical and Electronic Engineering, Fuel cells, ComputingMilieux_MISCELLANEOUS, Ram air turbine, Voltage
Abstract: International audience; On the context of aviation, this article looks at replacing a ram air turbine(RAT) with a hybrid proton-exchange membrane (PEM) hydrogen/oxygen (H2/O2)fuel cell and ultracapacitor system, starting from a theoretical perspective. The structure we propose has two static power converters: one associated with fuel cells and the other with ultracapacitors. The energy management principle presented (frequency sharing) enables two types of control. First, the converter associated with the fuel cell manages the voltage of the dc bus, and then the converter associated with the ultracapacitors controls the high-frequency currents. Second, the voltage of the dc bus is oppositely controlled by the ultracapacitor converter. An experimental validation (at a reduced ratio scale of 1:10) allows for an analysis of the proposed principles. The experiment is conducted in two stages. In the initial validation,a fuel cell physical emulator is used as the main source, before introducing an actual fuel cell.
Published: 2017
Full Text: View/download PDF

30. High energy density of primary lithium batteries working with sub-fluorinated few walled carbon nanotubes cathode

Author: Emmanuel Flahaut, Marc Dubois, Yasser Ahmad, Katia Guérin, Andre Hamwi, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE), Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), SIGMA Clermont (FRANCE), Institut de Chimie de Clermont-Ferrand (ICCF), SIGMA Clermont (SIGMA Clermont)-Institut de Chimie du CNRS (INC)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: Energie électrique, Yield (engineering), Materials science, chemistry.chemical_element, Nanotechnology, 02 engineering and technology, Carbon nanotube, 010402 general chemistry, Electrochemistry, Fluorinated carbon nanotubes, 7. Clean energy, 01 natural sciences, law.invention, symbols.namesake, Energy density, law, Materials Chemistry, Génie chimique, Mechanical Engineering, Metals and Alloys, [CHIM.MATE]Chemical Sciences/Material chemistry, Lithium battery, Extra-capacity, 021001 nanoscience & nanotechnology, Cathode, 0104 chemical sciences, chemistry, Chemical engineering, Mechanics of Materials, Reinforcement effect, symbols, Lithium, 0210 nano-technology, Raman spectroscopy, [CHIM.OTHE]Chemical Sciences/Other, Carbon
Abstract: International audience; Fluorinated carbon nanotubes used as cathode material exhibit a capacity exceeding the theoretical value when used in primary lithium battery. The measured experimental capacity, the faradic yield and the energy density were increased, exceeding the expected theoretical values for sub-fluorinated few walled carbon nanotubes (FWCNTs).Although the molar carbon/fluorine ratio was only of 0.37 (i.e CF0.37), an experimental capacity of 900 mAh.g−1 was obtained which is higher than the theoretical value of 521 mAh.g−1. With the same material, an unprecedented energy density of 2565 Wh kg−1 was reached associated with a faradic yield of 172%. The materials were deeply characterized using TEM, Raman and solid state 13C and 19F NMR in order to explain the extra-capacity. Such high electrochemical values can be correlated to the reinforcement effect of the central tube(s), coupled with a low amount of structural defects.
Published: 2017
Full Text: View/download PDF

31. Ultracentrifugation: An effective novel route to ultrafast nanomaterials for hybrid supercapacitors

Author: Katsuhiko Naoi, Patrice Simon, Etsuro Iwama, Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut polytechnique de Grenoble (FRANCE), Sorbonne Université (FRANCE), Tokyo University of Agriculture and Technology - TUAT (JAPAN), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), Université de Haute Alsace - UHA (FRANCE), Université de Montpellier (FRANCE), Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux - CIRIMAT (Toulouse, France), Tokyo University of Agriculture and Technology (TUAT), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Institut National Polytechnique de Toulouse - INPT (FRANCE), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)
Subjects: Energie électrique, Materials science, Matériaux, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, 7. Clean energy, Energy storage, Analytical Chemistry, Nanomaterials, law.invention, ultracentrifugation, law, Electrochemistry, Porosity, nanomaterials, Supercapacitor, business.industry, High voltage, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Renewable energy, Capacitor, hybrid supercapacitors, 0210 nano-technology, business, Energy source, [CHIM.OTHE]Chemical Sciences/Other
Abstract: International audience; Energy storage devices are some of the most important environmental technologies that are highly influential in advancing our life in the future society. Specifically, electrochemical capacitor is an energy facilitator that exhibits an efficient/economical charging and discharging characteristics with long lifespan. Thus, the capacitor technology is regarded as promising due to an increasing effectiveness when combined with renewable (solar/wind/micro hydraulic) energy sources. In this connection, Li–ion-based hybrid supercapacitors and their functional materials are being vigorously researched in hopes to improve their capacity/voltage and therefore their energy density. Transition metal oxides are among the most popular materials utilized in this purpose. Thanks to high voltage and associated high energy density, they are tuned as both high energy and high power materials. In recent years, the structural/textural properties of oxides, including particle size, crystallinity, defects, and porosity, were successfully fine-tuned to achieve high rate performance over 300 C . The present review will describe pseudo-capacitive nanosized oxides prepared with in situ synthesis technique called “ultracentrifugation”, showing ultrafast electrochemical response even more than EDLC.
Published: 2017
Full Text: View/download PDF

32. Measuring rotor-speed with a smartphone camera

Author: Thanh-Chi Le, Axel Carlier, Quoc-Dzung Phan, Pascal Maussion, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), Ho Chi Minh City University of Technology - HCMUT (VIETNAM), Institut de Recherche en Informatique de Toulouse - IRIT (Toulouse, France), Ho Chi Minh City University of Technology (HCMUT), Real Expression Artificial Life (IRIT-REVA), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Institut National Polytechnique (Toulouse) (Toulouse INP), COmmande et DIAgnostic des Systèmes Electriques (LAPLACE-CODIASE), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Energie électrique, Computer science, Real-time computing, Exposure time, Measure (physics), Image processing, 02 engineering and technology, 01 natural sciences, 7. Clean energy, law.invention, Grayscale, law, 0202 electrical engineering, electronic engineering, information engineering, Traitement du signal et de l'image, Velocity measurement, Region of interest, Rest (physics), Speed measurement, Frames per second, Background subtraction, Rotor (electric), 020208 electrical & electronic engineering, 010401 analytical chemistry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Technologies Émergeantes, Rotational speed, Frame rate, 0104 chemical sciences, [INFO.INFO-ET]Computer Science [cs]/Emerging Technologies [cs.ET], [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing
Abstract: International audience; This paper presents a new method to measure a rotor speed using a smartphone camera. An image processing algorithm is proposed to measure the rotation speed, based on the periodic detection of a mark placed on the rotor. Experiments demonstrate our method can estimate rotor speed with a good precision, provided that the camera frame rate is high enough. The method could be very useful for periodic speed measurement in applications where a sensor is prohibited, for example in pico-hydro-turbine for rural electrification. Since the smartphones are almost everywhere, they contribute to cost and environmental impact reductions in such solutions. The rest of the system is composed of reused components according to the principles of frugal innovation.
Published: 2017

33. Stochastic programming approach for TEP optimization considering RES integration in electricity market

Author: George Cristian Lazaroiu, Philippe Duquenne, Dario Zaninelli, Mariacristina Roscia, Catalina Alexandra Sima, Virgil Dumbrava, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), University Politechnica of Bucharest (ROMANIA), Politecnico di Milano (ITALY), Università degli Studi di Bergamo - UniBG (ITALY), Laboratoire de Génie Chimique - LGC (Toulouse, France), Institut National Polytechnique de Toulouse - INPT (FRANCE), University Politechnica Bucuresti, Università degli studi di Bergamo (UniBG), Politecnico di Milano [Milan] (POLIMI), Laboratoire de génie chimique [ancien site de Basso-Cambo] (LGC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université Fédérale Toulouse Midi-Pyrénées
Subjects: [SPI.OTHER]Engineering Sciences [physics]/Other, Energie électrique, Mathematical optimization, Computer science, Total cost, 020209 energy, Reliability (computer networking), Stochastic programming, Energy Engineering and Power Technology, Power system reliability, 02 engineering and technology, 7. Clean energy, Renewable energy sources, Nonlinear programming, Electric power system, Mathematical model, Electricity market, Autre, 0202 electrical engineering, electronic engineering, information engineering, Decision support optimization, Renewable Energy, Sustainability and the Environment, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Production, Reliability, Electric power transmission, Settore ING-IND/33 - Sistemi Elettrici per L'Energia, Power transmission lines, Programming, Transmission expansion planning, Stochastic optimization, Renewable Energy, Sustainability and the Environment, Investment
Abstract: International audience; Transmission expansion planning (TEP) is helping the system operator to decide the optimal solution for building new lines and in the same time to increase the reliability and safety of the existing power system. The proposed problem is a mixed-integer nonlinear programming problem (MINLP) and it is solved using stochastic programming. Stochastic programming is applied when uncertain environment occurs, in this case the uncertain environment refers to the production of renewable energy sources (RES) and its dependence on the short-term weather conditions. Stochastic Optimization weights all scenarios considered in this paper in order to obtain an expected total cost. The expected total cost includes the cost associated with the construction of new transmission lines, generation cost and load shedding cost.
Published: 2017
Full Text: View/download PDF

34. One-step synthesis of highly reduced graphene hydrogels for high power supercapacitor applications

Author: Barbara Daffos, Lionel Dubois, Anass Benayad, Florence Duclairoir, Yves Chenavier, David Aradilla, Harish Banda, Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Institut polytechnique de Grenoble (FRANCE), Sorbonne Université (FRANCE), Université Grenoble Alpes - UGA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Nantes (FRANCE), Université de Picardie Jules Verne (FRANCE), Université de Pau et des Pays de l'Adour - UPPA (FRANCE), Université de Montpellier (FRANCE), SYstèmes Moléculaires et nanoMatériaux pour l’Energie et la Santé (SYMMES), Institut de Chimie du CNRS (INC)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Polymères Conducteurs Ioniques (PCI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux (LITEN), Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Reconnaissance Ionique et Chimie de Coordination (RICC), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Energie électrique, Materials science, Matériaux, Oxide, Energy Engineering and Power Technology, One-Step, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, 7. Clean energy, Capacitance, Graphene hydrogels, law.invention, [SPI.MAT]Engineering Sciences [physics]/Materials, chemistry.chemical_compound, Aqueous electrolyte, law, Supercapacitors, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, Monolith, Supercapacitor, geography, geography.geographical_feature_category, Renewable Energy, Sustainability and the Environment, Graphene, [SPI.NRJ]Engineering Sciences [physics]/Electric power, 021001 nanoscience & nanotechnology, [SDE.ES]Environmental Sciences/Environmental and Society, 0104 chemical sciences, chemistry, Self-healing hydrogels, 0210 nano-technology, Current density
Abstract: International audience; Graphene hydrogels with high electrical conductivity were prepared by a one-step process using hydrazine hydrate as gel assembly agent (GH-HD). Conventional two-step process of gel formation and further reduction to prepare highly conducting gels was replaced by a single step involving equivalent amount of hydrazine. Optimized graphene oxide concentration was established to facilitate such monolith formation. Extensive characterization and control studies enabled understanding of the material properties and gel formation mechanism. The synthesized gel shows a high electrical conductivity of 1141 S/m. The supercapacitor based on GH-HD delivers a high specific capacitance of 190 F/g at a current density of 0.5 A/g and 123 F/g at very high current density of 100 A/g. Furthermore, excellent power capability and cyclic stability were also observed. 3D macroporous morphology of GH-HD makes it ideal for high rate supercapacitor applications.
Published: 2017
Full Text: View/download PDF

35. A High Voltage High Frequency Resonant Inverter for Supplying DBD Devices with Short Discharge Current Pulses

Author: Julio Brandelero, Xavier Bonnin, Thierry Meynard, Hubert Piquet, Nicolas Videau, LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, CIRTEM (CIRTEM), Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Convertisseurs Statiques (LAPLACE-CS), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), CIRTEM (FRANCE), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Dielectric Barrier Discharge, Energie électrique, Electric Discharge Power Supply, Materials science, Pulsed power, Inductor, Resonance, 7. Clean energy, GaN, High voltage, law.invention, Plasma, Transformerless, High frequency, law, Maximum power transfer theorem, Inverter, Electrical and Electronic Engineering, Transformer, Resonant inverter, business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Wide bandgap, Electrical engineering, Mega-hertz, Optoelectronics, DBD, business, Dielectric barrier discharges (DBD), Voltage
Abstract: International audience; In this paper, the merits of a high-frequency resonant converter for supplying dielectric barrier discharges (DBD) devices are established. It is shown that, thanks to its high-frequency operating condition, such a converter allows to supply DBD devices with short discharge current pulses, a high repetition rate, and to control the injected power. In addition, such a topology eliminates the matter of connecting a high-voltage transformer directly across the DBD device and avoids the issues related to the parasitic capacitances of the latter which disturbs the control the power transfer to the plasma. The design issues of the converter, including the inverter and its switches, the resonant inductor, and the parameter drift compensation are studied. An experimental validation is performed: a mega Hertz resonant converter using GaN FET switches has been manufactured and tested with an excimer lamp.
Published: 2014
Full Text: View/download PDF

36. Screening Methodology for the Efficient Pairing of Ionic Liquids and Carbonaceous Electrodes Applied to Electric Energy Storage

Author: Theodorus de Bruin, Rafael Lugo, Hervé Toulhoat, Julio F. Jover, Patrice Simon, IFP Energies nouvelles (IFPEN), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), IFP Energies Nouvelles - IFPEN (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Réseau de stockage électrochimique de l’énergie - Energie RS2E (FRANCE), Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux - CIRIMAT (Toulouse, France), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: Energie électrique, Matériaux, Analytical chemistry, 02 engineering and technology, Carbon nanotube, 010402 general chemistry, 7. Clean energy, 01 natural sciences, Capacitance, Dissociation (chemistry), [SPI.MAT]Engineering Sciences [physics]/Materials, law.invention, Ion, Condensed Matter::Materials Science, chemistry.chemical_compound, symbols.namesake, Adsorption, law, Physics::Atomic and Molecular Clusters, Physics::Chemical Physics, Physical and Theoretical Chemistry, Supercapacitor, Energy, Chemistry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Condensed Matter::Soft Condensed Matter, Porous carbon, General Energy, Chemical physics, Ionic liquid, symbols, Electric Capacitance, van der Waals force, 0210 nano-technology
Abstract: International audience; A model is presented that correlates the measured electric capacitance with the energy that comprises the desolvation, dissociation and adsorption energy of an ionic liquid into carbonaceous electrode (represented by single-wall carbon nanotubes). An original methodology is presented that allows for the calculation of the adsorption energy of ions in a host system that does not necessarily compensate the total charge of the adsorbed ions, leaving an overall net charge. To obtain overall negative (favorable) energies, adsorption energies need to overcome the energy cost for desolvation of the ion pair and its dissociation into individual ions. Smaller ions, such as BF4 −, generally show larger dissociation energies than anions such as PF6 − or TFSI−. Adsorption energies gradually increase with decreasing pore size of the CNT and show a maximum when the pore size is slightly greater than the dimensions of the adsorbed ion and the attractive van der Waals forces dominate the interaction. At smaller pore diameters, the adsorption energy sharply declines and becomes repulsive as a result of geometry deformations of the ion. Only for those diameters where the adsorption reaches maximum values is the adsorption energy sufficiently negative to balance the positive dissociation and desolvation energies. We present for each ion (and ionic liquid) what the most adequate electrode pore size should be for maximum capacitance.
Published: 2014
Full Text: View/download PDF

37. Electrochemical Kinetics of Nanostructured Nb2O5Electrodes

Author: Jeffrey W. Long, Patrick Rozier, Jeremy Come, Veronica Augustyn, Bruce Dunn, J. W. Kim, Patrice Simon, Pavel Gogotsi, Pierre-Louis Taberna, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), University of California [Los Angeles] (UCLA), University of California (UC), Naval Research Laboratory (NRL), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), United States Navy - USNavy (USA), Réseau de stockage électrochimique de l’énergie - Energie RS2E (FRANCE), University of California-Los Angeles - UCLA (USA), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), University of California, and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Energie électrique, Materials science, Matériaux, Electrochemical kinetics, Nanotechnology, Electrochemistry, 7. Clean energy, Capacitance, Pseudocapacitance, [SPI.MAT]Engineering Sciences [physics]/Materials, Electrochemical cell, Materials Chemistry, Power density, Supercapacitor, Energy, Renewable Energy, Sustainability and the Environment, business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Condensed Matter Physics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Porous carbon, Electrode, Optoelectronics, business
Abstract: International audience; Pseudocapacitive charge storage is based on faradaic charge-transfer reactions occurring at the surface or near-surface of redox-active materials. This property is of great interest for electrochemical capacitors because of the substantially higher capacitance obtainable as compared to traditional double-layer electrode processes. While high levels of pseudocapacitance have been obtained with nanoscale materials, the development of practical electrode structures that exhibit pseudocapacitive properties has been challenging. The present paper shows that electrodes of Nb2O5 successfully retain the pseudocapacitive properties of the corresponding nanoscale materials. For charging times as fast as one minute, there is no indication of semi-infinite diffusion limitations and specific capacitances of 380 F g−1 and 0.46 F cm−2 are obtained in 40-μm thick electrodes at a mean discharge potential of 1.5 V vs Li+/Li. In-situ X-ray diffraction shows that the high specific capacitance and power capabilities of Nb2O5 electrodes can be attributed to fast Li+ intercalation within specific planes in the orthorhombic structure. This intercalation pseudocapacitance charge-storage mechanism is characterized as being an intrinsic property of Nb2O5 that facilitates the design of electrodes for capacitive storage devices. We demonstrate the efficacy of these electrodes in a hybrid electrochemical cell whose energy density and power density surpass that of commercial carbon-based devices.
Published: 2014
Full Text: View/download PDF

38. DCM-Operated Series-Resonant Inverter for the Supply of DBD Excimer Lamps

Author: Hubert Piquet, David Florez, Rafael Diez, Pontificia Universidad Javeriana (PUJ), Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Pontificia Universidad Javeriana (COLOMBIA), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Laboratoire Plasma et Conversion d'Energie - LAPLACE (Toulouse, France), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Dielectric Barrier Discharge, Energie électrique, Electric Discharge Power Supply, Topology (electrical circuits), Plasma sources, 02 engineering and technology, Dielectric barrier discharge, 7. Clean energy, 01 natural sciences, Industrial and Manufacturing Engineering, 010305 fluids & plasmas, law.invention, Resonant inverter, Gas discharge devices, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Commutation, Electrical and Electronic Engineering, Dielectric barrier discharge (DBD), Gas-discharge lamp, Chemistry, Ultraviolet (UV) sources, Zero-current switching (ZCS), [SPI.NRJ]Engineering Sciences [physics]/Electric power, 020208 electrical & electronic engineering, Ultra Violet Generation (UV), Excimer lamp, Power (physics), Control and Systems Engineering, Inverter, DBD
Abstract: International audience; This paper presents the study of a series-resonant inverter for the supply of a dielectric barrier discharge excimer lamp. Causal analysis, based on the fundamental properties of the load, is used to detail the reasoning which has led to this topology. In order to effectively control the lamp power, the operating mode of this converter combines discontinuous current mode and soft commutation (zero-current switching), obtaining low electromagnetic emissions and reduced switching losses as well. The model of the lamp is brieﬂy presented, and it allows a simple state plane analysis to calculate all the electric variables involved in the converter and, consequently, to select the components of the supply. The mathematical relationships obtained from this process, for injected power control by means of the available degrees of freedom, are validated with simulations and experimental results.
Published: 2014
Full Text: View/download PDF

39. Proton conducting gel polymer electrolytes for supercapacitor applications

Author: Pierre-Louis Taberna, Patrice Simon, Anna A. Łatoszyńska, Władysław Wieczorek, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Energie électrique, Materials science, General Chemical Engineering, Inorganic chemistry, 02 engineering and technology, Electrolyte, 010402 general chemistry, Electrochemistry, 01 natural sciences, 7. Clean energy, Capacitance, chemistry.chemical_compound, Génie chimique, Electrochemical capacitor, Supercapacitor, chemistry.chemical_classification, Phosphoric acid ester, Polymer, [CHIM.MATE]Chemical Sciences/Material chemistry, Atmospheric temperature range, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Proton conduction type mechanism, Gel polymer electrolytes, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, Chemical engineering, Wide temperature range, Propylene carbonate, Electrode, 0210 nano-technology
Abstract: International audience; A non-aqueous, mechanically-stable, proton conducting gel polymer electrolyte has been prepared for Electrochemical Capacitor (supercapacitor) applications. It is based on 2-hydroxymethylmethacrylate monomer mixed with two different solvents (propylene carbonate and N,N-dimethylformamide). It was shown that the capacitive performance changes with the gel electrolyte composition. The proton conduction type mechanism affects ions mobility and transport into the porous carbon electrode. Addition of small amounts of DMF solvent leads to a change in the conduction mechanism from a vehicleto a Grotthuss-type, and capacitance of 90 F g-1 at 20 °C was achieved using a 15 wt. % DPhHPO4/P (HEMA)/30 wt. % DMF–70 wt. % PC gel composition. Electrochemical tests were done in a large temperature range (from -40 to 80 °C). The cell delivered a capacitance of 54 F g-1 at -40 °C, that is 60% of the value obtained at room temperature, and 90 F g-1 at 80 °C within voltage window of 1 V.
Published: 2017
Full Text: View/download PDF

40. Implementation of a hybrid electro-active actuated morphing wing in wind tunnel

Author: Jean-François Rouchon, Marianna Braza, Gurvan Jodin, Eric Duhayon, Johannes Scheller, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Massachusetts Institute of Technology - MIT (USA), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Laboratoire Plasma et Conversion d'Energie - LAPLACE (Toulouse, France), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Institut de mécanique des fluides de Toulouse (IMFT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Massachusetts Institute of Technology (MIT), Groupe de Recherches en Electrodynamique (LAPLACE-GREM3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), and Pagès, Nathalie
Subjects: Energie électrique, Shape-memory Alloys, Materials science, Acoustics, Mécanique des fluides, Piezoelectricity, 02 engineering and technology, 7. Clean energy, Aerodynamics, 0203 mechanical engineering, Camber (aerodynamics), Control, Trailing edge, General Materials Science, [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], Wind tunnel, Morphing, Wing, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Shape-memory alloy, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, 020303 mechanical engineering & transports, 0210 nano-technology, Actuator
Abstract: International audience; Amongst current aircraft research topics, morphing wing is of great interest for improving the aerodynamic performance. A morphing wing prototype has been designed for wind tunnel experiments. The rear part of the wing - corresponding to the retracted flap - is actuated via a hybrid actuation system using both low frequency camber control and a high frequency vibrating trailing edge. The camber is modified via surface embedded shape memory alloys. The trailing edge vibrates thanks to piezoelectric macro-fiber composites. The actuated camber, amplitude and frequency ranges are characterized. To accurately control the camber, six independent shape memory alloy wires are controlled through nested closed-loops. A significant reduction in power consumption is possible via this control strategy. The effects on flow via morphing have been measured during wind tunnel experiments. This low scale mock-up aims to demonstrate the hybrid morphing concept, according to actuator capabilities point of view as well as aerodynamic performance.
Published: 2017
Full Text: View/download PDF

41. Fast power flow scheduling and sensitivity analysis for sizing a microgrid with storage

Author: Xavier Roboam, Remy Rigo-Mariani, Bruno Sareni, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), University of Washington (USA), Laboratoire Plasma et Conversion d'Energie - LAPLACE (Toulouse, France), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), and University of Washington [Seattle]
Subjects: Mathematical optimization, Energie électrique, General Computer Science, Linear programming, Microgrid, Computer science, Cost effectiveness, 020209 energy, Optimal power dispatching, Storage, 02 engineering and technology, Smart grid, Optimal scheduling, Dynamic programming, 7. Clean energy, Theoretical Computer Science, Scheduling (computing), Computer Science::Hardware Architecture, Computer Science::Systems and Control, Mixed integer linear programming, 0202 electrical engineering, electronic engineering, information engineering, Integer programming, Numerical Analysis, Applied Mathematics, 020208 electrical & electronic engineering, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Sizing, Modeling and Simulation, Sensitivity analysis
Abstract: International audience; This article proposes a fast strategy for optimal dispatching of power flows in a microgrid with storage. The investigated approach is based on the use of standard mixed integer linear programming (MILP) algorithm in association with a coarse linear model of the microgrid. The resulting computational time is compatible with simulations over long periods of time allowing the integration of seasonal and stochastic features related to renewable energies. By using this fast scheduling strategy over a complete year of simulation, the microgrid cost effectiveness is considered. Finally, a sensitivity analysis is carried out in order to identify the most influent parameters that should be considered in a sizing loop. Different microgrid configurations are also investigated and compared in terms of cost-effectiveness.
Published: 2017
Full Text: View/download PDF

42. Optimal Inductor Design and Material Selection for High Power Density Inverters Used in Aircraft Applications

Author: A. Hilal, Bernardo Cougo, IRT Saint Exupéry - Institut de Recherche Technologique, IRT Saint Exupéry - Institut de Recherche Technologique (FRANCE), and Integration
Subjects: Energie électrique, Materials science, Inductor design, 02 engineering and technology, engineering.material, Inductor, 7. Clean energy, 01 natural sciences, Material selection, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Electronique, Aircraft applications, Power density, 010302 applied physics, 020208 electrical & electronic engineering, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Ferrite core, [SPI.TRON]Engineering Sciences [physics]/Electronics, Magnetic core, engineering, Inverter, Ferrite (magnet), High power density inverters, Magnetic components, Electrical steel
Abstract: International audience; This paper presents the design and optimization of power inductors for three-phase high-power-density inverters to be used in aircraft applications. The inductor's geometric parameters, magnetic properties, core material selection, core and copper losses in addition to temperature calculations are taken into account to meet the low losses and high frequency specifications of the considered high power density inverter. A multi-objective optimization algorithm was developed to calculate weight, volume, and losses of the inductor for different current ripples, different switching frequencies and different inductor core materials. The results of a weight-objective optimization are presented showing the optimal efficiency and power density of the inverter for five chosen core materials, namely the silicon steel, ferrite, iron powder, amorphous and nanocrystalline.
Published: 2016
Full Text: View/download PDF

43. Coupling Supercapacitors and Aeroacoustic Energy Harvesting for Autonomous Wireless Sensing in Aeronautics Applications

Author: Christophe Airiau, Jean-Marie Dilhac, Xavier Dollat, Estelle Piot, Romain Monthéard, Marise Bafleur, Vincent Boitier, Nicolas Nolhier, Équipe Énergie et Systèmes Embarqués (LAAS-ESE), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Service Instrumentation Conception Caractérisation (LAAS-I2C), ONERA - The French Aerospace Lab [Toulouse], ONERA, Institut de mécanique des fluides de Toulouse (IMFT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Investissements d'Avenir, CORALIE, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE), Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE), Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Institut de Mécanique des Fluides de Toulouse - IMFT (Toulouse, France), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), and Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP)
Subjects: energy harvesting, Engineering, Energie électrique, energy management, Embedded systems, Battery-free, Energy Engineering and Power Technology, 02 engineering and technology, Inductor, 7. Clean energy, 0203 mechanical engineering, 0202 electrical engineering, electronic engineering, information engineering, Electrochemistry, Electronic engineering, Aeroacoustics, Supercapacitors, aeroacoustics, Energy transformation, Electronics, Electrical and Electronic Engineering, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, 020301 aerospace & aeronautics, supercapacitors, Renewable Energy, Sustainability and the Environment, business.industry, Energy harvesting, wireless sensor, Dynamique des Fluides, 020208 electrical & electronic engineering, Electrical engineering, Energy management, Micropower, AC power, Electricity generation, Transducer, Micro et nanotechnologies/Microélectronique, battery-free, embedded systems, Wireless sensor, business
Abstract: This paper reports for the first time the experimental demonstration of a wireless sensor node only powered by an aeroacoustic energy-harvesting device, meant to be installed on an aircraft outside skin. Aeroacoustic noise is generated on purpose to serve as a means of converting mechanical energy from high velocity airflow into electrical energy. Results related to the physical characterization of the energy conversion process are presented. The proposed aeroacoustic transducer prototype, consisting in a rectangular cavity fitted with a piezoelectric membrane, is shown to deliver up to 2 mW AC power under Mach 0.5 airflow. Optimized power management electronics has been designed to interface with the transducer, including a self-powered Synchronized Switch Harvesting on Inductor (SSHI) interface circuit and an efficient buck-boost DC/DC converter. The design of micropower auxiliary circuits adds functionality while preserving high efficiency. This circuit stores energy in supercapacitors and is able to deliver a net output DC power close to 1 mW. A fully autonomous system has been implemented and tested, successfully demonstrating aeroacoustic power generation by supplying a battery-free wireless datalogger in conditions representative of an actual flight.
Published: 2016
Full Text: View/download PDF

44. Optimizing the Operation of DBD Excilamps

Author: David Florez, Rafael Diez, Hubert Piquet, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Pontificia Universidad Javeriana (COLOMBIA), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Universidad Sergio Arboledad (COLOMBIA), Laboratoire Plasma et Conversion d'Energie - LAPLACE (Toulouse, France), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, and Pontificia Universidad Javeriana (PUJ)
Subjects: Optimization, Dielectric Barrier Discharge, Nuclear and High Energy Physics, Energie électrique, Materials science, Nuclear engineering, Excimer Lamp, Electric generator, 02 engineering and technology, Dielectric barrier discharge, Inductor, medicine.disease_cause, 01 natural sciences, 7. Clean energy, 010305 fluids & plasmas, law.invention, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, medicine, Operating point, Dielectric barrier discharge (DBD), business.industry, 020208 electrical & electronic engineering, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Ultra Violet Generation (UV), Condensed Matter Physics, Excimer lamp, Ultraviolet (UV), Power (physics), Duty cycle, Optoelectronics, DBD, Current control, business, Ultraviolet
Abstract: International audience; Dielectric barrier discharge (DBD) excimer lamps are efﬁcient and environmentally friendly sources of ultraviolet (UV). One of the challenges for this technology to be massively adopted is the optimization and effective management of the overall lamp-supply system. Accordingly, a methodology to study the impact of the operating point over the performance and operation of a DBD UV excilamp is developed and experimentally validated. The DBD operating point is parametrically adjusted by means of the power supply current with three independent variables: intensity, frequency,and duty cycle. This methodology allows the determination of the optimal operating point for the particular excilamp under study. These supplying conditions will be later achieved by means of a dedicated electrical generator, which has to be especially designed according to these speciﬁcations. It is found that an increment in the current intensity has a positive impact on the lamp efﬁciency and also leads to the existence of more ﬁlamentary discharges. Also, a relation between the energy of the pulse supplied to the DBD and the reactor efﬁciency can be established. For certain levels of UV power, energy savings on the reactor higher than 50% are attained by proper selection of the operating point.
Published: 2016
Full Text: View/download PDF

45. Design methodologies for sizing a battery bank devoted to a stand-alone and electronically passive wind turbine system

Author: Jamel Belhadj, Xavier Roboam, Bruno Sareni, Amine Jaafar, Malek Belouda, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Tunis - El Manar (TUNISIA), Laboratoire des Systèmes Electriques - LSE (Tunis, Tunisie), Ecole Nationale d'Ingénieurs de Tunis (ENIT), Université de Tunis El Manar (UTM)-Université de Tunis El Manar (UTM), Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Optimal design, Engineering, Energie électrique, 020209 energy, Evolutionary algorithm, Storage, Context (language use), 02 engineering and technology, Evolutionary algorithms, 7. Clean energy, Turbine, Automotive engineering, Wind speed, Batteries, Passive wind turbine, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Global optimization, Renewable Energy, Sustainability and the Environment, business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Sizing, Hybrid system, Inverse problem, business
Abstract: International audience; In this paper, the authors investigate four original methodologies for sizing a battery bank inside a passive wind turbine system. This device interacts with wind and load cycles, especially for a stand-alone application. Generally, actual wind speed measurements are of long duration which leads to extensive processing time in a global optimization context requiring a wide number of system simulations. The ﬁrst part of this article outlines two sizing methodologies based on a statistical approach for the sizing of the electrochemical storage device of a stand-alone passive wind turbine system. Two other efﬁcient methodologies based on the synthesis of compact wind speed proﬁles by means of evolutionary algorithms are described in the second part of this paper. The results are ﬁnally discussed with regard to the relevance of the battery bank sizing and in terms of computation cost, this later issue being crucial to an Integrated Optimal Design (IOD) process.
Published: 2016
Full Text: View/download PDF

46. Renewable electricity production with some wasted second-life components

Author: P. Maussion, P. Chrin, Maria Pietrzak-David, LAboratoire PLasma et Conversion d'Energie (LAPLACE), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, COmmande et DIAgnostic des Systèmes Electriques (LAPLACE-CODIASE), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: Engineering, Energie électrique, Renewable energy, Second-life, Waste components, Re- used components, 02 engineering and technology, 7. Clean energy, 0202 electrical engineering, electronic engineering, information engineering, Production (economics), 0505 law, Re-used components, business.industry, Electric potential energy, 020208 electrical & electronic engineering, 05 social sciences, Induction generator, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Electrical engineering, Environmental economics, Electricity generation, 050501 criminology, Automotive battery, Electricity, Pico-hydro generation, business, Induction motor
Abstract: Renewable energy systems are playing an important role to reduce CO2 emission and provide electricity for daily use in rural areas. But brand new components with up-to-date technology could be far too expensive for many potential users (rural communities in many developing countries. As a consequence, turning waste components into energy production systems could be a good opportunity to reach these two goals simultaneously. In this paper, a disposal induction motor, a car battery and an Uninterrupted Power Supply (UPS) are combined together in order to generate electrical energy from pico-hydro power. The control of the RMS output voltage and frequency is presented with a comprehensive state-space model, simulation and experimental validation results are provided.
Published: 2016
Full Text: View/download PDF

47. Off-line and On-line Power Dispatching Strategies for a Grid Connected Commercial Building with Storage Unit

Author: Bruno Sareni, Xavier Roboam, Jean-Gabriel Steinmetz, Stéphan Astier, Eric Cahuet, Remy Rigo-Mariani, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), SCLE sfe (FRANCE), Pagès, Nathalie, Institut National Polytechnique de Toulouse - INPT (FRANCE), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), and SCLE-SFE
Subjects: Energie électrique, Engineering, Energy storage, Forecasts, 020209 energy, Smart grid, 02 engineering and technology, 7. Clean energy, Automotive engineering, Grid parity, Intermittent energy source, 0202 electrical engineering, electronic engineering, information engineering, Grid-connected photovoltaic power system, Power dispatching, Computer Science::Distributed, Parallel, and Cluster Computing, Pumped-storage hydroelectricity, business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, 021001 nanoscience & nanotechnology, Base load power plant, Embedded system, Distributed generation, Microgrid, 0210 nano-technology, business, [SPI.NRJ] Engineering Sciences [physics]/Electric power
Abstract: International audience; With the development of decentralized power sources based on renewable energy, power grids need smarter operations to be run properly. This paper refers to a microgrid with solar panels associated with an energy storage unit connected to the main grid. An off-line optimal dispatching of the storage power flows is proposed in order to minimize energy costs with regards to the daily energy rates. An on-line management strategy is also introduced so as to control in real-time the grid power predicted over the day by the off-line dispatching.
Published: 2012
Full Text: View/download PDF

48. Optimal System Management of a Water Pumping and Desalination Process Supplied with Intermittent Renewable Sources

Author: Bruno Sareni, Xavier Roboam, Jamel Belhadj, Duc Trung Nguyen, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Tunis - El Manar (TUNISIA), Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Laboratoire des Systèmes Electriques - LSE (Tunis, Tunisie), Ecole Nationale d'Ingénieurs de Tunis (ENIT), Université de Tunis El Manar (UTM)-Université de Tunis El Manar (UTM), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: Optimization, Water pumping, Energie électrique, Renewable energy, Engineering, Energy management, 020209 energy, ComputerApplications_COMPUTERSINOTHERSYSTEMS, 02 engineering and technology, computer.software_genre, 7. Clean energy, Desalination, 020401 chemical engineering, Systems management, 0202 electrical engineering, electronic engineering, information engineering, Intermittent power, 0204 chemical engineering, Process engineering, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, Ecologie, Environnement, business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Water storage, Photovoltaic system, Environmental engineering, 6. Clean water, Power (physics), Autonomous system, Bond Graph, business, computer
Abstract: International audience; This paper aims at defining energy management strategy for a water pumping and desalination process which would be powered by a hybrid (solar PV & wind) renewable generation system. Several pumping subsystems for well pumping, water storage and desalination are coupled. The particularity of the proposed architecture with its management deals with the absence of electrochemical storage, only taking benefit of hydraulic storage in water tanks: in such an autonomous device, given a certain level of intermittent power following wind and sun irradiation conditions, and given hydraulic characteristics of water pumping subsystems, this study puts forward the prime importance of a water and power flow management optimization. For this purpose, both dynamic and quasi static models are proposed before stetting the management strategy based on optimal power dispatching. Subsequent results are analyzed in terms of robustness and performance.
Published: 2012
Full Text: View/download PDF

49. Hybrid power generation system for aircraft electrical emergency network

Author: Hubert Piquet, Christophe Turpin, Olivier Langlois, Xavier Roboam, B. Morin, Airbus (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Groupe ENergie Electrique et SYStémique (LAPLACE-GENESYS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Airbus Operation S.A.S., Airbus [France], and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: DC/DC bidirectional static converter, Energie électrique, Engineering, 02 engineering and technology, 7. Clean energy, Maximum power point tracking, Energy storage, More Electric Aircraft, 0202 electrical engineering, electronic engineering, information engineering, Ram Air Turbine (RAT), Electrical and Electronic Engineering, Hybridization, Ram air turbine, Supercapacitor, Wind power, business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, 020208 electrical & electronic engineering, Electrical engineering, 020206 networking & telecommunications, DC-BUS, Electricity generation, Harmonics, Electric power, business, Power generation
Abstract: International audience; A whole structure and two management strategies are proposed here for hybridisation of a Ram air turbine (RAT) by means of supercapacitors. Such hybrid structure is dedicated to an aircraft emergency network. The structure consists in coupling, through a 270 V DC bus, a controlled source (RAT) with a storage device interfaced through a bidirectional DC–DC converter. Both the energy-management strategies are described and analysed: the ﬁrst one is to assign the ‘high-frequency harmonics’ of the load power to the storage which is current controlled, whereas the RAT controls the bus voltage and then only feeds the average power, losses and low-frequency harmonics of the load. The second one proposes an energy optimised operation of the system: the RAT, being current controlled, is able to maximise the supplied power (maximum power point tracking), as for classical windturbines. For such a strategy, the bus voltage is regulated from the storage device. The RAT sizing and its mass can then be strongly reduced by means of this hybrid structure controlled with optimised management strategies. Experiments on a lab test-bench conﬁrm analyses presented.
Published: 2011
Full Text: View/download PDF

50. MnO2-coated Ni nanorods: Enhanced high rate behavior in pseudo-capacitive supercapacitor

Author: Frédéric Favier, Yannick Lei, Barbara Daffos, Patrice Simon, Pierre-Louis Taberna, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Centre National de la Recherche Scientifique - CNRS (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Montpellier 1 (FRANCE), Université de Montpellier 2 (FRANCE), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Energie électrique, Materials science, Matériaux, General Chemical Engineering, High rate capacitance, Manganese dioxide, Mineralogy, 02 engineering and technology, Substrate (electronics), 010402 general chemistry, Electrochemistry, 01 natural sciences, 7. Clean energy, Coating, chemistry.chemical_compound, Supercapacitor, Anodizing, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Dielectric spectroscopy, chemistry, Chemical engineering, Electrode, Aluminium oxide, Nanorods, Nanorod, 0210 nano-technology
Abstract: International audience; Ni nanorods prepared by electrochemical growth through an anodized aluminium oxide membrane were used as substrate for the electrodeposition of MnO2 either in potentiostatic mode or by a pulsed method. Electrochemical deposition parameters were chosen for an homogeneous deposit onto Ni nanorods. Resulting Ni supportedMnO2 electrodes were tested for electrochemical performances as nanostructured negative electrodes for supercapacitors. They exhibited initial capacitances up to 190 F/g and remarkable performances at high charge/discharge rates.
Published: 2010
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Journal

Database

Publisher

92 results on '"Énergie électrique"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources