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The present work investigated mapping and scientometric techniques adopt on the publications towards analysis the research trend in energy storage and conversion. The research was conducted based on Web of Science data for the 1993-2021 periods. The study found out that India's research effort in the energy storage and conversion field was significantly less than world production for all years in the study period from 1993 to 2021. Although the research performance of the contribution of scientists rose to peak levels with over a thousand publications between 2014 and 2021, were the highest-rated collaborative authors with 10 (45.45%) of the publications of the Alagappa University. The main types of sources were published as articles with 23,394 (88.7%) publications. Research articles engaged the first position, Wang Y tops the list with 322 (1.22%) publications, followed by Zhang Y, Wang J, Li Y, Liu J, Zhang L, Liu Y, and Wang L had the 2nd to 8th position for them, of which more than 200 publications testify. It was found that the largest number of published papers in chemistry was 4,444 with 12,103 (45.89%) of the publications, Chinese Peoples were with 12,145 (46.05%) devoted about half of the research publications shared in energy storage and conversion applications.

Electropolymerization has become a convenient method for synthesizing and characterizing complex organic copolymers having intrinsic electronic conductivity, including the donor (D)–acceptor (A) class of electronically conducting polymers (ECPs). This review begins with an introduction to the electrosynthesis of common second-generation ECPs. The information obtainable from electroanalytical studies, charge carriers such as polarons (positive and negative) and bipolarons (positive and negative) and doping will be discussed. The evolutionary chain of ECPs is then presented. ECPs comprising electron-rich D and electron-deficient A moieties have been shown to possess intrinsic electronic conductivity and unique optical and electronic properties. They are third generation ECPs and electropolymerization of mixtures of D and A leads to stoichiometrically controlled block copolymers. These D–A type ECPs are discussed on the basis of selected representative materials. Since the discovery of electropolymerization as a powerful tool to synthesize copolymers of conjugated monomers with a pre-determined ratio of D and A repeat units present in the polymer, the field of D–A type ECPs has grown considerably and the literature available since 2004 to 2021 is summarized and tabulated. Electronic and optical properties of the materials determined by computational chemistry are presented. The data obtained from electrochemical and optical methods are compared with those obtained from computational methods and reasons for discrepancies are given. The literature on the concept of electropolymerization extended to synthesizing triblock and many-block copolymers is reviewed. Finally, applications of D–A polymers in optoelectronic devices (organic solar cells and field-effect transistors) and in bio-imaging are explained quoting appropriate examples.

In the present work, samarium-doped nickel manganese oxide was produced by employing a straightforward co-precipitation method. A peak with a 2θ of 36° corresponded to the (110) plane confirming the formation of the rhombohedral crystal structure of NiMnO3. The existence of Mn–O and Ni–O stretching vibration modes was confirmed by Raman spectroscopy. FTIR spectra confirmed the existence of the metal–oxygen bond of NiMnO3. The synthesized ternary Ni-based material was found to be spherical nanoparticles with an average diameter of 0.81 μm. The electrochemical oxygen evolution reaction (OER) performance was explored on 0.02 M samarium (Sm)-doped NiMnO3 demonstrating outstanding OER action with low 321 mV, a low Tafel slope value (109 mV dec−1), and low charge-transfer resistance (0.19 Ω). Moreover, the BET results suggest that the 0.02 M Sm-doped NiMnO3 exhibited elevated surface area (78.78 m2 g−1) with a mesoporous character. Therefore, NiMnO3 doped with high concentrations of a rare earth metal, Sm, is proposed as a suitable material for next-generation water splitting applications.

The present study aims to evaluate the aptness of two commercial simulators, HOMER Pro and RETScreen Expert, as predictors of the performance of a large-scale photovoltaic power plant designed to deliver up to 20 MW in a hot climate, for which 26 months of real operational data are available. The power plant is located in the province of Adrar in the south of Algeria and classified as one of the hot regions worldwide. Performance parameters were reference yield, performance ratio, capacity factor, temperature loss and statistical indicators. The results showed that photovoltaic power plant performance depends on cell technology, insolation, and environmental conditions, especially temperature. The deviations between the simulation results and real monitoring data were found to be smaller in the case of HOMER Pro simulation tool. The total annual energy supplied in 2018 by the power plant was 36364MWh, whereas RETScreen Expert predicted 42339 MWh, or about 14% more and HOMER Pro predicted 34508 MWh or about 5.1% less. The influence of temperature on the power plant output was strong, causing a 40% drop during the summer, due to the limitations of the polycrystalline cell technology. This needs to be considered in the design of future photovoltaic power plants to be operated in hot climates. HOMER Pro and RETScreen Expert predicted an average annual final yield of 5.128 h/day, a module efficiency of 15% and an inverter efficiency of 98%. The t statistics were 3.75 for HOMER Pro and 6.12 for RETScreen Expert. The analysis shows that the 20 MW photovoltaic plant in hot climate experiences high losses compared to an equivalent plant based on thin-film photovoltaic cells.

This study focuses on synthesizing the heavy metal-free ancient Egyptian blue (EB; CaCuSi4O10) dye using a facile ceramic method for luminescent solar concentrator (LSC) application. XRD, SEM and EDX results confirmed that this well-crystallized material is successfully synthesized. Optical studies revealed that EB has a high Stokes shift and possesses an average lifetime of 110.50 μs with a quantum yield of 12.93%. Finally, an EB-integrated LSC was fabricated that exhibits a power conversion efficiency (η) of 0.15% and an optical conversion efficiency (ηopt) of 1.21%, which are the highest values reported so far using EB. publishedVersion

This study reports a facile impregnation method for synthesizing Ni-doped TiO2 nanomaterials using P25-TiO2 as a starting material. The as prepared nanomaterials were subjected to structural and optical characterizations and subsequently employed in photovoltaic studies. X-ray diffraction (XRD) and Raman studies confirmed that Ni doping did not alter the anatase and rutile contents of P25-TiO2. Also, the presence of the constituent dopants and their ionic states were confirmed by Energy-Dispersive X-ray (EDX) and X-ray photoelectron (XPS) spectroscopies. Topographic Atomic Force Microscopic (AFM) images illustrated that Ni doping had increased the surface roughness of the TiO2. Optical characterization by UV-Visible spectroscopy revealed that the Ni doping had caused red shift in light absorption due to reduced TiO2 bandgap and improved the dye adsorption on TiO2 films. Then, the photocurrent–photovoltage property of the fabricated devices was investigated and the optimized 0.10 wt% Ni-doped TiO2 photoanode based device exhibited pronounced power conversion efficiency (PCE) of 6.29% under air mass (AM) 1.5 conditions (100 mWcm−2, 1 sun). Improved charge transport properties were also observed by the electrochemical impedance spectroscopic (EIS) study for the device with optimized Ni-doped TiO2 compared to the control device.