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Green energy production for environmental protection and its sustainability has been a hot topic for the last decade. The solar source is one of the candidates for green energy to be developed in Indonesia. It is because of the tropical climate that makes Indonesia receives a lot of sun exposure. Besides, the development of green energy needs to be balanced with the development of better energy storage. The high-power density, long lifetime, and environmentally friendly are exciting and unique points of a supercapacitor. Research of photo-supercapacitor, which integrating solar cells with a supercapacitor, has been developed widely. This Integrated structure will capture and convert light energy into electrical energy then store it. Investigation on improving DSSC performance was carried out in many ways, such as a variation on dye materials, variation on the photoanode material, and other component variation, observations on the effects of temperature variations in the growth of photoanode materials, and investigation on the role of blocking layers and any others. To obtain a good start for the next investigation, we need a complete map of the recent progress on the integrated photo-supercapacitors, mainly the device constructed from EDLC and DSSC. This review article is focused on summarizes current trends in the structure and performance of integrated EDLC Supercapacitor with DSSC. The optimized additional blocking layer in the DSSC section for integrated photo-supercapacitors devices is also proposed. [ABSTRACT FROM AUTHOR]

Supercapacitor has received considerable attention as a promising energy storage device due to its fast charging, excellent cyclic stability, and high-power density. Activated carbon is the main material used to make supercapacitor electrodes because it has a high theory-specific surface area reach of 2,685 m2g−1 and low cost. However, structure micropore activated carbon had poor ionic diffusion and transportability that make inefficient surface area utilization, long charge-discharge performance, and low cycle life. Therefore, continuous research is needed to improve supercapacitor performance by adding and modifying structure micropores to increase the performance of electrochemically active sites so that ionic diffusion is better. This research is focused on the influence of concentration PVP immersion 0 M and 0.06 M with the dehydrogenation method. The higher concentration PVP strongly influenced the microstructure, morphology, and electrochemical process. The activated carbon mesoporous was characterized by XRD, SEM – EDX, FTIR, BET, and Charge Discharge. Further, the supercapacitor with the best performance is shown by the highest concentration of PVP 0.06 M exhibited the highest specific capacitance, energy density, and power density of 83.83 F.g−1, 60.06 Wh kg−1, 454.24 Wkg−1. ACM-0.06 had highest cycle stability in the cell voltage of 0-2.4 V at a current density of 0.1 Ag−1, and maximum energy density is 58.96 Wh kg−1 with 95.82 % capacity retention after 25 cycles. [ABSTRACT FROM AUTHOR]

Energy storage continues to be a growing research topic. Supercapacitors are a good new choice of energy storage devices because they have good performance with high-density values, relatively fast charging, long-lasting lifetime, and are included in environmentally friendly technologies. The development of materials and structures in an extensive manner continues to be studied. Materials that can support energy storage devices have high capacitance, such as Activated Carbon (AC) and Bismuth Phosphate (BiPO4) as electrode materials. However, the energy density of carbon-based supercapacitors is still low. On the other hand, BiPO4 has good crystallinity and stability, high thermal and chemical properties, and has an ideal redox-active specificity as a supercapacitor electrode material. There is a lot of research on supercapacitor materials that have been released. The article summarizes current trends in the development of supercapacitor material synthesis and supercapacitor performance, particularly AC-BiPO4−based electrodes. The use of BiPO4 phosphate metal materials optimized to improve the performance of the supercapacitor electrode material is also proposed. Several supercapacitor material applications and new developments of supercapacitors and prospect analysis are also presented in this report. [ABSTRACT FROM AUTHOR]

The development of thermoelectric device engineering has begun with the exploration and innovation of the use of new materials, defect engineering, doping engineering, and material mixing experiments. In previous studies, modifications have been made to the GO/rGO thermoelectric by doping with atom S but in previous studies have not conducted research on other atomic doping and the influence of doping concentrations. In this study, graphene oxide-based thermoelectric devices were doped by phosphorus and nitrogen atoms and modifications to the width of rxGO in the xGO /rxGO pair to get different areas. xGO materials were synthesized with added ultrasonic wave technique from graphene oxide material, then deposition to polyimide substrates. The fabrication process was done to form PGO/rPGO line modification of 0.5/0.25, 0.5/0.5, 0.5/0.75 mm and NGO/rNGO line modification of 0.75/0.75, 0.75/1.00 mm for using irradiation laser technique with length wave 405 nm and power 1.5 W. The characterizations used are X-Ray Diffraction, SEM, Temperature sensor and I-V. The voltage comparisons result of modification rPGO width line dT=10K were rPGO line width 0.25 mm>0.5 mm>0.75 mm (0.201, 0.165, and 0.126 Volts) Volt, as well as the seebeck coefficients comparison result were rPGO line width 0.25 mm>0.5 mm >0.75 mm (3.33, 2.95, 2.18) x 10−4 V/K. The voltage comparisons result of modification rPGO width line dT=10K were rNGO line width 0.75 mm>1.0 mm (0.47 and 0.4) Volt, as well as the seebeck coefficients comparison result were rNGO line width 0.75 mm>1.0 mm (2.52, 2.47)×10−2 V/K. [ABSTRACT FROM AUTHOR]

Energy is a major requirement in everyday life. The harvesting energy, as well as the storing energy, are crucial to being developed. Many individual types of research of DSSC or other solar cells systems, as well as the energy storage systems, have greatly improved. Many disadvantages are arising for a separated device e.g. loss of converted energy from solar cell, or need other expensive devices for unused converted energy. To overcome the problem, It is necessary to combine the solar cells and their storage in one integrated system. In this report, we show the charging performance of electrical energy from DSSC into a supercapacitor section. In this study, we simply describe the synthesis of various photoanodes of SnO2:TiO2 composite nanoparticles for a various fraction of wt% TiO2 i.e. 0, 9, 18, 27, 36, and 100%. The films have been prepared using the screen-printing method followed by blending with dye β-carotene and combined an additional layer of ZnO symmetric supercapacitor to build a solar-supercapacitor. It is found that TiO2 and SnO2 particles were successfully synthesized with the grain size ranged from 8.9 nm to 26 nm. The gap energy produced by SnO2/TiO2 composite nanoparticles is 3.07 to 3.15 eV. The addition of TiO2 nanoparticles increases the efficiency of solar cells. The performance of optimum solar cell SnO2:TiO2 composite nanoparticle showed by 36 wt% TiO2 device with Jsc, Voc, Fill Factor, and the efficiency of 0.388 mA, 0.806 V, 0.452, and 0.819% respectively. The charging from DSSC into supercapacitor was measured to btain their capacitance. It is shown that the supercapacitor section can store the energy produced by the conversion of light into electricity in the solar cell section. [ABSTRACT FROM AUTHOR]