Karamanova, B.; Mladenova, E.; Thomas, M.; Rey-Raap, N.; Arenillas, A.; Lufrano, F.; Stoyanova, A. Electrochemical Performance of Symmetric Solid-State Supercapacitors Based on Carbon Xerogel Electrodes and Solid Polymer Electrolytes. Gels2023, 9, 983.
Karamanova, B.; Mladenova, E.; Thomas, M.; Rey-Raap, N.; Arenillas, A.; Lufrano, F.; Stoyanova, A. Electrochemical Performance of Symmetric Solid-State Supercapacitors Based on Carbon Xerogel Electrodes and Solid Polymer Electrolytes. Gels 2023, 9, 983.
Karamanova, B.; Mladenova, E.; Thomas, M.; Rey-Raap, N.; Arenillas, A.; Lufrano, F.; Stoyanova, A. Electrochemical Performance of Symmetric Solid-State Supercapacitors Based on Carbon Xerogel Electrodes and Solid Polymer Electrolytes. Gels2023, 9, 983.
Karamanova, B.; Mladenova, E.; Thomas, M.; Rey-Raap, N.; Arenillas, A.; Lufrano, F.; Stoyanova, A. Electrochemical Performance of Symmetric Solid-State Supercapacitors Based on Carbon Xerogel Electrodes and Solid Polymer Electrolytes. Gels 2023, 9, 983.
Abstract
Flexible energy storage devices, such as solid-state supercapacitors, are becoming increasingly attractive due to their characteristics of high electrochemical performance, reliability, light weight, flexibility, absence of electrolyte leakage, high power density, and long lifetime. For the optimization of the solid-state symmetrical supercapacitor proposed in this work, it was employed in sodium and lithium form Aquivion electrolyte membrane, which serves as the separator and electrolyte. As electrode materials, carbon xerogels, synthesized by microwave-assisted sol-gel methodology, with designed and controlled properties were obtained. Commercial activated carbon (YP-50F, 'Kuraray Europe' GmbH) was used for comparison. Specifically, the developed solid-state symmetrical supercapacitors deliver sufficient high specific capacitances of 105−110 F g−1 at 0.2 A g−1, along with an energy density of 4.5 Wh kg−1 at 300 W kg−1, and in a voltage window of 0-1.2 V in an aqueous environments, also demonstrating excellent cycling stability up to 10,000 charge/discharge cycles. These results can demonstrate the potential applications of carbon xerogel as an active electrode material and cation exchange membrane as the electrolyte in the development of solid-state supercapacitor devices
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