Abstract
A hybrid supercapacitor based on poly3-methyl thiophene, activated carbon, and a gel polymer electrolyte GPE was fabricated and characterized. GPE was synthesized from polyethylene oxide-tetra ethyl ammonium tetra fluoro borate Et4NBF4-propylene carbonate-ethylene carbonate-nanoclay. The supercapacitor was characterized by cyclic voltammetry, charging/discharging cycle, and electrochemical impedance spectroscopy. Capacitance of 18.54 F/g was obtained from discharging curve of supercapacitor. The energy density and the power density of the supercapacitor were 10.2 Wh/kg and 96.2 W/kg, respectively, at a discharge current density of 16 A/m2. The cycling studies showed a considerable decrease in capacitance during initial cycles followed by a slower decrease during later cycles.
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