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Electrochemical characteristics of electric double layer capacitor using sulfonated polypropylene separator impregnated with polymer hydrogel electrolyte |
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| Authors: | Hajime Wada Naoji Furukawa Nozomu Sugoh Masayuki Morita Chiaki Iwakura |
| Affiliation: | a Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan b Kurashiki Research Laboratory, Kuraray Co. Ltd., 2045-1 Sakazu, Kurashiki, Okayama 710-8691, Japan c Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan |
| Abstract: | Sulfonated polypropylene separators impregnated with the polymer hydrogel electrolyte were used in electric double layer capacitors (EDLCs). The electrochemical properties of the EDLC with the polymer hydrogel electrolyte were investigated by cyclic voltammetry and charge-discharge cycle tests and compared with a KOH aqueous electrolyte. Furthermore, effects of KOH concentration and temperature on capacitance of the EDLC were studied. As a result, it was found that the capacitance of the EDLC with the polymer hydrogel electrolyte was higher than that with a KOH aqueous solution in the wide range of KOH concentration and temperature. |
| Keywords: | Electric double layer capacitor Sulfonated polypropylene separator Polymer hydrogel electrolyte Activated carbon Ionic conductivity |
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