한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)

한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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수퍼커패시터용 산화망간전극의 산화처리에 의한 용량 변화

Change of Capacitance on Maganese Dioxide Electrode for Supercapacitor by Oxidation Treatment

  • 발행 : 2000.07.01
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초록

Amorphous MnO$_2$$.$ nH$_2$O in 1M KOH aqueous electrolyte proves to be an excellent electrode for a faradic electrochemical capacitor cycled between -0.5 and +1.0 versus Ag/AgCl. In order to observe morphology and crystalline structure of MnO$_2$powder, we analyzed it by XRD and SEM. The effect of oxidation treatment on MnO$_2$electrode was observed by different oxidation voltages. A maximum capacitance of 364F/g was obtained by 1.1V oxidation treatment. This capacitance was attributed solely to a surface redox mechanism

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