Korean Chemical Engineering Research, Vol.48, No.4, 440-443, August, 2010
코발트망간 산화물 양전극과 활성탄 음전극으로 구성된 초고용량 커패시터 특성
Supercapacitive Properties of a Hybrid Capacitor Consisting of Co-Mn Oxide Cathode and Activated Carbon Anode
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초록
양극인 Co-Mn oxide과 음극인 활성탄, 전해질인 6M KOH 수용액으로 구성된 혼성 커패시터를 제조하여 cyclic voltammetry를 이용하여 전기화학적 특성을 조사하였다. 제조한 초고용량 커패시터는 0~1.4 V 전위영역에서 안정한 전위창을 나타내며, 주사속도 5 mV/s일 때 비용량 67.3 F/g, 에너지 밀도 18.3 Wh/kg, 출력 밀도는 237.7 kW/kg을 나타내었다.
A hybrid supercapacitor consisting of Co-Mn oxide as a cathode, activated carbon as an anode, and 6 M KOH as a electrolyte was fabricated and its supercapacitor performance was investigated by means of cyclic voltammetry. The prepared supercapacitor showed the specific capacitance of 67.3 F/g, energy density of 18.3 Wh/kg, and power density of 237.7 kW/kg, respectively. It means that the supercapacitor can be used for the practical applications.
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