| 코발트망간 산화물/탄소나노섬유 복합전극의 수퍼케폐시터 특성 |
| 김용일, 윤여일, 고장면 |
| 한밭대학교 응용화학생명공학부 |
| CoMn Oxide/Carbon-nanofiber Composite Electrodes for Supercapacitors |
| Yong-Il Kim, Yu-Il Yoon, Jang-Myoun Ko |
| Department of Applied Chemistry and Biotechnology, Hanbat National University |
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| ABSTRACT |
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Composite electrodes consisting of $CoMnO_2$ and carbon nanofibers(vapor grown carbon nanofiber, VGCF) with high electrical conducivity($CoMnO_2$/VGCF) were prepared on a porous nickel foam substrate as a current collector and their supercapacitive properties were investigated using cyclic voltammetry in 1 M KOH aqueous solution. The $CoMnO_2$/VGCF electrode exhibited high specific capacitance value of 630 F/g at 5 mV/s and excellent capacitance retention of 95% after $10^4$ cycles, indicating that the used VGCF played the important roles in reducing the interfacial resistance in the composite electrode to improve supercapacitive performance. |
| Key words:
Supercapacitor, $CoMnO_2$, Nickel foam, Capacitance |
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