Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of Nickel Foam Current Collector on the Supercapacitive Properties of Cobalt Oxide Electrode

코발트 산화물 전극의 수퍼커페시터 성질에 미치는 니켈 폼 집전체 효과

  • Yoon, Yu-Il (Department of Applied Chemistry and Biotechnology, Hanbat National University) ;
  • Kim, Kwang-Man (Energy Conversion Devices Team, Electronics and Telecommunications Research Institute (ETRI)) ;
  • Ko, Jang-Myoun (Department of Applied Chemistry and Biotechnology, Hanbat National University)
  • 윤여일 (한밭대학교 응용화학생명공학부) ;
  • 김광만 (한국전자통신연구원 융합부품소재연구부문 에너지전환소자팀) ;
  • 고장면 (한밭대학교 응용화학생명공학부)
  • Published : 2008.06.30
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Abstract

An electrode for supercapacitor using 3-dimensional porous nickel foam as a current collector and cobalt oxide as an active material was prepared and characterized in terms of morphology observation, crystalline property analysis, and the investigation of electrochemical property. The electrode surface showed that the cobalt oxide was homogeneously coated as the crystalline phase of $Co_3O_4$. Cyclic voltammetry for the $Co_3O_4$/nickel foam electrode exhibited higher specific capacitance values (445 F/g at 10 mV/s and 350 F/g at 200 mV/s) and excellent capacitance retention ratio (99% after $10^4$ cycles). It was proved that the nickel foam substrate played the roles in reducing the interfacial resistance with cobalt oxide and in improving the electrode density by embedding greater amount of cobalt oxide within it.

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References

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