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

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Electrochemical Performance of Carbon-PTFE Electrode with High Capacitance and Density for EDLC

EDLC용 고용량, 고밀도 Carbon-PTFE 전극의 전기화학적 특성

  • Kim, Ick-Jun (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Jeon, Min-Je (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Yang, Sun-Hye (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Moon, Seong-In (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Kim, Hyun-Soo (Battery Research Group, Korea Electrotechnology Research Institute)
  • 김익준 (한국전기연구원, 전지연구그룹) ;
  • 전민제 (한국전기연구원, 전지연구그룹) ;
  • 양선혜 (한국전기연구원, 전지연구그룹) ;
  • 문성인 (한국전기연구원, 전지연구그룹) ;
  • 김현수 (한국전기연구원, 전지연구그룹)
  • Published : 2006.06.22
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Abstract

This work describes the effect of the number of roll pressing and the composition of carbon black on the electric and mechanical properties of carbon-PTFE electrode, in which composition is MSP 20 : carbon black : PTFE = 95-X : X : 5 wt.%. It was found that the best electric and mechanical properties were obtained for sheet electrode roll pressed about 15 times and for sheet electrode, in which composition is MSP 20 : carbon black : PTFE = 80 : 15 : 5 wt.%. These behaviors could be explained by the network structure of PTFE fibrils and conducting paths linked with carbon blacks, respectively. On the other hand, cell capacitor using the sheet electrode with 15 wt.% of carbon black attached on aluminum current collector with the electric conductive adhesive, in composition is carbon black : CMC = 70 : 30 wt.%, has exhibited the best rate capability between $0.5mA/cm^2{\sim}100mA/cm^2$ current density and the lowest ESR.

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