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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Comparison of Electrochemical Properties of EDLCs using Activated Carbon Electrodes Fabricated with Various Binders

활성탄소 전극의 제조방식에 따른 EDLC 특성비교

  • Yang, Sun-Hye (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Jeon, Min-Je (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Kim, Ick-Jun (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)
  • 양선혜 (한국전기연구원, 전지연구그룹) ;
  • 전민제 (한국전기연구원, 전지연구그룹) ;
  • 김익준 (한국전기연구원, 전지연구그룹) ;
  • 문성인 (한국전기연구원, 전지연구그룹) ;
  • 김현수 (한국전기연구원, 전지연구그룹)
  • Published : 2006.11.09
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Abstract

This work describes the effect of binders, such as carboxymethylcellulose (CMC), CMC+Polytetrafluoroethylene (PTFE) and PTFE, on the electrochemical and mechanical properties of activated carbon-electrode for electric double layer capacitor. The cell capacitors using the electrode bound with binary binder composed of CMC and PTFE, especially m composition CMC ; PTFE = 60 : 40 wt %, has exhibited the better rate capability and the lower internal resistance than those of the cell capacitor with CMC. On the other hand, the sheet type electrode kneaded with PTFE was bonded with conductive adhesive on Al foil. This cell capacitor using the electrode with PTFE exhibited the best mechanical properties and rate capability compared to the CMC and CMC+PTFE one These behaviors could be explained by the well-developed network structure of PTFE fibrils during the kneading process.

Keywords