Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Charge/discharge Characteristics of Polypyrrole/SPE/Li Cell with Polypyrrole film Prepared by Electropolymerization Method as a Function of Temperature

전해중합법에 의한 Polypyrrole/SPE/Li Cell의 온도에 따른 충방전 특성

  • Kim, J.U. (Dept. of Electrical Eng., Chonnam National Univ.) ;
  • Yu, Y.H. (Dept. of Electrical Eng., Han Young Technical College) ;
  • Cho, J.C. (Dept. of Electronic Eng., Chodang Univ.) ;
  • Jeong, W.J. (Dept. of Inform. and Telecomm. Eng., Hanlyo Univ.) ;
  • Park, G.C. (Dept. of Electrical Eng., Mokpo Univ.) ;
  • Park, B.K. (Dept. of Electrical Eng., Chonbuk sanup Univ.) ;
  • Gu, H.B. (Dept. of Electrical Eng., Chonnam National Univ.) ;
  • Moon, S.I. (Battery Technology Team, Korea Electrotechnology Research Institute)
  • 김종욱 (전남대학교 전기공학과) ;
  • 유영한 (한영공업전문대학 전기과) ;
  • 조재철 (초당대학교 전기공학과) ;
  • 정운조 (한려대학교 정보통신공학과) ;
  • 박계춘 (목포대학교 전기공학과) ;
  • 박복기 (전북산업대 전기공학과) ;
  • 구할본 (전남대학교 전기공학과) ;
  • 문성인 (한국전기연구소 전기재료연구부 전지기술연구팀)
  • Published : 1996.07.22
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Abstract

The purpose of this study is to research and develop polypyrrole(PPy) positive for thin film rechargeable lithium battery. We investigated cyclic voltammetry, AC impedance response and charge/discharge cycling of PPy/SPE/Li cells as a function of temperature. The redox capacity of $PPy/CF_{3}SO_{3}$ film was the most large. The discharge capacity of PPy/SPE/Li cell with $PPy/CF_{3}SO_{3}$ film was higher than those of $PPy/ClO_{4}$ and $PPy/AsF_6$ films at all cycles. The energy density of PPy/SPE/Li cells during 1st cycle was 73, 90 and 101Wh/kg at $25^{\circ}C$, $45^{\circ}C$ and $60^{\circ}C$, respectively. The improvement of energy density is due to reduction of charge-transfer resistance associated doping-undoping process in PPy film with Increasing temperature. $PPy/CF_{3}SO_{3}$ film shows a good property on charge/discharge cycling in PEO-$LiClO_4$-PC-EC electrolyte.

Keywords