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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Conductivity of PAN/PVDF based Polymer Electrolyte as a Function of Plasticizer Mixed Ratio

가소제 혼합비에 따른 PAN/PVDF계 고분자 전해질의 이온 전도 특성

  • Lee, Jae-An (Dept. of Electrical Eng., Chonnam National Univ) ;
  • Kim, Jong-Uk (Dept. of Electrical Eng., Chonnam National Univ) ;
  • Gu, Hal-Bon (Dept. of Electrical Eng., Chonnam National Univ)
  • 이재안 (전남대학교 전기공학과) ;
  • 김종욱 (전남대학교 전기공학과) ;
  • 구할본 (전남대학교 전기공학과)
  • Published : 2000.05.13
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Abstract

The purpose of this study is to research and develop solid polymer electrolyte(SPE) for Li polymer battery. This paper describes temperature dependence of conductivity, impedance spectroscopy, electrochemical properties of PAN/PVDF electrolytes as a function of a mixed ratio. PAN/PVDF based polymer electrolyte films were prepared by thermal gellification method of preweighed PAN/PVDF, plasticizer and Li salt. By adding PVDF and as a function of plasticizer mixed ratio to PAN-LiClO4 electrolyte, its conductivity was higher than that of PAN-$LiClO4_4$ electrolyte. The conductivity of PAN/PVDF electrolytes was $10^{-3}S/cm$. $10PAN10PVDFLiClO_4PC_5EC_5$ electrolyte shows the better conductivity of the others. Steady state current method and ac impedance used for the determination of transference numbers in PAN/PVDF electrolyte film. The transference number of $10PAN10PVDFLiClO_4PC_5EC_5$ electrolyte is 0.45.

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