Characteristics of Interpenetrated Polymer Network System made of Polyethylene Oxide-LiBF<sub>4</sub> Complex and Polystyrene as the Electrolyte for Lithium Secondary Battery

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  • MOMMA Toshiyuki
    Graduate School of Science and Engineering, Waseda University CREST, Japan Science and Technology Agency
  • ITO Hiroaki
    Graduate School of Science and Engineering, Waseda University
  • NARA Hiroki
    Graduate School of Science and Engineering, Waseda University
  • MUKAIBO Hitomi
    Graduate School of Science and Engineering, Waseda University CREST, Japan Science and Technology Agency
  • PASSERINI Stefano
    ENEA, C.R. Casaccia
  • OSAKA Tetsuya
    Graduate School of Science and Engineering, Waseda University

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  • Characteristics of Interpenetrated Polymer Network System made of Polyethylene Oxide-LiBF4 Complex and Polystyrene as the Electrolyte for Lithium Secondary Battery

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<p>We propose a polymer blending method for preparing the PEO (polyethylene oxide)-LiBF4 complex electrolyte for lithium secondary battery applying to the IPN (interpenetrated polymer network) gel electrolyte. The polymer blend mixture of PEO-PS (polystyrene)-LiBF4 was prepared as a film by the hot-pressing method. The resulting IPN film was plasticized with the electrolyte solution of 0.5 M LiBF4/EC (ethylene carbonate)-PC (propylene carbonate) (1 : 1 vol.), in which the formation of PEO-LiBF4 complex was confirmed by the Raman spectroscopy. The basic properties as an electrolyte of Ii metal batteries, i.e., ionic conductivity, chemical stability at the polymer gel electrolyte/lithium metal interface, and charge-discharge performance of the Li/(PEO-LiBF4/PS) gel electrolyte/LiCoO2 cell were studied and discussed.</p>

Journal

  • Electrochemistry

    Electrochemistry 71 (12), 1182-1186, 2003-12-05

    The Electrochemical Society of Japan

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