Electrochemical Properties of Fluoro-<i>γ</i>-Butyrolactone and Its Application to Lithium Rechargeable Cells

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  • TAKEHAEA Masahiro
    Department of Applied Chemistry, Faculty of Engineering, Tokyo Polytechnic University Mitsubishi Chemical Group Science and Technology Research Center, Inc.
  • EBARA Ryo
    Department of Applied Chemistry, Faculty of Engineering, Tokyo Polytechnic University
  • NANBU Noritoshi
    Department of Applied Chemistry, Faculty of Engineering, Tokyo Polytechnic University
  • UE Makoto
    Mitsubishi Chemical Group Science and Technology Research Center, Inc.
  • SASAKI Yukio
    Department of Applied Chemistry, Faculty of Engineering, Tokyo Polytechnic University

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Other Title
  • Electrochemical Properties of Fluoro-γ-Butyrolactone and Its Application to Lithium Rechargeable Cells
  • Electrochemical Properties of Fluoro ガンマ Butyrolactone and Its Application to Lithium Rechargeable Cells

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Abstract

<p>A mixture of α-fluoro and β fluoro-γ-butyrolactone (30 : 70 mol%; F-γ-BLmix) was prepared by the direct fluorination of γ-butyrolactone (γ-BL) and its physical properties and its performances as an electrolyte solvent were examined for lithium rechargeable cell application. Its relative permittivity and viscosity was more than two times of those of γ-BL. Its lithium cycling efficiency on a Ni electrode was compared with γ-BL and propylene carbonate (PC) using LiClO4, LiBF4, and LiPF6. Among every combination, LiPF6/F-γ-BLmix electrolyte afforded the best cycling efficiency due to the smoothest surface formation, however, the cycle performance of Li/LiCoO2 cell using LiPF6/F-γ-BLmix was not as good as the one using LiPF6/PC presumably due to its higher film resistance.</p>

Journal

  • Electrochemistry

    Electrochemistry 71 (12), 1172-1176, 2003-12-05

    The Electrochemical Society of Japan

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