Silver-lon Solid Electrolytes with High-Conductivity : Silver lodide-Sulfonium lodide Double Salts

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  • TAKAHASHI Takehiko
    Department of Applied Chemistry, Faculty of Engineering, Nagoya University
  • WAKABAYASHI Noboru
    Department of Applied Chemistry, Faculty of Engineering, Nagoya University
  • MIYAZAKI Takao
    Department of Applied Chemistry, Faculty of Engineering, Nagoya University
  • YAMAMOTO Osamu
    Department of Applied Chemistry, Faculty of Engineering, Nagoya University

Bibliographic Information

Other Title
  • 銀イオン高導電性固体電解質:ヨウ化銀-スルホニウム塩系
  • 銀イオン高導電性固体電解質：よう化銀‐スルホニウム塩系

Abstract

The electric conductivities of the silver iodide-substituted sulfonium iodide systems were examined and high conductivity silver-ion electrolytes were found in three systems, viz., C5H11SI-AgI, Me3SI-AgI and Me2EtSI-AgI.<BR>Theseelectrolytes were prepared from AgI and sulfonium iodide' in the molar ratio of n as<BR>MI + n AgI=MAgnIn+1<BR>The dependence of electrical conductivity on the composition showed that the maximum conductivity appeared at 84 mol% AgI for all these three systems. The highest conductivities of the systems, C5H11SI-AgI, Me3SI-AgI and Me2EtSI-AgI, were 0.04, 0.06 and 0.02(Ωcm)-1 at 25 C, respectively. The activation energies for conduction obtained from the temperature dependence of electrical conductivity was 12.6kJ/mol for the C5H11SI-AgI and Me3SI-AgI systems and 16.8kJ/mol for Me2EtSI-AgI. The electronic conductivity of thesesystems measured by Wagner's polarization method was found to be negligibly small, so that the conduction in these systems is essentially ionic.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1975 (2), 266-270, 1975-02-10

    The Chemical Society of Japan

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