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Electrochemical and ESR Study on Pt-TiOx/C Electrocatalysts with Enhanced Activity for ORR

Authors

  • Prof. Dr. Go Sakai,

    Corresponding author
    1. Department of Applied Chemistry, Faculty of Engineering, University of Miyazaki, Gakuen Kibanadai-nishi 1-1, Miyazaki 889-2192 (Japan)
    • Go Sakai, Department of Applied Chemistry, Faculty of Engineering, University of Miyazaki, Gakuen Kibanadai-nishi 1-1, Miyazaki 889-2192 (Japan)

      Tatsuya Arai, Fuel Cell System Department Division, Higashi-Fuji Technical Center, Toyota Motor Corporation, Shizuoka 410-1193 (Japan)

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  • Tatsuya Arai,

    Corresponding author
    1. Fuel Cell System Department Division, Higashi-Fuji Technical Center, Toyota Motor Corporation, Shizuoka 410-1193 (Japan)
    • Go Sakai, Department of Applied Chemistry, Faculty of Engineering, University of Miyazaki, Gakuen Kibanadai-nishi 1-1, Miyazaki 889-2192 (Japan)

      Tatsuya Arai, Fuel Cell System Department Division, Higashi-Fuji Technical Center, Toyota Motor Corporation, Shizuoka 410-1193 (Japan)

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  • Toshiaki Matsumoto,

    1. Department of Applied Chemistry, Faculty of Engineering, University of Miyazaki, Gakuen Kibanadai-nishi 1-1, Miyazaki 889-2192 (Japan)
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  • Tetsuya Ogawa,

    1. Fuel Cell System Department Division, Higashi-Fuji Technical Center, Toyota Motor Corporation, Shizuoka 410-1193 (Japan)
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  • Mayumi Yamada,

    1. Fuel Cell System Department Division, Higashi-Fuji Technical Center, Toyota Motor Corporation, Shizuoka 410-1193 (Japan)
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  • Dr. Koshi Sekizawa,

    1. Fuel Cell System Department Division, Higashi-Fuji Technical Center, Toyota Motor Corporation, Shizuoka 410-1193 (Japan)
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  • Takumi Taniguchi

    1. Fuel Cell System Department Division, Higashi-Fuji Technical Center, Toyota Motor Corporation, Shizuoka 410-1193 (Japan)
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  • ORR: Oxygen Reduction Reaction

Abstract

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Pt-TiOx/C electrocatalysts possess specific activities for the oxygen reduction reaction of about 1.5 times higher than that of conventional Pt/C. Electron-spin resonance spectra suggest that the specific activity of Pt-TiOx/C is related to the amount of ESR-active species.

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