Surface Science of Electrode Catalysts using Carbon Nanotube in Polymer Electrolyte Fuel Cells

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  • KONDO Takahiro
    Graduate School of Pure and Applied Sciences, University of Tsukuba
  • NAKAMURA Junji
    Graduate School of Pure and Applied Sciences, University of Tsukuba

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  • カーボンナノチューブを担体とした燃料電池電極触媒の表面科学
  • カーボン ナノチューブ オ タンタイ ト シタ ネンリョウ デンチ デンキョク ショクバイ ノ ヒョウメン カガク

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Abstract

  Significant improvement of the Pt-electrode in polymer electrolyte fuel cells has been found by replacing the support material from carbon black to multi-walled carbon nanotube (CNT). In order to explore the origin for the better performance of the Pt/CNT catalysts, model studies using Pt nano-particles deposited on a highly oriented pyrolytic graphite (HOPG) have been carried out as a surface science approach. It is suggested that monolayer of Pt nano-particles show a quite different electronic nature, leading to very high catalytic activity.<br>

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