表面修飾炭素材料の作製と固体高分子形燃料電池および水素–空気二次電池用材料としての適用

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タイトル別名
  • Surface modification of carbonaceous materials and their use in polymer electrolyte fuel cells and hydrogen-air secondary batteries
  • ヒョウメン シュウショク タンソ ザイリョウ ノ サクセイ ト コタイ コウブンシケイ ネンリョウ デンチ オヨビ スイソ-クウキ ニジ デンチ ヨウザイリョウ ト シテ ノ テキヨウ

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Surface modification techniques for carbonaceous materials such as composites, Ketjen black, and vapor grown carbon fibers (VGCFs) are introduced and their use in polymer electrolyte fuel cells (PEFCs) and hydrogen-air secondary batteries are reviewed. A graphite powder/resin composite used as a bipolar plate of PEFCs is corroded with the evolution of CO2 over 1.3 V in a dilute HClO4 solution at 80 °C. A tin oxide coating is found to be effective in preventing corrosion. A similar effect of a tin oxide coating is also found for Ketjen black as the electrode catalyst support of PEFCs. Furthermore, after loading Pt as the catalyst it is found that the tin oxide coating of Ketjen black gives better catalytic activity. O-Methylated Ketjen black is prepared and its performance as the catalyst support is also discussed. VGCFs decorated with LaMnO3 are also prepared and have promise as the electrode material for a hydrogen-air secondary battery.

収録刊行物

  • 炭素

    炭素 2014 (263), 114-122, 2014

    炭素材料学会

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