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Annihilation Process of Positron in Degraded Nafion~®-117

机译:降解Nafion〜®-117中正电子的灭过程

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摘要

Annihilation process of positron in Nafion-117 was investigated under several kinds of conditions to elucidate degradation process of polymer electrolyte membrane. It was found that ortho-positronium stayed beside cluster wall and side chains and its lifetime reflected cluster size. Annihilation process of positron was found to be greatly influenced by the electronic state of sulfonic group. These results showed that positron annihilation spectroscopy would be good tool to detect degradation of polymer electrolyte membrane.
机译:在几种条件下研究了Nafion-117中正电子的ni灭过程,以阐明聚合物电解质膜的降解过程。结果发现,正正电子停留在簇壁和侧链的旁边,其寿命反映了簇的大小。发现正电子的hil灭过程受磺酸基团电子状态的影响很大。这些结果表明,正电子an没光谱将是检测聚合物电解质膜降解的良好工具。

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  • 来源
  • 会议地点 Smolenice Castle(SK)
  • 作者单位

    Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-00047, Japan;

    Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-00047, Japan;

    Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-00047, Japan;

    Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan;

    Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Polymer electrolyte membrane; Nafion; Fuel cell; Positron; PAS;

    机译:高分子电解质膜; Nafion;燃料电池;正电子聚苯乙烯;

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