In Situ Time-Resolved XAFS of Transitional States of Pt/C Cathode Electrocatalyst in an MEA During PEFC Loading with Transient Voltages

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• 作者：Sutasinee Kityakarn (1) (2) (3)
  Takahiro Saida (1)
  Aya Sode (1)
  Nozomu Ishiguro (1) (2)
  Oki Sekizawa (4)
  Tomoya Uruga (4) (5)
  Kensaku Nagasawa (4)
  Takashi Yamamoto (6)
  Toshihiko Yokoyama (1)
  Mizuki Tada (1) (2)
  
• 关键词：Polymer electrolyte fuel cell ; Pt catalyst ; Time ; resolved XAFS ; In situ analysis ; Transient voltage
• 刊名：Topics in Catalysis
• 出版年：2014
• 出版时间：June 2014
• 年：2014
• 卷：57
• 期：10-13
• 页码：903-910
• 全文大小：
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• 作者单位：Sutasinee Kityakarn (1) (2) (3)
  Takahiro Saida (1)
  Aya Sode (1)
  Nozomu Ishiguro (1) (2)
  Oki Sekizawa (4)
  Tomoya Uruga (4) (5)
  Kensaku Nagasawa (4)
  Takashi Yamamoto (6)
  Toshihiko Yokoyama (1)
  Mizuki Tada (1) (2)
  
  1. Institute for Molecular Science, 38 Nishigo-naka, Myodaiji, Okazaki, Aichi, 444-8585, Japan
  2. Research Center for Materials Science, Nagoya University, Furo, Chikusa, Aichi, 464-8602, Japan
  3. Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, 10903, Thailand
  4. Innovation Research Center for Fuel Cells, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585, Japan
  5. Japan Synchrotron Radiation Research Institute, SPring-8, 1-1-1 Koto, Sayo, Hyogo, 679-5198, Japan
  6. Department of Mathematics and Material Sciences, Faculty of Integrated Arts and Sciences, The University of Tokushima, 1-1 Minamijosanjima, Tokushima, 770-8502, Japan
  
• ISSN：1572-9028

文摘

The transitional states of a Pt/C cathode electrocatalyst in the membrane electrode assembly of a polymer electrolyte fuel cell during loading with transient voltages were systematically analyzed by in situ time-resolved X-ray absorption fine structure with time resolution of 100?ms. The results suggest that the local coordination of the Pt cathode electrocatalyst was unaffected by the transient voltages during both rapid and gradual loading over 0-0?s.