Investigation of oxygen reduction reaction and methanol tolerance on the carbon supported Pt-Pd catalysts

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• 作者：Yongfu Tang ; Faming Gao ; Shichun Mu ; Shengxue Yu…
• 关键词：oxygen reduction reaction ; methanol tolerance ; catalyst ; fuel cell
• 刊名：Russian Journal of Electrochemistry
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：51
• 期：4
• 页码：345-352
• 全文大小：2,251 KB
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• 作者单位：Yongfu Tang (1)
  Faming Gao (1)
  Shichun Mu (2)
  Shengxue Yu (1)
  Yufeng Zhao (1)
  
  1. Hebei Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao, 066004, China
  2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Electrochemistry
  Physical Chemistry
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3342

文摘

Carbon supported Pt-Pd (Pt-Pd/C) catalysts with different Pt/Pd ratios were prepared by microwave assisted ethylene glycol method and characterized by X-ray diffraction (XRD), transmission electron spectroscopy (TEM) and electrochemical measurements. The results reveal that the metal nanoparticles of Pt-Pd/C catalysts are uniformly dispersed on the carbon support and exist as alloys with face centered cubic (FCC) structures. The effects of both preparation process and Pt/Pd ratios on the structure and catalytic activity of the Pt-Pd/C catalysts were investigated. With the increase of Pd content, the catalytic activity for ORR is deteriorated due to the increased metal particle size of Pt-Pd/C catalysts, while improving the methanol tolerance. Among the Pt-Pd/C catalysts with different Pt/Pd ratios, the Pt₃Pd/C catalyst, which have the highest Pt/Pd ratios, exhibits higher specific mass activities toward oxygen reduction reaction (ORR) than that of the commercial Pt/C catalyst.