物理化学学报 >> 1998, Vol. 14 >> Issue (04): 361-364.doi: 10.3866/PKU.WHXB19980415

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催化剂制备工艺对PEMFC氧电极性能的影响

司永超, 韩佐青, 陈延禧   

  1. 天津大学应用化学系，天津 300072
  • 收稿日期:1997-07-14 修回日期:1997-10-09 发布日期:1998-04-15
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Effect of Catalyst Fabrication Method on the Performance of Oxygen Electrode in PEMFC

Si Yong-Chao, Han Zuo-Qing, Chen Yan-Xi   

  1. Department of Applied Chemistry,Tianjin University,Tianjin 300072
  • Received:1997-07-14 Revised:1997-10-09 Published:1998-04-15
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关键词: 聚合物电解质膜燃料电池(PEMFC), 氧电极, 催化剂制备工艺, Pt/C电催化剂

Abstract:

The effects of two catalyst fabrication techniques, impregnation method and colloidal method, on the performance of the oxygen electrode are studied and the difference in the catalytic activity of the two kinds of catalysts towards oxygen reduction are also analyzed with the aid of TEM and XRD. Based on the results and analysis, the following conclusions are obtained: the catalyst fabrication technique exerts an effect on the performance of the oxygen electrode, com-paring the performance of the Pt/C catalyst prepared by impregnation method with that of the Pt/C catalyst prepared by colloidal method, the latter shows a higher catalytic activity towards oxygen reduction; Pt/C electrocatalyst has small particle size and large fraction of Pt(111) crystal surface.

Key words: Polymer electrolyte membrane fuel cells(PEMFCs), Oxygen electrode, Pt/C electrocatalyst, Catalyst fabrication technique