催化学报

催化学报 ›› 2009, Vol. 30 ›› Issue (10): 1063-1067.

• 研究论文 • 上一篇    下一篇

Pt/C-RuO2催化剂对提高质子交换膜燃料电池动态响应性能的作用

韩亚坤, 徐洪峰, 卢璐   

  1. 大连交通大学环境与化学工程学院, 辽宁大连 116028
  • 收稿日期:2009-10-25 出版日期:2009-10-25 发布日期:2013-06-06

Effect of Pt/C-RuO2 on Improvement of Dynamic Response of Proton Exchange Membrane Fuel Cells

HAN Yakun, XU Hongfeng*, LU Lu   

  1. College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China
  • Received:2009-10-25 Online:2009-10-25 Published:2013-06-06

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摘要： 通过溶胶混合法将超级电容器材料 RuO2 负载到 Pt/C 上, 制成了 Pt/C-RuO2 催化剂, 并用这种催化剂组装成质子交换膜燃料电池 (PEMFC) 单电池, 测试了其循环伏安曲线和多电位阶跃计时电流. 结果表明, 加入 RuO2 之后, 催化剂的双电层电容明显增大. 单电池的放电曲线测试结果表明, 在加入少量 RuO2(w ≤ 8%) 的情况下, 单电池的性能略有降低. 通过单电池在不同电流下电压动态响应和对脉冲电流的动态响应测试, 表明在加入 RuO2 之后, 单电池电压的瞬间衰减明显减缓. 这说明 RuO2 具有在瞬间加大电流负载时缓冲电池电压的作用, 即以 Pt/C-RuO2 为催化剂的 PEMFC 单电池的动态响应性能大幅度提高.

关键词: 质子交换膜燃料电池, 单电池, 动态响应, 铂, 碳, 二氧化钌

Abstract: The Pt/C-RuO2 catalyst samples were prapared by deposition of hydrated RuO2 on the carbon-supported Pt (Pt/C) catalyst. The cyclic voltammetry and multi-potential steps chronoamperometry results showed that the double layer capacitance of the catalyst samples increased after adding RuO2. The test result of single cell for proton exchange membrane fuel cell (PEMFC) showed that, compared with the Pt/C catalyst, there was a slight loss in cell performance when the mass fraction of RuO2 was lower than 8%. The result of voltage dynamic response to different current steps showed that the voltage of the Pt/C-RuO2 catalyst single cell for PEMFC was more steady than that of Pt/C catalyst, which indicated that RuO2 could buffer the voltage falling when the current increased instantly.

Key words: proton exchange membrane fuel cell, single cell, dynamic response, platinum, carbon, ruthenium oxide