催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (4): 606-611.DOI: 10.3724/SP.J.1088.2011.01229

• 研究论文 • 上一篇    下一篇

用于质子交换膜燃料电池抗 CO 的 Pt-CeO2/C 催化剂的制备和表征

张海艳 1,2, 林瑞 1,3, 曹春晖 1,3, 马建新 1,2,3   

  1. 1 同济大学新能源汽车工程中心, 上海 201804; 2 华东理工大学资源与环境工程学院, 上海 200237; 3 同济大学汽车学院, 上海 201804
  • 收稿日期:2010-12-14 修回日期:2011-01-05 出版日期:2011-04-18 发布日期:2014-08-30

Preparation and Characterization of CO Tolerance Pt-CeO2/C Catalyst for Proton Exchange Membrane Fuel Cells

ZHANG Haiyan1,2, LIN Rui1,3,*, CAO Chunhui1,3, MA Jianxin1,2,3,*   

  1. 1Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China; 2School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; 3 School of Automotive Studies, Tongji University, Shanghai 201804, China
  • Received:2010-12-14 Revised:2011-01-05 Online:2011-04-18 Published:2014-08-30

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摘要： 采用一步沉淀法, 制备了纳米级 Pt-CeO2/C 电催化剂. 透射电镜和 X 射线衍射表征结果表明, 制备的催化剂 Pt 颗粒均匀分散于碳载体表面, 其粒径主要分布于 1.5~2.5 nm. 将 Pt-CeO2/C 催化剂制备成质子交换膜燃料电池膜电极, 经循环伏安和单电池极化曲线测试发现, Pt-CeO2/C 催化剂性能与 Pt/C 催化剂的相当. 一氧化碳消除伏安测试和单电池的抗一氧化碳性能测试结果表明, Pt-CeO2/C 催化剂具有很好的抗一氧化碳氧化性能.

关键词: 质子交换膜燃料电池, 抗一氧化碳中毒, 铂, 二氧化铈, 电化学比表面积, 一氧化碳消除伏安测试

Abstract: The nano-scale Pt-CeO2/C catalyst was prepared by the co-precipitation method. The results of transmission electron microscopy and X-ray diffraction analysis show that the average size of Pt-CeO2/C noble metal particles (1.5~2.5 nm) is highly dispersed on the carbon supports. Pt-CeO2/C and a commercial Pt/C catalyst from Johnson Matthey Company were investigated by cyclic voltammetry and CO-stripping experiment. The cyclic voltammetry test shows that the Pt-CeO2/C catalyst has similar electrochemical surface area to Pt/C, which indicates that the home-made Pt-CeO2/C catalyst has high electrocatalytic activity for hydrogen oxidation. From the CO-stripping experiment, the Pt-CeO2/C catalyst showed very high CO tolerant activity compared to the Pt/C catalyst. We also fabricated the membrane electrode assembly with Pt-CeO2/C or Pt/C catalyst on the anode (the cathode also used the Pt/C catalyst) and found that Pt-CeO2/C catalyst showed higher performance than Pt/C catalyst. A tentative mechanism was proposed for a possible role of Ce as a co-catalyst in the Pt/C system for CO electrooxidation.

Key words: proton exchange membrane fuel cell, carbon monoxide tolerance, platinum, ceria, electrochemical surface area, carbon monoxide-stripping