应用化学 ›› 2011, Vol. 28 ›› Issue (01): 44-47.DOI: 10.3724/SP.J.1095.2010.00190

• 研究论文 • 上一篇    下一篇

碳载Pt-P催化剂对氧还原的电催化性能

王彦恩1,曹爽2,唐亚文3,王春1,马晶军1,陆天虹3*   

  1. (1.河北农业大学理学院 保定;2.中国地质大学长城学院地球科学与资源系 保定;
    3.南京师范大学化学与环境科学学院 南京 210097)
  • 收稿日期:2010-04-02 修回日期:2010-05-03 出版日期:2011-01-10 发布日期:2011-01-10
  • 通讯作者: 陆天虹,研究员; Tel:025-83598031; E-mail:tianhonglu@263.net; 研究方向:燃料电池
  • 基金资助:
    科技部“八六三”计划(2007AA05Z143,2007AA05Z159),国家自然科学基金(20873065,21073094)资助项目

Electrocatalytic Performance of Carbon-Supported Pt-P Catalyst for Oxygen Reduction

WANG Yan-En1, CAO Shuang2, TANG Ya-Wen3, WANG Chun1, MA Jing-Jun1, LU Tian-Hong3*   

  1. (1.College of Sciences,Hebei Agricultural University,Baoding;
    2.Earth Sciences and Resources Department,Great Wall College,China University of Geosciences,Baoding;
    3.College of Chemistry and Environmental Science,Nanjing Normal University,Nanjing 210097)
  • Received:2010-04-02 Revised:2010-05-03 Published:2011-01-10 Online:2011-01-10

摘要:

用NaH2PO2液相还原方法制得碳载Pt-P(Pt-P/C)催化剂(m(Pt)∶m(P)=5∶1)。 X射线衍射谱测量表明,Pt-P/C催化剂的Pt衍射峰的2θ值稍大于Pt/C催化剂的相应值,表明P进入了Pt晶格,形成了Pt-P合金。 电化学测试表明,Pt-P/C催化剂对氧还原的电催化性能要比商品化的E-TEK Pt/C催化剂好,其还原电位正移了40 mV。 由于Pt-P/C催化剂中Pt-P粒子的平均粒径和相对结晶度与Pt/C催化剂相似,推测Pt-P/C催化剂对氧还原的电催化性能好于Pt/C催化剂的原因可能为P的作用。

关键词: 质子交换膜燃料电池, 碳载Pt-P催化剂, 碳载Pt催化剂, 氧还原

Abstract:

The carbonsupported Pt-P(Pt-P/C) catalyst(m(Pt)∶m(P)=5∶1) was prepared with NaH2PO2 reduction method. The X-ray diffraction results indicate that the 2θ values of the Pt diffraction peaks of the Pt-P/C catalyst are slightly greater than those of the Pt/C catalyst, illustrating that P has entered into the crystal lattice of Pt and forms the Pt-P alloy. The electrochemical measurements demonstrated that the electrocatalytic performance of the Pt-P/C catalyst for the oxygen reduction is better than that of the commercial E-TEK Pt/C catalyst with 40 mV positive shift of reduction potential, which may be attributed to the P action because the average size and the relative crystallinity of the Pt-P particles in the Pt-P/C catalyst are similar to those in Pt/C catalyst.

Key words: Proton exchange membrane fuel cell, Carbon-supported Pt-P catalyst, Carbon-supported Pt catalyst, Oxygen reduction

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