高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (4): 676.

• 研究论文 • 上一篇    下一篇

合金化程度对炭载Pt-Ru催化剂性能的影响

陈煜1,  唐亚文1,  吴伟2,  曹洁明2,  刘长鹏3,  邢巍3,  陆天虹1,3   

  1. 1. 南京师范大学化学与环境科学学院,  南京 210097; 2. 南京航空航天大学材料科学与技术学院, 南京 210016; 3. 中国科学院长春应用化学研究所,  长春 130022
  • 收稿日期:2005-07-04 出版日期:2006-04-10 发布日期:2006-04-10
  • 通讯作者: 陆天虹(1943年出生), 男, 博士, 研究员, 博士生导师, 主要从事生物电化学和化学电源研究. E-mail: tianhonglu@263.net
  • 基金资助:

    国家“八六三”计划项目(批准号: 2003AA517060)、 国家自然科学基金(批准号: 20373068,  20433060,  20573057)、 江苏省科技厅高新技术基金(批准号: BG2003022)、 江苏省教育厅基金(批准号: JH02-080, 05KJB150061)和国家“211”工程重点项目资助.

Effect of Alloying Extent of Carbon Supported  Pt-Ru Catalyst on Its Electrocatalytic Activity

CHEN Yu1,  TANG Ya-Wen1,  WU Wei 2,  CAO Jie-Ming2,  LIU Chang-Peng3,  XING Wei3,  LU Tian-Hong 1,3*   

  1. 1. College of Chemistry and Environment Science,  Nanjing Normal University,  Nanjing 210097,  China; 
    2. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics,  Nanjing 210016,  China; 
    3. Changchun Institute of Applied Chemistry,  Chinese Academy of Sciences,  Changchun 130022,  China
  • Received:2005-07-04 Online:2006-04-10 Published:2006-04-10
  • Contact: LU Tian-Hong,E-mail: tianhonglu@263.net

摘要:

在含四氢呋喃(THF)的水溶液中,  室温下用NaBH4还原H2PtCl6和RuCl3制得Pt-Ru/C催化剂.  其Pt-Ru 粒子的合金化程度较高,  平均粒径较小, 相对结晶度较低.  因此对甲醇氧化的电催化活性远高于Pt-Ru 粒子的平均粒径和相对结晶度相似的, 而且Pt-Ru合金化程度低的商业化的E-TEK的Pt-Ru/C催化剂,  表明Pt-Ru的合金化程度对Pt-Ru/C催化甲醇氧化的电催化活性有很大的影响.

关键词: Pt-Ru/C催化剂;   四氢呋喃;   直接甲醇燃料电池;   合金化程度

Abstract:

It was found that the carbon supported Pt-Ru catalyst(Pt-Ru/C) with the Pt-Ru particles with high alloying,  small average size and low relative crystallinity can be prepared in the aqueous solution with tetrahydrofuran(THF) using NaBH4 as a reductant for reducing H2PtCl6 and RuCl3 at  room temperature.  The electrocatalytic activity of the Pt-Ru/C catalyst for the methanol oxidation is much higher than that of the commercial E-TEK Pt-Ru/C catalyst with the similar average size and relative crystallinity,  but low alloying.  It is indicated that the alloying of Pt-Ru could significantly affect the electrocatalytic activity of the Pt-Ru/C catalyst for the methanol oxidation.  The Pt-Ru/C catalyst with high alloying can be obtained because THF and H2PtCl6 can form the complex leading to that the reduction potentials of H2PtCl6 and RuCl3 are closed in the aqueous solution with THF.

Key words: Pt-Ru/C catalyst; Tetrahydrofuran; Direct methanol fuel cell; Alloying

中图分类号: 

TrendMD: