高等学校化学学报

高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (05): 1007.doi: 10.3969/j.issn.0251-0790.2012.05.025

• 物理化学 • 上一篇    下一篇

直接甲醇燃料电池的Ir-Fe/C 阴极催化剂性能

郭琦1, 李林儒2, 陆亮2, 季云2, 陆天虹2   

  1. 1. 江苏教育学院生命科学与化学学院, 南京 210013;
    2. 江苏省新型动力电池重点实验室, 南京师范大学化学与材料科学学院, 南京 210097
  • 收稿日期:2011-11-07 出版日期:2012-05-10 发布日期:2012-05-10
  • 作者简介:陆天虹, 男, 博士, 教授, 博士生导师, 主要从事化学电源研究. E-mail: tianhonglu@263.net
  • 基金资助:

    国家自然科学基金(批准号: 21073094)和江苏高校优势学科建设工程资助项目资助.

Electrocatalytic Performance of Cathodic Ir-Fe/C Catalyst in Direct Methanol Fuel Cell

GUO Qi1, LI Lin-Ru2, LU Liang2, JI Yun2, LU Tian-Hong2   

  1. 1. School of Life Science and Chemistry, Jiangsu Institute of Education, Nanjing 210013, China;
    2. Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China
  • Received:2011-11-07 Online:2012-05-10 Published:2012-05-10

PDF (PC)

被引次数

5

摘要： 合成了直接甲醇燃料电池的Ir-Fe/C阴极催化剂, 用X射线衍射(XRD)谱和X射线能量色散谱(EDS)等方法对该催化剂进行表征, 研究了碳载Ir-Fe(Ir-Fe/C)催化剂对氧还原的电催化活性和抗甲醇能力. 研究发现, 氧在碳载Ir(Ir/C)和Ir-Fe/C催化剂电极上还原的起始氧还原电位分别为0.57和0.65 V. 在0.2 V下的电流密度分别为4.6和5.8 mA/cm2, 表明Ir-Fe/C催化剂对氧还原的电催化性能要优于Ir/C催化剂, 而且Ir-Fe/C催化剂也有很好的抗甲醇能力.

关键词: 碳载Ir-Fe催化剂, 甲醇氧化, 抗甲醇能力, 直接甲醇燃料电池

Abstract: Ir-Fe/C catalyst was prepared. The electrocatalytic activity of the Ir-Fe/C catalyst for the oxygen reduction and its methanol tolerance ability were investigated, based on the characterization with X-ray diffractometer(XRD) and energy dispersive spectrometer(EDS). The results show that the onset potentials of the oxygen reduction at the Ir/C and Ir-Fe/C catalyst electrodes are 0.57 and 0.65 V, respectively, and the current densities at 0.2 V are 4.6 and 5.8 mA/cm2, respectively. It indicates that the electrocatalytic activity of the Ir-Fe/C catalyst for the oxygen reduction is better than that of the Ir/C catalyst. In addition, the Ir-Fe/C catalyst possesses the high methanol tolerance ability. These results lay a strong basis for the use of the Ir-Fe/C cathodic catalyst in direct methanol fuel cell(DMFC).

Key words: Carbon supported Ir-Fe catalyst, Methanol oxidation, Methanol tolerance ability, Direct methanol fuel cell(DMFC)

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