浸渍还原法对DMFC阳极催化剂的影响  

The Influence of Infused Reduction Method On the DMFC Anode Catalyst

作　　者：魏旭芳[1] 陈维民 

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110159 [2]辽宁省特种储备电源工程技术研究中心,辽宁沈阳110159

出　　处：《沈阳理工大学学报》2011年第2期36-39,共4页Journal of Shenyang Ligong University

基　　金：辽宁省教育厅高校科研计划项目(2009B154)

摘　　要：采用三种不同还原方法制备直接甲醇燃料电池PtRu/C阳极催化剂。TEM测试结果显示,乙二醇还原法制备的催化剂具有较小的平均粒径,且催化剂粒子在载体表面分布均匀。循环伏安测试表明,乙二醇还原法和甲醛还原法制备的催化剂具有较低的起始氧化电位和较高的甲醇氧化电流密度。计时电流法试验表明,乙二醇还原法制备的催化剂活性衰减较慢,具有较高的电化学稳定性.DMFC anode catalyst PtRu/C was prepared by three different reduction methods.TEM test showed that the catalyst prepared by ethylene glycol method has smaller average particle size and is distributed on the support surface homogeneously.Cyclic voltammetry test showed that the catalysts prepared by ethylene glycol reduction and formaldehyde reduction have low initial oxidation potentials and high methanol oxidative current densities.Chronoamperometry test showed that the catalyst prepared by ethylene glycol reduction method has greater electrochemical stability than the other ones because its activity attenuation was relatively low.

关 键 词：直接甲醇燃料电池 催化剂 阳极 活性 稳定性 

分 类 号：TM911.4[电气工程—电力电子与电力传动]