直接甲醇燃料电池阻醇膜电极的研究  

Study on methanol-resistant MEA for DMFCs

作　　者：孙海[1] 孙公权[1] 王素力[1] 毛庆[1] 汪国雄[1] 杨少华[1] 辛勤[1] 

机构地区：[1]中国科学院大连化学物理研究所直接醇燃料电池实验室

出　　处：《电源技术》2007年第2期106-108,共3页Chinese Journal of Power Sources

基　　金：国家高技术研究发展计划资助项目(2003AA517040);国家自然科学基金资助项目(20173060);中国科学院知识创新工程领域前沿项目(K2003D2);中国科学院方向性项目(kGCX2-SW-310)

摘　　要：采用化学镀方法成功制备了Pd/Nafion复合膜。用极限电流、循环伏安和阳极极化等方法对低温、高浓度进料条件下Pd/Nafion复合膜直接甲醇燃料电池(DMFC)进行研究。结果表明,Pd膜对甲醇电氧化无明显催化作用;在高浓度时抑制甲醇渗透效果明显,30℃时,5mol/L甲醇的渗透极限电流密度从267mA/cm2降低为170mA/cm2;低温时,甲醇氧化表观反应级数不为0。Pal/Nafion composite membrane was prepared by electroless chemical deposition. DMFC with Pd/Nafion composite membrane was studied at low temperature and high concentration by limiting current density, cyclic voltammetry and anode polarization methods. The results show that Pd layer has no obvious catalytic effect on electro-oxidation of methanol, the permeability of methanol is suppressed effectively at high concentration, methanol permeation limiting current density decreases from 267 mA/cm^2 to 170 mA/cm^2 for 5 mol/L methanol at 30 ℃; reaction order of methanol oxidation at low temperature is not zero.

关 键 词：直接甲醇燃料电池 化学镀 甲醇渗透 PD膜 

分 类 号：TM911.4[电气工程—电力电子与电力传动]