车用PEM燃料电池活化条件的优化  

Optimization of the Activation Condition of a PEM Fuel Cell for Automotive

作　　者：李鹏程[1] 裴普成[2] 何勇灵[1] 赵政[2] 

机构地区：[1]北京航空航天大学交通科学与工程学院,北京100191 [2]清华大学 汽车安全与节能国家重点实验室,北京100084

出　　处：《中北大学学报（自然科学版）》2013年第2期178-182,共5页Journal of North University of China(Natural Science Edition)

基　　金：国家自然科学基金资助项目(20976095);国家973资助项目(2012CB215500);高等学校博士学科点专项科研基金资助课题(20090002110074);国家863资助项目(2012AA1106012;2012AA053402)

摘　　要：活化对车用质子交换膜燃料电池性能有重要影响.通过设计燃料电池变流强制活化程序,对实验室设计制造的燃料电池单片进行了4次活化实验.活化实验一、实验二和实验三的结果显示,经过活化燃料电池的性能得到了提升,但是提高幅度不大;而且燃料电池在加载至0.5A/cm2以上时,电压下降较快.对氧气不加湿进行了活化实验四,结果表明电池的最大加载电流密度由1.06A/cm2提高至1.75A/cm2,电池的性能得到了明显的提升.The activation process has an important impact on the performance of a proton exchange membrane（PEM） fuel cell for automotive.A forced current-change activation procedure was designed and used to active homemade PEM fuel cell four times.The results of the first three activation show that the performance of the fuel cell is elevated,but the elevation is not quite big.Moreover,the voltage of the fuel cell decreased fast when the fuel cell was loaded at 0.5 A/cm2 and above.The forth activation was carried on with the oxygen not being humidified.The results demonstrate that the performance of the fuel cell is improved obviously and the maximum load current density is increased from 1.06 A/cm2 to 1.75 A/cm2.

关 键 词：质子交换膜燃料电池 车用 活化 变流强制活化 

分 类 号：TK91[动力工程及工程热物理]