自呼吸式MEMS微燃料电池的结构及其性能  

Structure and Performance of Air-breathing MEMS Micro-proton-exchange-membrane Fuel Cells

作　　者：郑丹[1] 李晨忱 袁联群[1] 李文琼[1] 董瑾[1] 郭强[1] 

机构地区：[1]上海应用技术学院化学工程系,上海200233 [2]中国石油辽阳石化分公司炼油厂,辽宁辽阳111003

出　　处：《化学世界》2009年第8期453-456,479,共5页Chemical World

基　　金：863项目(2006AA05Z136);上海市重点学科建设项目(p1501);学院基金项目(KJ2009-08)资助

摘　　要：利用MEMS技术设计并制作了有效面积为1.2cm×1.2cm的不同阳极和阴极结构,将它们组成电池并进行比较。结果表明,阳极采用点-蛇形混合流场,电池峰值功率密度为比点状流场的电池可提高10.4%;阴极采用双层镂空流场,峰值功率密度比单层镂空流场电池增加15.7%。最优结构电池在30%～50%相对湿度下性能良好,200mA恒流放电近610h,电池电压比较稳定。Different anodes and cathodes with active area 1.2 cm×1.2 cm were designed and fabricated using microelectromechanical system（MEMS）technology,and assembled for air-breathing micro proton exchange membrane fuel cells（μPEMFC）.The results indicated that the peak power density（P_ max）of fuel cells with pin-serpentine-combined anode flew field is 10.4% higher than those with pin anode structures.The P_ max of fuel cell with a cathode flew field of two layers with small channels is 15.7% higher than that with a single layer cathode structure. The fuel cell with the best cathode and anode Structure gives excellent performance at 30%~50~ RH, and the cell voltage is steady at a discharge current of 200 mA lasting for 610 h.

关 键 词：质子交换膜燃料电池 微流场结构 自呼吸 MEMS技术 

分 类 号：TQ127.2[化学工程—无机化工]