PEMFC在0℃以下环境启动的研究  

Study on PEMFC start-up at subzero environments

作　　者：孙树成[1] 俞红梅[1] 侯俊波[1] 王宏卫[1] 明平文[1] 衣宝廉[1] 

机构地区：[1]中国科学院大连化学物理研究所燃料电池工程中心,辽宁大连116023

出　　处：《电源技术》2007年第8期626-629,共4页Chinese Journal of Power Sources

基　　金：国家"863"项目(2005AA501660);国家自然科学基金(20206030)

摘　　要：对质子交换膜燃料电池(PEMFC)0℃以下环境启动进行了研究。考察了-10℃保存对电池性能的影响。通过极化曲线、电化学阻抗(EIS)、循环伏安(CV)和渗氢电流等方法,考察了电池在-5℃经过7次启动后的性能变化,并通过对不同启动温度的孔结构测量,考察了膜电极(MEA)的微观变化。最后得出结论:-5℃启动对PEMFC结构及性能影响很小,但-10℃自启动对PEMFC有着很大程度的损坏。Proton exchange membrane fuel cell（PEMFC） start-up at subzero environments were investigated. Effect of freezing/thaw cycles on fuel cell performance was studied. The PEMFC performance after 7 times startup at -5℃ and effect of startup temperature on cell performance were studied, and the change of membrane electrode assembly （MEA） was analyzed by means of electrochemical impedance spectrum（EIS）, cyclic voltammetry（CV） and pore size measurement. Finally, it is concluded that the PEMFC performance has no loss at -5℃ startup, but the self-start seriously damages the performance of PEMFC at -10℃.

关 键 词：质子交换膜燃料电池(PEMFC) 0℃以下环境 低温启动 

分 类 号：TM911.4[电气工程—电力电子与电力传动]