公开(公告)号：US20120202134A1

公开(公告)日：2012-08-09

申请号：US13261250

申请日：2009-10-08

申请人： Paravastu Badrinarayanan ,  Robert M. Darling ,  Jonathan D. O'Neill

发明人： Paravastu Badrinarayanan ,  Robert M. Darling ,  Jonathan D. O'Neill

IPC分类号： H01M8/10

CPC分类号： H01M8/0202 ,  H01M2008/1095

摘要： A fuel cell for a fuel cell power plant having gas diffusion layers which do not have microporous layers, includes a PEM (9), a cathode comprising at least a cathode catalyst (10) and a gas diffusion layer (17) on one side of the PEM, and an anode comprising at least an anode catalyst (11) and a gas diffusion layer (14) on the opposite side of the PEM, and a porous water transport plate having reactant gas flow field channels (31, 32) (21, 28) adjacent to each of said support substrates as well as water flow channels (22) in at least one of said water transport plates. The thermal conductivity of the cathode and/or the anode gas dif- fusion layers is less than about one-quarter of the thermal conductivity of conventional gas diffusion layers, less than about 0.25 W/m/K, to promote flow of water from the cathodes to the anodes and to the adjacent water transport plates, during start-up at normal ambient temperatures (lower than normal PEM fuel cell operating temperatures).

摘要翻译： 一种具有不具有微孔层的气体扩散层的燃料电池发电厂的燃料电池，包括PEM（9），至少包含阴极催化剂（10）的阴极和在一侧的气体扩散层（17） 所述PEM和在所述PEM相反侧的至少包含阳极催化剂（11）和气体扩散层（14）的阳极和具有反应气体流场通道（31,32）（21,32）的多孔水输送板 ，28），以及至少一个所述水输送板中的水流通道（22）。 阴极和/或阳极气体扩散层的热导率小于常规气体扩散层的热传导率的约四分之一，小于约0.25W / m / K，以促进水从 在正常环境温度（低于正常的PEM燃料电池工作温度）的启动期间，阳极和相邻的水输送板的阴极。