公开(公告)号：US20120003560A1

公开(公告)日：2012-01-05

申请号：US13256290

申请日：2009-03-18

申请人： Jeremy P. Meyers ,  Michael L. Perry ,  Carl A. Reiser ,  Ned E. Cipollini ,  Wayde R. Schmidt ,  Gopal R. Krishnan ,  John A. Trela ,  Robert M. Darling

发明人： Jeremy P. Meyers ,  Michael L. Perry ,  Carl A. Reiser ,  Ned E. Cipollini ,  Wayde R. Schmidt ,  Gopal R. Krishnan ,  John A. Trela ,  Robert M. Darling

IPC分类号： H01M8/04 ,  H01M2/08

CPC分类号： H01M8/023 ,  H01M8/04276

摘要： A fuel cell includes an electrode assembly having an electrolyte between a cathode catalyst and an anode catalyst, and a flow field plate having a channel for delivering a reactant gas to the electrode assembly. The flow field plate includes a channel having a channel inlet. A porous diffusion layer is located between the electrode assembly and the flow field plate. The porous diffusion layer includes a first region near the channel inlet and a second region downstream from the first region relative to the channel inlet. The first region includes a filler material that partially blocks pores of the first region such that the first region has a first porosity and the second region has a second porosity that is greater than the first porosity.

摘要翻译： 燃料电池包括在阴极催化剂和阳极催化剂之间具有电解质的电极组件和具有用于将反应气体输送到电极组件的通道的流场板。 流场板包括具有通道入口的通道。 多孔扩散层位于电极组件和流场板之间。 多孔扩散层包括在通道入口附近的第一区域和相对于通道入口从第一区域下游的第二区域。 第一区域包括填充材料，其部分地阻挡第一区域的孔，使得第一区域具有第一孔隙度，并且第二区域具有大于第一孔隙率的第二孔隙率。