公开(公告)号：US20150349362A1

公开(公告)日：2015-12-03

申请号：US14676686

申请日：2015-04-01

Applicant: Ballard Power Systems Inc.

Inventor： Sergei F. Burlatsky ,  Ned E. Cipollini ,  David A. Condit ,  Thomas H. Madden ,  Sathya Motupally ,  Lesia V. Protsailo ,  Timothy W. Patterson ,  Lei Chen ,  Mallika Gummalla

IPC: H01M8/04 ,  H01M8/10

CPC classification number: H01M8/04291 ,  H01M4/92 ,  H01M4/921 ,  H01M4/926 ,  H01M8/1004 ,  H01M8/1018 ,  H01M2008/1095 ,  H01M2250/10 ,  H01M2250/20 ,  H01M2300/0082 ,  Y02B90/14 ,  Y02E60/521 ,  Y02T90/32

Abstract: A membrane electrode assembly is provided which includes an anode; a cathode; a membrane between the anode and the cathode; and a protective layer between the membrane and at least one electrode of the anode and the cathode, the protective layer having a layer of ionomer material containing a catalyst, the layer having a porosity of between 0 and 10%, an ionomer content of between 50 and 80% vol., a catalyst content of between 10 and 50% vol., and an electrical connectivity between catalyst particles of between 35 and 75%. A configuration using a precipitation layer to prevent migration of catalyst ions is also provided.

Abstract translation: 提供一种膜电极组件，其包括阳极; 阴极 阳极和阴极之间的膜; 以及在所述膜和所述阳极和所述阴极的至少一个电极之间的保护层，所述保护层具有包含催化剂的离聚物材料层，所述层的孔隙率为0至10％，离聚物含量为50 和80体积％，催化剂含量为10至50体积％，催化剂颗粒之间的电连接率为35至75％。 还提供了使用沉淀层以防止催化剂离子迁移的构造。