公开(公告)号：US11239471B2

公开(公告)日：2022-02-01

申请号：US16336462

申请日：2017-09-29

Applicant: Ballard Power Systems Inc.

Inventor： Siyu Ye ,  Alexander Man-Chung Leung ,  Kyoung Bai ,  Dustin William H. Banham ,  Alan Young

IPC: H01M4/86 ,  H01M8/1004 ,  H01M4/88 ,  H01M4/90 ,  C08F214/26

Abstract: A membrane electrode assembly including: an anode electrode; a cathode electrode; and a polymer electrolyte membrane; wherein the cathode includes a first cathode catalyst sublayer including a first precious metal catalyst composition and a first ionomer composition including a first ionomer and a second ionomer; and a second cathode catalyst sublayer including a second precious metal catalyst composition and a second ionomer composition including a third ionomer; wherein the first ionomer is different from the second ionomer in at least one of chemical structure and equivalent weight.