Ballard Power Systems Inc.
Cathode electrode design for electrochemical fuel cells
Last updated:
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.
Status:
Grant
Type:
Utility
Filling date:
29 Sep 2017
Issue date:
1 Feb 2022