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