The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 2022
Filed:
Jul. 31, 2017
Applicant:
Ballard Power Systems Inc., Burnaby, CA;
Inventors:
Assignee:
BALLARD POWER SYSTEMS INC., Burnaby, CA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/86 (2006.01); H01M 4/90 (2006.01); H01M 8/10 (2016.01); H01M 8/1004 (2016.01); H01M 4/92 (2006.01);
U.S. Cl.
CPC ...
H01M 4/8652 (2013.01); H01M 4/8647 (2013.01); H01M 4/9016 (2013.01); H01M 4/9041 (2013.01); H01M 4/92 (2013.01); H01M 8/1004 (2013.01); H01M 2004/8684 (2013.01);
Abstract
A membrane electrode assembly comprises a polymer electrolyte interposed between an anode electrode and a cathode electrode, the anode electrode comprising an anode catalyst layer adjacent at least a portion of a first major surface of the polymer electrolyte, the cathode electrode comprising a cathode catalyst layer adjacent at least a portion of a second major surface of the polymer electrolyte; at least one of the anode and cathode catalyst layers comprising: a first catalyst composition comprising a noble metal; and a second composition comprising a metal oxide; wherein the second composition has been treated with a fluoro-phosphonic acid compound.