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:
May. 11, 2021
Filed:
Sep. 29, 2017
Applicant:
Nisshinbo Holdings Inc., Tokyo, JP;
Inventors:
Dustin William H Banham, West Vancouver, CA;
Siyu Ye, Burnaby, CA;
Takeaki Kishimoto, Midori-ku, JP;
Kyoung Bai, Vancouver, CA;
Assignee:
NISSHINBO HOLDINGS INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/86 (2006.01); H01M 8/1004 (2016.01); H01M 4/90 (2006.01); H01M 8/04291 (2016.01); H01M 8/1018 (2016.01);
U.S. Cl.
CPC ...
H01M 4/8657 (2013.01); H01M 4/8642 (2013.01); H01M 4/8663 (2013.01); H01M 4/9041 (2013.01); H01M 8/04291 (2013.01); H01M 8/1004 (2013.01); H01M 2004/8689 (2013.01); H01M 2008/1095 (2013.01);
Abstract
A method for improving the performance and/or stability of non-precious metal catalysts in fuel cells and other electrochemical devices. Improved membrane electrode assemblies (MEAs) and fuel cells containing the same are provided. Such MEAs include a catalyst layer made up of at least two sub-layers containing ionomers of differing equivalent weights. The sub-layers may optionally contain mixtures of ionomers. Also provided are methods of making and using the described devices.