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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.:

US 9865884 B1

PDFFull Text
Date of Patent:
Jan. 09, 2018

Filed:

Jun. 10, 2015

Roll-to-roll fabrication of high performance fuel cell electrode with core-shell catalyst using seeded electrodes

Applicant:

GM Global Technology Operations Llc, Detroit, MI (US);

Inventors:

Anusorn Kongkanand, Rochester Hills, MI (US);

Yun Cai, Rochester Hills, MI (US);

Assignee:

GM Global Technology Operations LLC, Detroit, MI (US);

Attorney:

Brooks Kushman P.C.

Primary Examiner:

Brian W Cohen

Int. Cl.
CPC ...
B05D 1/18 (2006.01); C23C 18/16 (2006.01); C23C 18/42 (2006.01); C25D 5/48 (2006.01); C25D 15/02 (2006.01); H01M 4/88 (2006.01); C25D 3/56 (2006.01); C23C 18/54 (2006.01); C23C 18/44 (2006.01); C23C 18/18 (2006.01); B05D 1/36 (2006.01); B05D 5/00 (2006.01); H01M 4/86 (2006.01); H01M 4/90 (2006.01); H01M 4/92 (2006.01); H01M 4/96 (2006.01);
U.S. Cl.
CPC ...
H01M 4/8853 (2013.01); B05D 1/36 (2013.01); B05D 5/00 (2013.01); C23C 18/1848 (2013.01); C23C 18/44 (2013.01); C23C 18/54 (2013.01); C25D 3/562 (2013.01); C25D 5/48 (2013.01); C25D 15/02 (2013.01); H01M 4/8657 (2013.01); H01M 4/8807 (2013.01); H01M 4/9041 (2013.01); H01M 4/926 (2013.01); H01M 4/928 (2013.01); H01M 4/96 (2013.01);
Abstract

A method for forming a fuel cell catalyst includes a step of forming an ionomer-containing layer including carbon particles and an ionomer. Tungsten-nickel alloy particles are formed on the carbon particles. At least a portion of the nickel in the tungsten-nickel alloy particles is replaced with palladium to form palladium-coated particles. The palladium-coated particles include a palladium shell covering the tungsten-nickel alloy particles. The palladium-coated particles are coated with platinum to form an electrode layer including core shell catalysts distributed therein.

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