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:
Jul. 14, 2015
Filed:
Sep. 22, 2005
Catherine Helen DE Rouffignac, Oxford, GB;
Hubert Gasteiger, Rochester, NY (US);
Adam John Hodgkinson, Swindon, GB;
Peter Anthony Trew, Wiltshire, GB;
Bhaskar Sompalli, Rochester, NY (US);
Susan Yan, Fairport, NY (US);
Brian Litteer, Henrietta, NY (US);
Catherine Helen de Rouffignac, Oxford, GB;
Hubert Gasteiger, Rochester, NY (US);
Adam John Hodgkinson, Swindon, GB;
Peter Anthony Trew, Wiltshire, GB;
Bhaskar Sompalli, Rochester, NY (US);
Susan Yan, Fairport, NY (US);
Brian Litteer, Henrietta, NY (US);
JOHNSON MATTHEY FUEL CELLS LIMITED, London, GB;
GENERAL MOTORS CORPORATION, Detroit, MI (US);
Abstract
A membrane electrode assembly comprises an ion-conducting membrane; a first electrocatalyst layer having a surface facing the membrane; a first electronically-conducting porous gas diffusion substrate facing the other surface of the first electrocatalyst layer; and a first film member interposed between the membrane and the first electrocatalyst layer. The first electrocatalyst layer has an edge region and a central region, and the first film member contacts the edge region and not the central region. A first adhesive layer is present on the surface of the first film member facing the first electrocatalyst layer, and the first adhesive layer adheres the first film member to the first electrocatalyst layer, impregnates through the first electrocatalyst layer, and impregnates into the first gas diffusion substrate.