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. 07, 2011
Filed:
Jan. 22, 2004
Susan G. Yan, Fairport, NY (US);
John C. Doyle, Bergen, NY (US);
Susan G. Yan, Fairport, NY (US);
John C. Doyle, Bergen, NY (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A technique for fabricating an MEA. The technique includes providing a polymer electrolyte proton conducting membrane, and then spraying a catalyst ink directly on the membrane to form a catalyst layer. In one embodiment, the catalyst ink includes the proper ionomer to carbon ratio, such as 0.8/1, for the desired fuel cell performance. In another embodiment, the catalyst ink includes too little ionomer for the proper ionomer to carbon ratio for the desired fuel cell performance. An ionomer layer is sprayed on the membrane before the catalyst layer to provide the proper final ionomer to carbon ratio.