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:
Dec. 09, 2014
Filed:
May. 14, 2009
Mahmoud H. Abd Elhamid, Grosse Pointe Woods, MI (US);
Gayatri Vyas Dadheech, Rochester Hills, MI (US);
Arianna T. Morales, Royal Oak, MI (US);
Maria C. Militello, Macomb, MI (US);
Mahmoud H. Abd Elhamid, Grosse Pointe Woods, MI (US);
Gayatri Vyas Dadheech, Rochester Hills, MI (US);
Arianna T. Morales, Royal Oak, MI (US);
Maria C. Militello, Macomb, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A bipolar plate to reduce electrical contact resistance between the plate and a diffusion layer used in a fuel cell. The opposing surfaces of the plate define flow channels with upstanding lands interspersed between them. The lands of the plate form an electrically-conductive contact with a diffusion layer in the fuel cell. At least a portion of the electrically-conductive contact is made up of a nickel-based alloy that reduces the contact resistance between the plate and the diffusion layer as a way to achieve improved electric current density. In one form, the alloy can be used as the primary material in the plate, while in another, it can be used as a coating deposited onto a conventional stainless steel plate.