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. 25, 2013
Filed:
Nov. 23, 2005
Mahmoud H. Abd Elhamid, Grosse Pointe Woods, MI (US);
Gayatri Vyas, Rochester Hills, MI (US);
Youssef M. Mikhail, Sterling Heights, MI (US);
Thomas A. Trabold, Pittsford, NY (US);
Mahmoud H. Abd Elhamid, Grosse Pointe Woods, MI (US);
Gayatri Vyas, Rochester Hills, MI (US);
Youssef M. Mikhail, Sterling Heights, MI (US);
Thomas A. Trabold, Pittsford, NY (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A flow field plate or bipolar plate for a fuel cell that includes a carbide coating that makes the bipolar plate conductive, hydrophilic and stable in the fuel cell environment. Suitable carbides include, but are not limited to, chromium carbide, titanium carbide, tantalum carbide, niobium carbide and zirconium carbide. The carbide coating is then polished or textured by a suitable process, such as laser or chemical etching, to provide a surface morphology that makes the coating more hydrophilic, and further reduces the contact resistance on its surface.