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. 28, 2011
Filed:
Oct. 20, 2003
Gayatri Vyas, Rochester Hills, MI (US);
Hubert a Gasteiger, Rochester, NY (US);
Youssef Mikhail, Sterling Heights, MI (US);
Ilona Busenbender, Rheinbreitbach, DE;
Gayatri Vyas, Rochester Hills, MI (US);
Hubert A Gasteiger, Rochester, NY (US);
Youssef Mikhail, Sterling Heights, MI (US);
Ilona Busenbender, Rheinbreitbach, DE;
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
In one aspect a substrate such as a sheet metal product, in particular for use as a bipolar plate in a fuel cell or in an electrolyzer, is characterized in that it has, on at least one side, a conductive and corrosion-resistant protective coating of a metal oxide having a treatment which ensures the conductivity. The coating can be produced by introducing a piece of sheet metal into a coating plant and providing it with the conductive and corrosion-resistant protective coating of the metal oxide. In another aspect, an electrochemical cell such as a fuel cell comprises an electrically conductive contact element having a first surface facing an electrode for conducting electrical current, and the contact element comprises an electrically conductive substrate and an electrically conductive coating comprising a doped metal oxide, desirably a doped tin oxide, and preferably a fluorine doped tin oxide.