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:
May. 13, 2014
Filed:
Sep. 30, 2010
Stephen A. Campbell, Maple Ridge, CA;
Natalia Kremliakova, Burnaby, CA;
Stephen A. Campbell, Maple Ridge, CA;
Natalia Kremliakova, Burnaby, CA;
Daimler AG, Stuttgart, DE;
Ford Motor Company, Dearborn, MI (US);
Abstract
Provided is a catalyst composition comprising an intermetallic phase comprising Pt and a metal selected from either Nb or Ta, and a dioxide of the metal. Also provided is a low temperature method for making such compositions that results in the formation of intermetallic phase with small crystallite size and thus greater mass activity. In particular, a PtNb—NbOcatalyst composition can be prepared that is useful as a fuel cell catalyst and offers a very stable chemical substrate along with good electrode activity and remarkable durability. The use of PtNb—NbOcan considerably prolong fuel cell lifetime by reducing Pt dissolution levels and subsequent voltage losses. The PtNb—NbOcan be used in the cathode and/or anode of a fuel cell.