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:
Sep. 27, 2011
Filed:
Mar. 03, 2010
Mei Cai, Bloomfield Hills, MI (US);
Yunfeng LU, Los Angeles, CA (US);
Zhiwang Wu, New Orleans, LA (US);
Lee Lizhong Feng, Troy, MI (US);
Martin S. Ruthkosky, Sterling Heights, MI (US);
John T. Johnson, Sterling Heights, MI (US);
Frederick T. Wagner, Fairport, NY (US);
Mei Cai, Bloomfield Hills, MI (US);
Yunfeng Lu, Los Angeles, CA (US);
Zhiwang Wu, New Orleans, LA (US);
Lee Lizhong Feng, Troy, MI (US);
Martin S. Ruthkosky, Sterling Heights, MI (US);
John T. Johnson, Sterling Heights, MI (US);
Frederick T. Wagner, Fairport, NY (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Administrators of the Tulane Educational Fund, New Orleans, LA (US);
Abstract
Titanium oxide (usually titanium dioxide) catalyst support particles are doped for electronic conductivity and formed with surface area-enhancing pores for use, for example, in electro-catalyzed electrodes on proton exchange membrane electrodes in hydrogen/oxygen fuel cells. Suitable compounds of titanium and a dopant are dispersed with pore-forming particles in a liquid medium. The compounds are deposited as a precipitate or sol on the pore-forming particles and heated to transform the deposit into crystals of dopant-containing titanium dioxide. If the heating has not decomposed the pore-forming particles, they are chemically removed from the, now pore-enhanced, the titanium dioxide particles.