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:
Feb. 15, 2005
Filed:
Dec. 30, 2002
John A. S. Bett, Hamden, CT (US);
Ned E. Cipollini, Enfield, CT (US);
Thomas D. Jarvi, Manchester, CT (US);
Richard D. Breault, North Kingstown, RI (US);
John A. S. Bett, Hamden, CT (US);
Ned E. Cipollini, Enfield, CT (US);
Thomas D. Jarvi, Manchester, CT (US);
Richard D. Breault, North Kingstown, RI (US);
UTC Fuel Cells, LLC, South Windsor, CT (US);
Abstract
The invention is a fuel cell () having a corrosion resistant and protected cathode catalyst layer (). The cathode catalyst layer () includes a platinum oxygen reduction catalyst and an oxygen evolution catalyst selected from the group consisting of catalysts that are more active than platinum for oxygen evolution. The oxygen evolution catalyst may be uniformly applied within the cathode catalyst layer, or non-uniformly applied to identified high corrosion areas () () of the cathode catalyst layer (). The cathode catalyst layer () may include heat-treated carbon support material, and/or a heat-treated carbon black within a diffusion layer () supporting the cathode catalyst layer (). The fuel cell () may also include an anode catalyst layer () having a poor oxygen reduction catalyst having a greater oxygen reduction over potential than platinum.