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. 02, 1993
Filed:
Jan. 17, 1991
Applicant:
Inventor:
Harold R Kunz, Vernon, CT (US);
Assignee:
International Fuel Cells Corporation, South Windsor, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429 44 ; 502185 ; 502339 ;
Abstract
Carbon monoxide poisoning of anode catalysts in phosphoric acid fuel cells reduces the cell performance. The carbon monoxide absorbs onto the catalyst, blocking hydrogen oxidation sites. A carbon monoxide tolerant platinum-tantalum alloyed catalyst includes between about 2 wt % and about 50 wt % platinum, between about 2 atom % and 10 atom % tantalum deposited on a support. This catalyst is particularly useful in fuel cell system applications where the fuel stream may contain carbon monoxide.