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:
Jul. 16, 2002
Filed:
Feb. 23, 2000
Armin Prohaska, Ehingen, DE;
Manfred Bischoff, Feldkirchen, DE;
Bernd Rohland, Ulm, DE;
Vojtech Plzak, Plochingen, DE;
MTU Motoren-und Turbinen-Union Friedrichshafen GmbH, Friedrichshafen, DE;
Abstract
The invention relates to a double layer cathode for molten carbonate fuel cells, containing a first layer ( ) consisting of a first cathode material, preferably lithium-treated nickel oxide, and a second layer ( ) consisting of cerium-activated lithium cobaltite. The inventive double layer cathode is characterised in that the polarization resistance is less dependent on temperature and in that it has a longer life. The double layer cathode is especially suitable for operating a fuel cell at less than 650° C. The material for the second cathode layer ( ) is produced by activating cobalt oxide by co-precipitation with cerium and treating it with lithium carbonate to form a suspension. Said suspension is then applied to the first cathode layer ( ) as a second cathode ( ), dried and sintered at a high temperature.