Mtu Motoren-Und Turbinen-Union Friedrichshafen Gmbh

Armin Prohaska

Bernd Rohland

Manfred Bischoff

Vojtech Plzak

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&deg; 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.

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Ehingen, Germany

Armin Prohaska