Mtu Motoren-und Turbinen-union Friedrichshafen Gmbh

Fuelcell Energy, Inc.

Mtu Cfc Solutions Gmbh

Manfred Bischoff

Bernd Rohland

Mohammad Farooque

George P Berntsen

Uwe Jantsch

Hartmut Wendt

Glenn L Carlson

Vojtech Plzak

Ramki Venkataraman

Armin Prohaska

Hans-Juergen Salge

Dan Beachy

Stefan Peterhans

A fuel cell system and method in which the fuel cell system receives and an input oxidant gas and an input fuel gas, and in which a fuel processing assembly is provided and is adapted to at least humidify the input fuel gas which is to be supplied to the anode of the fuel cell of the system whose cathode receives the oxidant input gas via an anode oxidizing assembly which is adapted to couple the output of the anode of the fuel cell to the inlet of the cathode of the fuel cell during normal operation, shutdown and restart of the fuel cell system, and in which a control assembly is further provided and is adapted to respond to shutdown of the fuel cell system during which input fuel gas and input oxidant gas cease to be received by the fuel cell system, the control assembly being further adapted to, when the fuel cell system is shut down: control the fuel cell system so as to enable a purging gas to be able to flow through the fuel processing assembly to remove humidified fuel gas from the processing assembly and to enable a purging gas to be able to flow through the anode of the fuel cell.

Control assembly for controlling a fuel cell system during shutdown and restart

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.

Double layer cathode for molten carbonate fuel cells and method for producing the same

The invention concerns a process for the production of a porous lithium cobaltite electrode plate with a large inner surface and low polarization resistance. Lithium carbonate powder and cobalt metal powder are uniformly mixed together and then films are produced from the mixture and plates from the films, which plates are sintered and then placed in an air stream for several hours at a temperature between 400&deg; C. and 488&deg; C. until the conversion of said plates to lithium cobaltite electrode plates with an extremely large inner surface has taken place.

Process for the production of an electrode for a fused carbonate fuel cell

Cathode for a molten carbonate fuel cell and method for manufacturing

Growing community of inventors

Feldkirchen, Germany

Manfred Bischoff