A molten carbonate fuel cell as well as a method for...

H - Electricity – 01 – M

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H01M 4/88 (2006.01) H01M 4/86 (2006.01) H01M 4/90 (2006.01) H01M 8/14 (2006.01)

Patent

CA 2422585

The invention relates to a method for producing a melt carbonate fuel cell comprising a cathode layer made from porous nickel oxide, an anode layer made from porous nickel and a melt arranged between the cathode layer and the anode layer, received in the form of a finely porous electrolyte matrix melt consisting of one or more alkali metal carbonates as electrolytes. In order to produce the cathode layer, a sintered, coated electrode path, coated with catalytically activating particles, made of porous nickel in the fuel cell operation mode is reacted to form nickel oxide. According to the invention, the electrode path is coated with catalytic activating particles made from one or more non-oxidic inorganic metal compounds, which are reacted to form the corresponding metal oxides under gas development. The invention relates to another similar fuel cell with increased activation of the cathode reaction.

L'invention concerne un procédé pour produire une pile à combustible à carbonate fondu comportant une couche cathodique constituée d'oxyde de nickel poreux, une couche anodique constituée de nickel poreux, et une matière fondue intercalée entre la couche cathodique et la couche anodique, logée dans une matrice électrolytique microporeuse, dont l'électrolyte se présente sous la forme d'un ou plusieurs carbonates de métaux alcalins. La couche cathodique s'obtient par conversion d'une couche d'électrode constituée de nickel poreux, revêtue de particules à effet catalytique puis frittée, en oxyde de nickel, la réaction s'effectuant pendant fonctionnement de la pile à combustible. Selon l'invention, la couche d'électrode est recouverte de particules à effet catalytique constituée d'un ou plusieurs composés inorganiques qui ne sont pas du type oxyde et qui, lors du fonctionnement de la pile, sont convertis en oxydes métalliques correspondant, avec dégagement de gaz. L'invention concerne en outre une telle pile à combustible caractérisée par une activation accrue de la réaction cathodique.

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