Double-layer cathode for molten-carbonate fuel cells

Details Double-layer cathode for molten-carbonate fuel cells Double-layer cathode for molten-carbonate fuel cells

H - Electricity

01

M

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

Patent

CA 2204369

A double layer cathode is disclosed for a molten carbonate fuel cell with a cathode made of cathodic material and a matrix made of an electrolytic material, as well as a process for producing such a cathode. The cathode has two layers (1, 2) made of different cathodic materials. The first layer (1) that faces the matrix (3) is made of a porous, corrosion-resistant material and the second layer (2) opposite to the matrix (3) is made of a porous but good conductive material. This double layer cathode allows high power molten carbonate fuel cells with a substantially increased service life to be produced, as well as molten carbonate fuel cells working under an increased working pressure.

L'invention concerne une cathode à double couche pour cellules électrochimiques en carbonate fondu ayant une cathode en un matériau cathodique et une matrice en un matériau électrolytique, ainsi qu'un procédé de fabrication de cette cathode. La cathode comprend deux couches (1, 2) en matériaux cathodiques différents. La première couche (1) face à la matrice (3) est constituée d'un matériau poreux résistant à la corrosion et la deuxième couche (2) opposée à la matrice (3) est constituée d'un matériau poreux mais ayant une bonne conductivité. Cette cathode à double couche permet de produire des cellules électrochimiques en carbonate fondu de haute puissance et ayant une vie utile sensiblement prolongée, ainsi que des cellules électrochimiques en carbonate fondu fonctionnant sous une pression accrue de travail.

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