Method for increasing the electrical conductivity of a thermal sprayed interconnector for a solid electrolyte fuel cell
AssigneeNGK Insulators, Ltd.
InventorsShigenori Ito, Kiyoshi Okumura, Katsuki Yoshioka
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Abstract
A method for producing an airtight and thin lanthanum chromite film having a splendid electrical conductivity including providing an air electrode film on a porous ceramic substrate, thermally spraying a raw material for thermally spraying lanthanum chromite on a surface of the air electrode film to form a thermally sprayed film, and heat treating the thermally sprayed film to form an interconnector. The raw material for thermally spraying lanthanum chromite may contain a doping metal or metals, such as, copper, and zinc, etc. The heat treating is effected preferably at a temperature of at least 1,250.degree. C.
Claims5
A method for substantially increasing the electrical conductivity of a thermal sprayed interconnector for solid electrolyte fuel cells, comprising thermal spraying a raw material comprising lanthanum chromite on a surface of a fuel electrode or an air electrode of a solid electrolyte fuel cell to form a thermal sprayed film, and heat treating the thermal sprayed film at a temperature of at least 1250.degree. C. to form said interconnector.
Dependencies are inferred from the claim text.