Solid electrolyte film, solid oxide fuel cell comprising such a

Details Solid electrolyte film, solid oxide fuel cell comprising such a Solid electrolyte film, solid oxide fuel cell comprising such a

1990-12-06

1993-08-10

Bell, Mark L.

Coating processes

Spray coating utilizing flame or plasma heat

Metal oxide containing coating

4271263, 4273762, 296235, 429 33, B05D 100, H01M 810

Patent

active

052347222

ABSTRACT:
A solid electrolyte film being formed on a substrate by plasma spraying. The solid electrolyte film has a solid electrolyte structure composed of cerium oxide or zirconium oxide stabilized or partially stabilized with an alkaline earth metal element and/or a rare earth element. The solid electrolyte film has a true porosity of not more than 5%. A solid oxide fuel cell is also disclosed, which involves such a solid electrolyte film being formed on the substrate by plasma spraying, an air electrode provided on one side of the solid electrolyte films and a fuel electrode provided on the other side of the solid electrolyte film. The solid electrolyte film is formed on the substrate by densifying a plasma sprayed solid electrolyte raw film by heating the film in a temperature range of 1,300.degree. to 1,700.degree. C. In the cell, the fuel electrode film or the air electrode is formed onto a surface of the solid electrolyte film.

REFERENCES:
patent: 3481780 (1969-12-01), Mitoff
patent: 3525646 (1970-08-01), Tannenberger et al.
patent: 4490444 (1984-12-01), Isenberg
patent: 4614628 (1986-09-01), Hsu et al.
patent: 4725346 (1988-02-01), Joshi
patent: 5051321 (1991-09-01), Kitagawa et al.

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