Perovskite-type oxide materials containing nickel and iron for a

Details Perovskite-type oxide materials containing nickel and iron for a Perovskite-type oxide materials containing nickel and iron for a

1998-12-07

2000-09-19

Weiner, Laura

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 30, 429 40, 423594, H01M 400

Patent

active

061209244

ABSTRACT:
A solid oxide fuel cell, which converts a chemical reaction between a fuel and air or oxygen into electric energy, and which is constructed by a solid electrolyte, an air electrode mounted adjacent to the solid electrolyte, a fuel electrode, and an inter-connector for connecting with other cell units is provided. The air electrode of the above fuel cell is made of a perovskite-type oxide material with a composition expressed by LnNi.sub.1-x Fe.sub.x O.sub.3 and YNi.sub.1-x Fe.sub.x O.sub.3 and wherein Ln represents lanthanide elements and x is in a range of 0.30 to 0.60. The perovskite-type oxide materials containing nickel and iron satisfy requirements to provide higher electronic conductivity than the conventional material and closer thermal expansion coefficient to that of the solid electrolyte than that of the conventional air electrode material.

REFERENCES:
patent: 5411767 (1995-05-01), Soma et al.

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