Monolithic fuel cell having improved interconnect layer

Details Monolithic fuel cell having improved interconnect layer Monolithic fuel cell having improved interconnect layer

1993-03-26

1994-10-18

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 33, H01M 812

Patent

active

053567307

ABSTRACT:
A fuel cell comprises an anode, a cathode, a solid electrolyte disposed between the anode and the cathode, and interconnect means for providing an electrical connection located adjacent to either the cathode or the anode but not adjacent to the solid electrolyte. The interconnect means includes an interconnect layer having a composition of (i) a mixture of an electrical conductor and a ceramic matrix material that is sinterable in an oxidizing atmosphere at a temperature of less than about 1500.degree. C., (ii) a mixture of a lanthanum chromite-based ceramic and a yttrium chromite-based ceramic, or (iii) a yttrium chromite-based ceramic of the form Y.sub.w-x-y Ca.sub.x Zr.sub.y Cr.sub.v-z Zn.sub.z O.sub.3 , where w is from about 0.9 to about 1.1, x is from about 0.1 to about 0.3, y is from about 0.001 to about 0.1, z is from about 0.1 to about 0.3, and v is from about 1 to about 1.2.

REFERENCES:
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patent: 4895576 (1990-01-01), Pal et al.
patent: 4913982 (1990-04-01), Kotchick et al.
patent: 5143801 (1992-09-01), Bates

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