Solid oxide fuel cell having perovskite solid electrolytes

Details Solid oxide fuel cell having perovskite solid electrolytes Solid oxide fuel cell having perovskite solid electrolytes

2005-02-01

2005-02-01

Tsang-Foster, Susy (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000

Reexamination Certificate

active

06849354

ABSTRACT:
A solid oxide fuel cell (SOFC) contains a first solid electrolyte layer of LaGa-based perovskite, an air electrode, a fuel electrode and a second solid electrolyte layer (having a hole transport number smaller than that of the first solid electrolyte layer), which is provided between the first solid electrolyte layer and an air electrode. Also, another SOFC contains a first solid electrolyte layer of LaGa-based perovskite, an air electrode, a fuel electrode and a third solid electrolyte layer (having electron and proton conductivity lower than that of the first solid electrolyte layer), which is provided between the first solid electrolyte layer and the fuel electrode. Still another SOFC contains the second solid electrolyte layer provided between a first solid electrolyte layer and an air electrode and the third solid electrolyte layer provided between the first solid electrolyte layer and a fuel electrode.

REFERENCES:
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Tatsumi Ishihara et al., “Doped LaGaO3Perovskite Type Oxide as a new Oxide Ionic Conductor”, J. Am. Chem. Soc. 1994, vol. 116, No. 9, pp. 3801-3803, (no month available).
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Huang et al., “Superior Perovskite Oxide-Ion Conductor: Strontium-and Magnesium-Doped LaGaO3: II, Performance Test of Single Ceramic Fuel Cells”,Journal of the American Ceramic Society, vol. 81, No. 10 (1998) (No Month) pp. 2581-2585.
Yasuda et al., “Status of Research and Development of Planar SOFC at Tokyo Gas”, The 8th Symposium on Solid Oxide Fuel Cells in Japan Extended Abstracts p. 7-10 (1999) Dec.

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