Conductive ceramic composition and method of preparation

Details Conductive ceramic composition and method of preparation Conductive ceramic composition and method of preparation

1989-05-26

1991-04-16

Kalafut, Stephen J.

Chemistry: electrical current producing apparatus, product, and

Having earth feature

501134, 502101, 423598, 423599, 423641, 252518, 252519, 252520, H01M 488, H01M 490

Patent

active

050081632

ABSTRACT:
A ceramic anode composition is formed of a multivalent metal oxide or oxygenate such as an alkali metal, transition metal oxygenate. The anode is prepared as a non-stoichiometric crystalline structure by reaction and conditioning in a hydrogen gas cover containing minor proportions of carbon dioxide and water vapor. The structure exhibits a single phase and substantially enhanced electrical conductivity over that of the corresponding stoichiometric structure. Unexpectedly, such oxides and oxygenates are found to be stable in the reducing anode fuel gas of a molten carbonate fuel cell.

REFERENCES:
patent: 3507701 (1970-04-01), Broyde
patent: 4026811 (1977-05-01), Readey et al.
patent: 4132619 (1979-01-01), Klein et al.
patent: 4525768 (1985-06-01), Wheeler
patent: 4567031 (1986-01-01), Riley
patent: 4670815 (1987-06-01), Alexander et al.

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