Method of preparing a sintered lithium aluminate structure for c

Details Method of preparing a sintered lithium aluminate structure for c Method of preparing a sintered lithium aluminate structure for c

1979-12-27

1981-02-17

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

264 86, 264125, H01M 814, B28B 126

Patent

active

042516005

ABSTRACT:
A porous sintered tile is formed of lithium aluminate for retaining molten lectrolyte within a fuel cell. The tile is prepared by reacting lithium hydroxide in aqueous solution with alumina particles to form beta lithium aluminate particles. The slurry is evaporated to dryness and the solids dehydrated to form a beta lithium aluminate powder. The powder is compacted into the desired shape and sintered at a temperature in excess of 1200 K. but less than 1900 K. to form a porous integral structure that is subsequently filled with molten electrolyte. A tile of this type is intended for use in containing molten alkali metal carbonates as electolyte for use in a fuel cell having porous metal or metal oxide electrodes for burning a fuel gas such as hydrogen and/or carbon monoxide with an oxidant gas containing oxygen.

REFERENCES:
patent: 3845185 (1974-10-01), Kamigaito et al.
patent: 4115632 (1978-10-01), Kinoshita et al.

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