Thermoelectric generator

Details Thermoelectric generator Thermoelectric generator

1975-09-17

1977-09-20

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current production dependent upon temperature differential...

429101, 429104, 429112, 429218, 429221, 429223, 427252, H01M 636

Patent

active

040498778

ABSTRACT:
An improved thermoelectric generator of the type having (1) enclosure means for a first reaction zone; (2) enclosure means for a second reaction zone; (3) a reaction zone separator which (a) separates and essentially completes enclosure of the two reaction zones and (b) comprises a cationically-conductive, solid electrolyte that is essentially impermeable to elemental alkali metal and compounds thereof and ionically conductive with respect to cations of the alkali metal; (4) alkali metal within the first reaction zone and in fluid communication with the solid electrolyte; (5) an electrode within the second reaction zone in electrical contact with the solid electrolyte and sufficiently porous to permit alkali metal vapor to pass therethrough; (6) conduction means for electron flow between the alkali metal within the first reaction zone and the electrode; (7) inlet means for introducing the alkali metal into the first reaction zone; and (8) temperature control means adapted to maintain a temperature in the first reaction zone at least 100.degree. C in excess of the lowest temperature in the second reaction zone. The improvement of the invention comprises employing as the electrode a porous film of a metal which has a melting point above about 1000.degree. C and which is chemically inert to sodium, the film having been deposited on said reaction zone separator by chemical vapor deposition.

REFERENCES:
patent: 3458356 (1969-07-01), Kummer et al.
patent: 3533848 (1970-10-01), Winn
patent: 3535163 (1970-10-01), Dzieciuch et al.
Weber, N., "A Thermoelectric Device Based on Beta-Alumina Solid Electrolyte"; Energy Conversion, vol. 14, No. 1, 1974.

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