Metal working – Method of mechanical manufacture – Electrical device making
Patent
1977-03-11
1978-07-25
Larson, Lowell A.
Metal working
Method of mechanical manufacture
Electrical device making
429191, H01M 630
Patent
active
041020421
ABSTRACT:
A method for preparing a sodium/sulfur cell comprising (A) inserting a solid sodium slug, adapted to be connected to an external circuit, into the anodic reaction zone of a cell subassembly maintained within an inert atmosphere, said cell subassembly comprising a cell container and a tubular cation-permeable barrier disposed within said container such that a first reaction zone is located within cation-permeable barrier and a second reaction zone is located between the outer surface of said cation-permeable barrier and the inner surface of said container, one of said reaction zones being said anodic reaction zone and the other of said reaction zone being a cathodic reaction zone containing a precast composite cathodic reactant comprising a sulfur impregnated porous conductive material connected to said cation permeable barrier and adapted to be connected to said external circuit; and (B) providing closure means for said subassembly and sealing the same to said subassembly at a temperature less than about 100.degree. C. The method of the invention overcomes deficiencies of the prior art methods by allowing preparation of a sodium/sulfur cell without the use of molten reactants and the fill spouts which are required when the cell is filled with molten reactants.
REFERENCES:
patent: 3471330 (1969-10-01), Berger et al.
patent: 3765945 (1973-10-01), Sudworth
patent: 3939007 (1976-02-01), Sudworth
patent: 4037027 (1977-07-01), Desplanches et al.
Ford Motor Company
Larson Lowell A.
May Roger L.
Zerschling Keith L.
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