Method of making tetrachloroaluminate + sulfur dioxide electroly

Details Method of making tetrachloroaluminate + sulfur dioxide electroly Method of making tetrachloroaluminate + sulfur dioxide electroly

1991-08-29

1992-09-08

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429197, H01M 614

Patent

active

051457555

ABSTRACT:
Method for making electrolytes for Li/metal tetrachoroaluminate.nSO.sub.2 /carbon rechargeable cells containing calcium or sodium tetrachloroaluminate, by treating the metal tetrachloroaluminate salt mixture with sulfuryl chloride to purify it of hydrolysis products, removing the sulfuryl chloride, and dissolving the mixture in sulfur dioxide.

REFERENCES:
patent: 3493433 (1970-02-01), Hoffmann
patent: 3998660 (1976-12-01), Lieberman
patent: 4375502 (1983-03-01), Gaband
patent: 4513067 (1985-04-01), Kuo et al.
patent: 4891281 (1990-01-01), Kuo et al.
patent: 4925753 (1990-05-01), Schlaikjer
patent: 4988585 (1991-01-01), O'Hara et al.
Dey, A. N. et al., "Inorganic Electrolyte Rechargeable Li/SO.sub.2 System", ower Sources Sym., Cherry Hill, N.J., proceedings, Electrochemical Society, May 1986, pp. 176-184.
Kuo et al., "Rechargeable Li/SO.sub.2 System with Inorganic Electrolyte", Proc. Sympos. Lithium Batteries Electrochemical Society, 1986, pp. 414-437.

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