Rechargeable electrochemical cell

Details Rechargeable electrochemical cell Rechargeable electrochemical cell

1979-08-13

1980-07-29

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429199, H01M 1040

Patent

active

042151880

ABSTRACT:
An electrolyte solution for use in rechargeable electrochemical cells having nickel substrate as working electrode and lithium counter electrode and an electrochemically active amount of LiAsF.sub.6 dissolved in dimethyl sulfite and a rechargeability improving amount of lithium carbonate, Li.sub.2 CO.sub.3, contained therein to form electrolyte solution, said solution being capable of passing through a molecular sieve of less than about 5 Angstroms has been developed. A preferred embodiment includes a one molar solution of the LiAsF.sub.6 and from about 0.07 to 0.14 molar solution of Li.sub.2 CO.sub.3. The electrolyte solution has 85-90 percent efficiency for cycling lithium on nickel substrate.

REFERENCES:
patent: 3423242 (1969-01-01), Meyers et al.
patent: 3877988 (1975-04-01), Dey et al.
patent: 3918988 (1975-11-01), Abens
patent: 4104451 (1978-08-01), Klemann et al.

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