Rechargeable zinc cell with alkaline electrolyte which inhibits

Details Rechargeable zinc cell with alkaline electrolyte which inhibits Rechargeable zinc cell with alkaline electrolyte which inhibits

1991-11-12

1994-04-12

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429188, 429223, 429229, H01M 1034

Patent

active

053024753

ABSTRACT:
An improved rechargeable zinc cell is described comprising a zinc electrode and another electrode such as, for example, a nickel-containing electrode, and having an electrolyte containing KOH and a combination of KF and K.sub.2 CO.sub.3 salts which inhibits shape change in the zinc electrode, i.e., the zinc electrode exhibits low shape change, resulting in an improved capacity retention of the cell over an number of charge-discharge cycles, while still maintaining high discharge rate characteristics.

REFERENCES:
patent: 3485673 (1969-12-01), Jost
patent: 4247610 (1981-01-01), Thornton
McLarnon, Frank R., et al., "The Secondary Alkaline Zinc Electrode", J. Electrochem. Soc., vol. 138, No. 2, Feb., 1991, pp. 645-664.
Nichols, James T., et al., "Zinc Electrode Cycle-Life Performance in Alkaline Electrolytes Having Reduced Zinc Species Solubility", Chem. Eng. Commun., vol. 37, pp. 355-379, 1984.

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