Electrochemical cell

Details Electrochemical cell Electrochemical cell

1985-09-23

1986-12-02

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Process of cell operation

429103, 429223, H01M 452, H01M 1039

Patent

active

046264833

ABSTRACT:
The invention provides a cathode for an electrochemical cell, an electrochemical cell including the cathode, and a method of resisting a progressive drop in the capacity of the cathode with repeated charge/discharge cycling thereof. The invention involves doping the electrolyte, which is a sodium aluminium halide molten salt electrolyte containing chloride ions, and/or the active cathode substance, which is a nickel containing substance with a minor proportion of a chalcogen so that the chalcogen is dispersed therein.

REFERENCES:
patent: 3877984 (1975-04-01), Werth
patent: 3988163 (1976-10-01), Sklarchuk
patent: 4063005 (1977-12-01), Mamantou et al.
patent: 4452777 (1984-06-01), Abraham et al.
patent: 4457989 (1984-07-01), Coetzer
patent: 4546055 (1985-10-01), Coetzer et al.
Marassi et al., Electrooxidation of Sulfer in Molten AlCl.sub.3 NaCl (63-37 Mole Percent), 1979, J. Electrochem. Soc., vol. 126, No. 2, pp. 231-237.
Abraham et al., Moderate Temperature Sodium Cells--V. Discharge Reactions and Rechargability of NiS NiS.sub.2 Positive Electrodes In Molten Sodium Aluminum Chloride, Oct. 1984, J. Electrochem. Soc., pp. 2211-2217.

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