Electrolyte composition for electrochemical cell

Chemistry: electrical current producing apparatus – product – and – Deferred action type – Responsive to heat

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H01M 636

Patent

active

041567587

ABSTRACT:
A high-temperature, secondary electrochemical cell that employs FeS as the positive electrode reactant and lithium or lithium alloy as the negative electrode reactant includes an improved electrolyte composition. The electrolyte comprises about 60-70 mole percent LiCl and 30-40 percent mole percent KCl which includes LiCl in excess of the eutectic composition. The use of this electrolyte suppresses formation of the J phase and thereby improves the utilization of positive electrode active material during cell cycling.

REFERENCES:
patent: 3898096 (1975-08-01), Heredy et al.
patent: 3941612 (1976-03-01), Steunenberg et al.
patent: 4011373 (1977-03-01), Kaun et al.

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