Dicarbonate additives for nonaqueous electrolyte in alkali metal

Details Dicarbonate additives for nonaqueous electrolyte in alkali metal Dicarbonate additives for nonaqueous electrolyte in alkali metal

1998-04-16

2000-05-16

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

4292319, 42923195, 429325, 429328, 429329, 429330, 429332, 429333, 429334, 429335, H01M 616

Patent

active

060635266

ABSTRACT:
An alkali metal, solid cathode, nonaqueous electrochemical cell capable of delivering high current pulses, rapidly recovering its open circuit voltage and having high current capacity, is described. The stated benefits are realized by the addition of at least one dicarbonate additive to an electrolyte comprising an alkali metal salt dissolved in a mixture of a low viscosity solvent and a high permittivity solvent. A preferred solvent mixture includes propylene carbonate, dimethoxyethane and an alkyl dicarbonate additive.

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