Lithium ion secondary cell solvent

Details Lithium ion secondary cell solvent Lithium ion secondary cell solvent

1998-06-29

2000-03-21

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429345, 429188, 429305, H01M 604

Patent

active

060400919

ABSTRACT:
A thiophosphate flame retardant represented by (R.sub.1 S).sub.3 P.dbd.O, wherein R.sub.1 is aryl, alkaryl, or aralkyl, is added to a non-aqueous solvent to the extent of approximately 1/10-1/100 of a carbonate type solvent which is the main component of an electrolyte, to provide a lithium ion secondary cell solvent offering improved fire-retarding properties without much change of electrolyte composition. In this way, the boiling point can be raised and flame retarding properties can be conferred with almost no increase in the viscosity of the electrolyte.

REFERENCES:
patent: 3341624 (1967-09-01), Sherr et al.
patent: 5714277 (1998-02-01), Kawakami
patent: 5847188 (1998-12-01), Yokoyama

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