Nonaqueous electrolyte

Details Nonaqueous electrolyte Nonaqueous electrolyte

2001-10-19

2008-09-09

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

C429S326000, C429S330000, C429S340000

Reexamination Certificate

active

07422827

ABSTRACT:
Disclosed is a nonaqueous electrolyte for a lithium-ion secondary battery that contains an addictive for preventing destruction of a solid electrolyte interface (SEI) layer and hence decomposition of the electrolyte that may cause generation of a gas, thereby preventing swelling of the battery caused by the gas generated from the inside of the battery at a high temperature. More specifically, the present invention provides an electrolyte that includes, as an additive, 2-sulfobenzoic acid cyclic anhydride represented by the formula 1: The electrolyte contains the additive in an amount of 0.1 to 10.0 wt. %.

REFERENCES:
patent: 5472809 (1995-12-01), Perton et al.
patent: 10-275614 (1998-10-01), None
patent: 10-289731 (1998-10-01), None
patent: 12-003725 (2000-01-01), None
patent: 12-082492 (2000-03-01), None
patent: 2000-082492 (2000-03-01), None
patent: 12-164251 (2000-06-01), None
patent: 12-285961 (2000-10-01), None
patent: 12-294278 (2000-10-01), None
patent: 13-160417 (2001-06-01), None

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