Lithium secondary cell and its nonaqueous electrolyte

Details Lithium secondary cell and its nonaqueous electrolyte Lithium secondary cell and its nonaqueous electrolyte

2004-08-09

2010-08-24

Weiner, Laura S (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

C429S340000, C429S332000, C429S331000, C429S330000, C429S231100, C429S231800, C429S231400, C429S231300

Reexamination Certificate

active

07781106

ABSTRACT:
The invention provides a lithium secondary battery which is excellent in long-term cycle property and in battery characteristics, such as electric capacity and storage property, and a nonaqueous electrolytic solution usable for such a lithium secondary battery. The present invention relates to a lithium secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolytic solution containing an electrolyte salt dissolved in a nonaqueous solvent, characterized in that the positive electrode is made of a material including a lithium compound oxide, in that the negative electrode is made of a material including graphite, and in that the nonaqueous electrolytic solution contains dialkyl oxalate and further contains vinylene carbonate and/or 1,3-propanesultone, and a nonaqueous electrolytic solution for use in such a battery.

REFERENCES:
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patent: 2002-367674 (2002-12-01), None
patent: WO 2004/012295 (2004-02-01), None

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