Non-aqueous electrolyte secondary battery

Details Non-aqueous electrolyte secondary battery Non-aqueous electrolyte secondary battery

2008-05-27

2008-05-27

Weiner, Laura (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S330000, C429S337000, C429S329000, C429S231300, C429S218100

Reexamination Certificate

active

07378190

ABSTRACT:
Storage performance in a charged state is improved with a non-aqueous electrolyte secondary battery using gamma-butyrolactone as a solvent. A non-aqueous electrolyte secondary battery includes a positive electrode (2) containing a positive electrode active material including a lithium-containing transition metal oxide; a negative electrode (1) containing a negative electrode active material capable of intercalating and deintercalating lithium; and a non-aqueous electrolyte including a solute and a solvent; wherein the solvent contains 50 volume % or more of gamma-butyrolactone with respect to the total volume of the solvent, and the positive electrode active material contains a phosphate salt M1PO4, where M1is a metal element capable of having a valency of 3.

REFERENCES:
patent: 6150053 (2000-11-01), Murata et al.
patent: 7135251 (2006-11-01), Cho et al.
patent: 2003/0082448 (2003-05-01), Cho et al.
patent: 04-014769 (1992-01-01), None
patent: 11-191417 (1999-07-01), None
patent: 2003-7299 (2003-01-01), None

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