Title:
LITHIUM ION SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2017016944
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery which has high capacity and exhibits excellent charge/discharge cycle characteristics.SOLUTION: In the lithium ion secondary battery, a negative electrode active material contains a material S containing SiO(the atomic ratio x of O to Si is 0.5≤x≤1.5), a nonaqueous electrolyte contains a compound represented by formula (1), and a positive electrode active material is an oxide comprising Li and a metal M. When the lithium ion secondary battery is discharged to 2.0 V at 0.1 C, the molar ratio of Li to the metal M in the positive electrode active material is 0.9-1.05. (In the formula (1), 1800
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Inventors:
ABE TOSHIHIRO
ABE HIROSHI
ABE HIROSHI
Application Number:
JP2015134305A
Publication Date:
January 19, 2017
Filing Date:
July 03, 2015
Export Citation:
Assignee:
HITACHI MAXELL
International Classes:
H01M10/0525; H01M2/02; H01M2/16; H01M4/36; H01M4/48; H01M4/587; H01M4/70; H01M10/0567; H01M10/0585
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