Title:
リチウムイオン二次電池
Document Type and Number:
Japanese Patent JP5617792
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery which is difficult to deteriorate in charge/discharge capacity even after storage, the lithium ion secondary battery using a lithium manganese-based composite oxide exhibiting high capacity while needing activation treatment, as a positive electrode active material.SOLUTION: In the lithium ion secondary battery, SiOis used as a negative electrode active material, and at least one compound selected from the group consisting of a polycyclic hydrocarbon compound represented by the following general formula (1) (in the formula, R represents a mono- or poly-cyclic hydrocarbon group having 5 or more carbon atoms and including an alicyclic hydrocarbon group and/or an aromatic hydrocarbon group) and derivatives thereof is added in an electrolyte. Deterioration in charge/discharge capacity after storage can be suppressed by the cooperation of SiOand the additive.
Inventors:
水野 佳世
林 圭一
井上 敏樹
大森修
弘瀬 貴之
林 圭一
井上 敏樹
大森修
弘瀬 貴之
Application Number:
JP2011171481A
Publication Date:
November 05, 2014
Filing Date:
August 05, 2011
Export Citation:
Assignee:
株式会社豊田自動織機
International Classes:
H01M10/0567; H01M4/13; H01M4/48; H01M4/505; H01M10/052
Attorney, Agent or Firm:
Okawa 宏