Title:
電解液及びリチウムイオン二次電池
Document Type and Number:
Japanese Patent JP5594241
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress deterioration due to redox decomposition of an electrolyte in a lithium ion secondary battery using a positive electrode active material composed of a lithium manganese-based oxide containing lithium (Li) element and a tetravalent manganese (Mn) element and having a crystal structure belonging to a layered rock-salt structure.SOLUTION: It is considered that an additive agent is oxidized before an organic solvent is oxidized on a positive electrode surface during an activation treatment and a high temperature storing by adding 2-pyrone-4,6-dicarboxylic acid in the electrolyte, and then storage capacity and recovery capacity are enhanced and increase of internal resistance is suppressed.
Inventors:
Kayo Mizuno
Wood Keiichi
Toshiki Inoue
Omori 修
Takayuki Hirose
Hirosuke Yamamoto
Kohei Mase
Wood Keiichi
Toshiki Inoue
Omori 修
Takayuki Hirose
Hirosuke Yamamoto
Kohei Mase
Application Number:
JP2011147237A
Publication Date:
September 24, 2014
Filing Date:
July 01, 2011
Export Citation:
Assignee:
TOYOTA INDUSTRIES CORP.
International Classes:
H01M10/0567; H01M4/48; H01M4/505; H01M10/052
Attorney, Agent or Firm:
Okawa 宏
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