Title:
A manufacturing method of a nonaqueous electrolyte rechargeable battery and the battery
Document Type and Number:
Japanese Patent JP5984014
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery capable of presenting a higher battery performance by forming stable coating over a surface of an anode active material (graphite material).SOLUTION: A nonaqueous electrolyte secondary battery (e.g., lithium ion secondary battery) is provided which comprises an electrode body including a cathode and an anode and a nonaqueous electrolyte. The anode includes an anode active material layer mainly comprised of a graphite material. The quantity of an acid functional group in the graphite material is 1 μeq/mor more, and coating containing sulfur (S) atoms and charge carriers is formed over a surface of the graphite material. In one preferable embodiment, the coating containing the sulfur atoms and the charge carriers is derived from a fluorine-containing sulfonic acid compound (e.g., FSOLi) contained in the nonaqueous electrolyte substantially as a sulfur coating formation agent.
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Inventors:
Toshihiko Mihashi
Application Number:
JP2012282333A
Publication Date:
September 06, 2016
Filing Date:
December 26, 2012
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M4/587; H01M4/36; H01M10/0525; H01M10/0567; H01M10/058
Domestic Patent References:
| JP2012109240A | ||||
| JP2008270086A | ||||
| JP2011076897A |
Foreign References:
| WO2005057715A1 |
Attorney, Agent or Firm:
Makoto Abe
Michiko Oi
Hiroaki Yamane
Michiko Oi
Hiroaki Yamane