Invention Grant
- Patent Title: Lithium ion secondary battery
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Application No.: US15021669Application Date: 2014-08-28
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Publication No.: US09991561B2Publication Date: 2018-06-05
- Inventor: Takeshi Azami , Hitoshi Ishikawa , Noboru Yoshida , Ikiko Shimanuki , Kazuaki Matsumoto , Makihiro Otohata
- Applicant: NEC Corporation
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- Priority: JP2013-189543 20130912; JP2014-121472 20140612
- International Application: PCT/JP2014/072588 WO 20140828
- International Announcement: WO2015/037451 WO 20150319
- Main IPC: H01M10/0567
- IPC: H01M10/0567 ; H01M10/0525 ; H01M4/133 ; H01M4/587 ; H01M4/36 ; H01M2/16 ; H01M4/131 ; H01M4/505 ; H01M4/62 ; H01M4/66 ; H01M10/0568 ; H01M10/0569 ; H01M4/02

Abstract:
The present invention provides a lithium ion secondary battery comprising: a positive electrode; a negative electrode comprising a negative electrode active material comprising at least one carbon material selected from the group consisting of a natural graphite, an artificial graphite, a non-graphitizable carbon and a graphitizable carbon; and an electrolyte solution comprising a specific cyclic disulfonate ester compound and an acid anhydride.
Public/Granted literature
- US20160226099A1 LITHIUM ION SECONDARY BATTERY Public/Granted day:2016-08-04
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