- Patent Title: Negative electrode for lithium ion secondary battery comprising negative electrode active material containing two carbons and method for manufacturing lithium ion secondary battery comprising same
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Application No.: US14759677Application Date: 2014-01-10
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Publication No.: US10211451B2Publication Date: 2019-02-19
- Inventor: Takeshi Azami , Hitoshi Ishikawa
- Applicant: NEC Corporation
- Applicant Address: JP Minato-ku, Tokyo
- Assignee: NEC CORPORATION
- Current Assignee: NEC CORPORATION
- Current Assignee Address: JP Minato-ku, Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2013-004100 20130111
- International Application: PCT/JP2014/050377 WO 20140110
- International Announcement: WO2014/109406 WO 20140717
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/58 ; H01M4/136 ; H01M10/0567 ; H01M4/04 ; H01M4/62 ; H01M4/133 ; H01M4/587 ; H01M10/0525 ; H01M10/058 ; H01M4/02
Abstract:
The present invention relates to a negative electrode for a lithium ion secondary battery, the negative electrode containing a negative electrode active material containing a first carbon and a second carbon, in which the first carbon is spherical graphite, the second carbon is massive graphite, and the sulfur concentration in the first carbon (Sx) and the sulfur concentration in the second carbon (Sy) are each independently 0 ppm or more and 300 ppm or less.
Public/Granted literature
- US20150349332A1 LITHIUM ION SECONDARY BATTERY Public/Granted day:2015-12-03
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