Invention Grant
- Patent Title: Negative electrode including platy graphite conductive additive for lithium ion battery, and lithium ion battery using the same
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Application No.: US14118338Application Date: 2012-05-15
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Publication No.: US09620784B2Publication Date: 2017-04-11
- Inventor: Takeshi Azami
- Applicant: Takeshi Azami
- Applicant Address: JP Sagamihara-shi, Kanagawa
- Assignee: NEC ENERGY DEVICES, LTD.
- Current Assignee: NEC ENERGY DEVICES, LTD.
- Current Assignee Address: JP Sagamihara-shi, Kanagawa
- Agency: Sughrue Mion, PLLC
- Priority: JP2011-155736 20110714
- International Application: PCT/JP2012/062362 WO 20120515
- International Announcement: WO2013/008524 WO 20130117
- Main IPC: H01M4/133
- IPC: H01M4/133 ; H01M4/587 ; H01M4/62 ; H01M10/0525 ; H01M4/02

Abstract:
The purpose of the present invention is to provide a lithium-ion battery that exhibits excellent long-term life properties, does not suffer from rapid capacity degradation, and exhibits excellent charging/discharging characteristics in low-temperature environments. The present invention is directed to a negative electrode for a lithium ion battery, which comprises a negative electrode active material containing a graphite or an amorphous carbon, conductive additives containing a graphite, and a binder; and a lithium ion battery comprising this negative electrode. The negative electrode is characterized in that the negative electrode active material has a spherical or massive shape; the conductive additives have a platy shape; and part of an edge surface of the conductive additives contacts a surface of the negative electrode active material.
Public/Granted literature
- US20140227601A1 NEGATIVE ELECTRODE FOR LITHIUM ION BATTERY, AND LITHIUM ION BATTERY Public/Granted day:2014-08-14
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