Invention Grant
- Patent Title: Negative electrode for lithium-ion secondary cell and method for manufacturing same
- Patent Title (中): 锂离子二次电池用负极及其制造方法
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Application No.: US14439063Application Date: 2013-10-23
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Publication No.: US09520595B2Publication Date: 2016-12-13
- Inventor: Kouichi Izuhara , Makoto Daifuku , Yasushi Miyata
- Applicant: SANGO Co., Ltd. , CITY OF NAGOYA
- Applicant Address: JP Miyoshi-shi JP Nagoya-shi
- Assignee: SANGO Co., Ltd.,CITY OF NAGOYA
- Current Assignee: SANGO Co., Ltd.,CITY OF NAGOYA
- Current Assignee Address: JP Miyoshi-shi JP Nagoya-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2012-238289 20121029
- International Application: PCT/JP2013/078737 WO 20131023
- International Announcement: WO2014/069310 WO 20140508
- Main IPC: H01M4/13
- IPC: H01M4/13 ; H01M4/587 ; H01M4/133 ; H01M4/1393 ; C01B31/04 ; B82Y30/00 ; B82Y40/00 ; H01M4/04 ; H01M4/66 ; H01M10/0525 ; H01M4/36 ; H01M4/02

Abstract:
A negative electrode for a lithium-ion secondary cell is configured in a novel manner, having a charge-discharge capacity, as determined per unit weight of the carbon used in the electrode, that is markedly higher than the theoretical capacity of graphite, and having a surface that is stabilized against repeated charging and discharging. A negative electrode for a lithium-ion secondary cell in which a carbon layer obtained by building up and growing a graphene sheet is formed on the surface of a substrate comprising an iron-based metal, the carbon layer being formed in a diagonal direction in relation to the substrate, and the carbon layer being used as the surface of the negative electrode. As measured using an argon laser having a wavelength of 532 nm, the Raman spectrum of the graphite that constitutes the carbon nanochip layer has a g/d ratio of 0.30-0.80.
Public/Granted literature
- US20150311526A1 NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY CELL AND METHOD FOR MANUFACTURING SAME Public/Granted day:2015-10-29
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