Invention Grant
- Patent Title: Negative electrode for lithium secondary battery and method for producing same
- Patent Title (中): 锂二次电池用负极及其制造方法
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Application No.: US13504767Application Date: 2010-11-10
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Publication No.: US08986883B2Publication Date: 2015-03-24
- Inventor: Hideyuki Morimoto , Shin-ichi Tobishima
- Applicant: Hideyuki Morimoto , Shin-ichi Tobishima
- Applicant Address: JP Gunma
- Assignee: National University Corporation Gunma University
- Current Assignee: National University Corporation Gunma University
- Current Assignee Address: JP Gunma
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2009-260750 20091116
- International Application: PCT/JP2010/069966 WO 20101110
- International Announcement: WO2011/058981 WO 20110519
- Main IPC: H01M4/52
- IPC: H01M4/52 ; H01M4/62 ; H01M4/525 ; H01M4/131 ; H01M4/1391 ; H01M4/02

Abstract:
A negative electrode for a lithium secondary battery, in which α-Fe2O3 that is low in cost, has little environmental impact and has high theoretical capacity is used as an active material, maintains high adhesiveness between a current collector and an electrode layer, and can simultaneously achieve both of an improvement in the cycle characteristics and high capacity. In a negative electrode for a lithium secondary battery, which is configured of a current collector, and an electrode layer that is formed on the current collector and contains at least a negative electrode active material, a conductive assistant and a binder component, the negative electrode active material is composed of α-Fe2O3 particles that generate a conversion electrode reaction, the binder component is a mixture of polyamide acid and partially imidized polyamide acid. The electrode layer is configured so that a concentration of the binder component decreases as distanced from the current collector.
Public/Granted literature
- US20120214063A1 NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING SAME Public/Granted day:2012-08-23
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