Invention Grant
US08236454B2 Negative electrode for lithium ion secondary battery and lithium ion secondary battery including the same
失效
锂离子二次电池用负极和包含锂离子二次电池的锂离子二次电池
- Patent Title: Negative electrode for lithium ion secondary battery and lithium ion secondary battery including the same
- Patent Title (中): 锂离子二次电池用负极和包含锂离子二次电池的锂离子二次电池
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Application No.: US11898695Application Date: 2007-09-14
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Publication No.: US08236454B2Publication Date: 2012-08-07
- Inventor: Yasutaka Kogetsu , Shuji Ito
- Applicant: Yasutaka Kogetsu , Shuji Ito
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2006-249452 20060914
- Main IPC: H01M4/02
- IPC: H01M4/02 ; H01M4/13 ; H01M4/64 ; H01M4/72 ; H01M4/76
Abstract:
A negative electrode for a lithium ion secondary battery of the present invention includes a sheet-like current collector and an active material layer carried on the current collector. The current collector includes a substrate and a surface portion that undergoes plastic deformation more easily than the substrate. The surface portion has protrusions and recesses. The active material layer includes a plurality of columnar particles containing silicon. The columnar particles are carried on the surface portion.
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