Invention Grant
- Patent Title: Non-aqueous battery with columnar active material
- Patent Title (中): 带柱状活性物质的非水电池
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Application No.: US12064307Application Date: 2007-08-31
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Publication No.: US08313862B2Publication Date: 2012-11-20
- Inventor: Takayuki Shirane , Kaoru Inoue , Masaya Ugaji
- Applicant: Takayuki Shirane , Kaoru Inoue , Masaya Ugaji
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2006242450 20060907
- International Application: PCT/JP2007/066969 WO 20070831
- International Announcement: WO2008/029719 WO 20080313
- Main IPC: H01M4/13
- IPC: H01M4/13 ; H01M4/134

Abstract:
A non-aqueous electrolyte secondary battery has at least negative electrode, a positive electrode, and a separator between the positive electrode and negative electrode. Negative electrode has columnar first negative electrode active materials that are discretely formed on the outer peripheral surface of negative electrode current collector in the winding direction and can reversibly insert and extract lithium ions, and columnar second negative electrode active materials discretely formed on the inner peripheral surface. The positive electrode has positive electrode mixture layers containing a positive electrode active material capable of reversibly inserting and extracting lithium ions, on both surfaces of a positive electrode current collector. The difference between the porosity generated between first negative electrode active materials in negative electrode and that generated between the second negative electrode active materials in winding is set within 1.1%.
Public/Granted literature
- US20090317721A1 NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY Public/Granted day:2009-12-24
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