Title:
非水電解質二次電池
Document Type and Number:
Japanese Patent JP4831075
Kind Code:
B2
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%.
Inventors:
Takayuki Shirane
Kaoru Inoue
Masaya Uga
Kaoru Inoue
Masaya Uga
Application Number:
JP2007558369A
Publication Date:
December 07, 2011
Filing Date:
August 31, 2007
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H01M10/0587; H01M4/13; H01M4/134; H01M4/1395; H01M4/48; H01M10/052; H01M10/0525
Domestic Patent References:
| JPH0412471A | 1992-01-17 | |||
| JPH08130035A | 1996-05-21 | |||
| JPH1064522A | 1998-03-06 | |||
| JP2006092748A | 2006-04-06 | |||
| JP2004319469A | 2004-11-11 | |||
| JP2004296103A | 2004-10-21 | |||
| JP2002313345A | 2002-10-25 | |||
| JP2005100959A | 2005-04-14 |
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Kentaro Fujii
Daisuke Nagano
Kentaro Fujii