Title:
非水電解液二次電池用正極
Document Type and Number:
Japanese Patent JP5694191
Kind Code:
B2
Abstract:
To provide a positive electrode for nonaqueous secondary batteries having improved charge/discharge cycle characteristics, the positive electrode contains in its active material layer a compound represented by formula: LizNi1-x-yTix(MpLiq)yO2 wherein x is a positive number less than 0.3; y is a positive number less than 0.25; z is a number from 0.95 to 1.05; M is a polyvalent metal satisfying the relation: prM+qrL=54 to 69 pm (where rM is the ionic radius of M, and rL is the ionic radius of Li+); p is a positive number; q is 0 or greater; p and q satisfy the relations: p+q=1 and pv+q=3; and v is the valence of the metal M. When analyzed by XRD, the compound shows diffraction peaks assigned to the planes (003) and (104). The ratio of the area of the peak of the (003) plane to that of the (104) plane is 0.5 to 0.75.
Inventors:
Todorov Janko Marinov
Yasunori Tahira
Yasunori Tahira
Application Number:
JP2011543287A
Publication Date:
April 01, 2015
Filing Date:
November 25, 2010
Export Citation:
Assignee:
Mitsui Mining & Smelting Co., Ltd.
International Classes:
H01M4/62; H01M4/131; H01M10/052; H01M10/0566
Domestic Patent References:
| JP2007265731A | 2007-10-11 | |||
| JP2009224097A | 2009-10-01 | |||
| JP2009224098A | 2009-10-01 | |||
| JP2008198493A | 2008-08-28 | |||
| JP2008084665A | 2008-04-10 |
Attorney, Agent or Firm:
Osamu Hatori
Yoshiyuki Matsushima
Yoshiyuki Matsushima