Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE BATTERY AND NONAQUEOUS ELECTROLYTE BATTERY USING THIS MATERIAL
Document Type and Number:
Japanese Patent JP3049892
Kind Code:
B2
Abstract:
PURPOSE: To provide a nonaqueous electrolyte secondary battery having a high service capacity, and showing superior cycle characteristic and a favorable high temperature proservation characteristic by improving a positive electrode active material.
CONSTITUTION: CuMn2O4. is used as a starting material. Spiral analogous compound oxide CuxMn2O4 (on the condition of 0.05≤x≤0.3) or spinel analogous compound oxide LiyCuxMn2O4 (on the condition of 0.05≤x≤0.3 and 0.1≤y≤2) which is produced by abstracting a part of copper therefrom is used as a positive electrode active material. Owing to this process a high temperature preservation characteristic is sharply improved.
Inventors:
Koji Yoshizawa
Akira Ohta
Akira Ohta
Application Number:
JP33654191A
Publication Date:
June 05, 2000
Filing Date:
December 19, 1991
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H01M10/05; H01M4/131; H01M4/133; H01M4/134; H01M4/505; H01M4/583; H01M10/0525; (IPC1-7): H01M4/58; H01M10/40
Domestic Patent References:
| JP3271365A | ||||
| JP63114064A | ||||
| JP2267861A |
Other References:
Ｊ．Ｍ．Ｔａｒａｓｃｏｎ ｅｔ ａｌ．，”Ｔｈｅ Ｓｐｉｎｅｌ Ｐｈａｓｅ ｏｆ ＬｉＭｎ▲下２▼Ｏ▲下４▼ ａｓ ａ Ｃａｔｈｏｄｅ ｉｎ Ｓｅｃｏｎｄａｒｙ Ｌｉｔｈｉｕｍ Ｃｅｌｌｓ”，Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｅｌｅｃｔｒｏｃｈｅｍｉｃａｌ Ｓｏｃｉｅｔｙ，Ｏｃｔｏｂｅｒ １９９１，Ｖｏｌ．１３８，Ｎｏ．１０，ｐ２８５９−２８６４
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)