Title:
MANUFACTURE OF POSITIVE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTIC BATTERY
Document Type and Number:
Japanese Patent JP3487941
Kind Code:
B2
Abstract:
PURPOSE: To provide a positive active material for a nonaqueous electrolytic battery by reacting a mixture of a lithium compound and a manganese compound that can be converted into a citrate with citric acid, and baking the citrate obtained.
CONSTITUTION: A lithium compound such as lithium hydroxide and lithium carbonate capable of being converting into a citrate, is reacted with a manganese compound such as manganese carbonate and manganese hydroxide to obtain a coprecipitate or a mixture of metallic compounds. The coprecipitate or the mixture is reacted with citric acid to produce a composite citrate, and the compound citrate obtained is baked at 400-1100°C to produce a composite metal oxide (LiMn2O4, LiMnO2 and others). The composite metal oxide has high uniformity and high crystallinity, and is used as a positive active material for a nonaqueous electrolytic battery.
Inventors:
Susumu Hiyama
Application Number:
JP3097495A
Publication Date:
January 19, 2004
Filing Date:
February 20, 1995
Export Citation:
Assignee:
Seimi Chemical Co., Ltd.
International Classes:
H01M10/05; C01G45/02; H01M4/505; (IPC1-7): H01M4/58; H01M4/02; H01M10/40
Domestic Patent References:
| JP7142065A | ||||
| JP8148147A |
Attorney, Agent or Firm:
Mamoru Tsunoda