Title:
【発明の名称】酸化マンガンリチウムスピネルを処理する方法
Document Type and Number:
Japanese Patent JP2001527686
Kind Code:
A
Abstract:
A method of treating lithium manganese oxide of spinel structure is disclosed. The method involves heating the lithium manganese oxide spinel in an atmosphere of an inert gas, e.g, argon, helium, nitrogen or carbon dioxide, which does not react with the spinel. Alternatively, the spinel may be first coated with an alkali metal hydroxide, preferably lithium, sodium or potassium hydroxide and then heated in an atmosphere preferably containing carbon dioxide. Such treatment of lithium manganese oxide spinel improves the performance of the spinel when employed as an electrode in rechargeable cells such as lithium-ion cells. Alternatively, the spinel may be first treated in an aqueous solution of a soluble metal salt of a carboxylic acid prior to treatment with heated carbon dioxide or inert gas. In such latter case the spinel may optionally also be treated with an alkali metal hydroxide prior to treatment with carbon dioxide or inert gas.
Inventors:
Enoch, I. One
Application Number:
JP50608798A
Publication Date:
December 25, 2001
Filing Date:
July 08, 1997
Export Citation:
Assignee:
Duracell, Inc.
International Classes:
C01G45/00; H01M4/50; H01M4/505; H01M4/131; H01M10/0525; H01M10/36; (IPC1-7): H01M4/50; C01G45/00; H01M4/58
Attorney, Agent or Firm:
Kazuo Sato (2 outside)