The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 1999
Filed:
Oct. 08, 1997
Applicant:
Inventors:
Kazunori Takada, Osaka, JP;
Shigeo Kondo, Hirakata, JP;
Ryoji Kanno, Kobe, JP;
Tatsuya Nakamura, Hiroshima, JP;
Mikio Takano, Kyoto, JP;
Assignees:
Matsushita Electric Industrial Co., Ltd., Osaka-fu, JP;
Toda Kogyo Corporation, Hiroshimaken, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429221 ; 4292311 ; 423641 ;
Abstract
A lithium iron oxide which can be used as an electrode active material for a lithium battery is disclosed. A lithium iron oxide represented by Li.sub.x FeO.sub.2, where 0<x<2, having a tunnel structure similar to .beta.-FeO(OH) can be synthesized by heating a suspension prepared by suspending .beta.-FeO(OH) and a lithium compound in an alcohol at a temperature of not lower than 50.degree. C., more preferably at a temperature of lower than the boiling point of the alcohol used for the suspension.