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:
Jun. 02, 1998
Filed:
Oct. 09, 1996
Applicant:
Inventors:
Assignee:
Japan Storage Battery Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429218 ; 429223 ;
Abstract
A method for manufacturing positive a electrode active material for a lithium battery represented by general formula Li.sub.x Mn.sub.2-y M.sub.y O.sub.4 (M: a 2-valency metal, 0.45.ltoreq.y.ltoreq.0.60, 1.ltoreq.x.ltoreq.2.1) having cubic spinel structure of and a lattice constant within 8.190 angstroms by employing a solid phase reaction, comprising the steps of firing a lithium compound, a manganese compound and a metal M compound and refiring the fired material after pressurizing it at least once to remove a metal M oxide.