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. 14, 1999
Filed:
Apr. 08, 1998
Applicant:
Inventors:
Assignee:
Korea Kumho Petro Chemical Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
2525181 ; 2525212 ; 2525191 ; 429224 ; 429223 ; 423594 ; 423599 ; 423592 ;
Abstract
Provided is a method of preparing a cathode material for lithium ion cell, which is designed to have the cycle characteristic enhanced and high initial discharge capacity, by synthesizing LiMn.sub.2 O.sub.4 powder having a stable spinel structure, vigorously agitating the powder in an aqueous solution of Li and Ni ions, dispersing the solution through a supersonic wave treatment, filtering it so as for the powder to adsorb the ions, and performing a heat treatment for doping the ions.