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:
Jul. 04, 2000
Filed:
Nov. 24, 1997
Applicant:
Inventors:
Jae-phil Cho, Suwon-si, KR;
Geun-bae Kim, Suwon-si, KR;
Assignee:
Samsung Display Devices Co., Inc., Kyungki-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; C01G / ;
U.S. Cl.
CPC ...
429224 ; 4292313 ; 429223 ; 423599 ;
Abstract
A process for preparing an active material for a cathode of a lithium ion battery comprising the steps of: dissolving lithium hydroxide, manganese acetate as starting materials into water to form a solution; adding a chelating agent into the solution; producing gel or liquid phase by evaporating the solution; and producing a powder by raising temperature at the rate of 5.about.20 .degree. C./min, combusting and calcinating the gel or liquid phase at 300.about.400 .degree. C. during 2.about.3 hours is disclosed.