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:
Oct. 05, 1999
Filed:
Dec. 29, 1997
Applicant:
Inventors:
Jeffery Raymond Dahn, Surrey, CA;
Erik Rossen, North Vancouver, CA;
Jan N Reimers, Maple Ridge, CA;
Eric Wayne Fuller, Maple Ridge, CA;
Assignee:
NEC Moli Energy (Canada) Limited, Maple Ridge, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ; C01D / ;
U.S. Cl.
CPC ...
423599 ; 4231795 ; 423 49 ;
Abstract
Lithiated manganese oxides are synthesized using a novel two stage process. Using appropriate starting materials, lithiation is accomplished via low temperature ion exchange in aqueous warm salt solution. A drying stage follows which completes the synthesis. Materials suitable for use as cathodes in lithium ion rechargeable batteries have been prepared in this way. Other solid solution transition metal materials might also be prepared using a similar low temperature ion exchange process.