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:
May. 05, 1998
Filed:
Feb. 24, 1997
Applicant:
Inventors:
Assignee:
National Research Council of Canada, Ottawa, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ;
U.S. Cl.
CPC ...
429224 ; 429197 ;
Abstract
The invention disclosed relates to a new method of forming spinel-related .lambda.-Li.sub.2-x Mn.sub.2 O.sub.4, wherein 0.ltoreq.x.ltoreq.2, solely by electrochemical means with air-stable orthorhombic LiMnO.sub.2 as the starting material. This spinel-related material is hydroscopic, metastable and is typically made by chemical means, followed by electrochemical conversion of spinel-type LiMn.sub.2 O.sub.4. Also disclosed are new secondary lithium ion electrochemical cells employing as initial active cathode material a compound of formula LiMnO.sub.2, having a specific orthorhombic crystal structure.