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:
Dec. 11, 2001
Filed:
Dec. 21, 1999
Applicant:
Inventors:
Alexei B. Gavrilov, Fairport, NY (US);
Yuriy V. Mikhaylik, Tucson, AZ (US);
Assignee:
Moltech Corporation, Tucson, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 7/00 ; H02J 7/04 ;
U.S. Cl.
CPC ...
H02J 7/00 ; H02J 7/04 ;
Abstract
Provided is a method for increasing the cycle life of discharged lithium electrochemical cells, wherein the cell comprises (i) an anode comprising lithium; (ii) a cathode comprising an electroactive sulfur-containing material; and (iii) a liquid electrolyte interposed between the anode and cathode; wherein the method comprises the steps of: (a) charging the cell at an initial low rate of less than 0.2 mA/cm,to a cell voltage in the range of 2.1 to 2.3 V followed by (b) a subsequent high rate of greater than 0.2 mA/cm,to a cell voltage of at least 2.4 V.