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. 03, 2001
Filed:
Aug. 19, 1997
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/24 ;
U.S. Cl.
CPC ...
H01M 4/24 ;
Abstract
The invention provides a lithium secondary battery comprising a cathode having a lithium cobalt complex oxide or a lithium nickel complex oxide as a cathode active material, which is characterized in that said lithium cobalt complex oxide is in the form of hollow, spherical sinters of particles, and said sinters have a mean particle diameter of from about 1 to 5 micrometers and a specific surface area of from about 2 to 10 m,/g. The lithium secondary battery has high capacity and excellent charge-discharge cycle characteristics.