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:
Jan. 01, 2002
Filed:
Aug. 16, 1999
Applicant:
Inventors:
Tokuo Suita, Yokkaichi, JP;
Hiromitsu Miyazaki, Yokkaichi, JP;
Assignee:
Ishihara Sangyo Kaisha, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01D 1/500 ; C01G 4/500 ; H01M 4/50 ;
U.S. Cl.
CPC ...
C01D 1/500 ; C01G 4/500 ; H01M 4/50 ;
Abstract
The present invention relates to a lithium manganate useful as an active material of positive electrodes for lithium batteries, and a process for producing the same, a positive electrode which uses the same as an active material of positive electrode, and a lithium battery. The lithium manganate of the present invention has a cubic particle form and contains voids in the particles, and therefore lithium batteries using it as an active material of positive electrodes provides a high initial discharge capacity of at least 95 mAh/g and, besides, are excellent in cycle characteristics.