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:
Jun. 04, 2002
Filed:
Jan. 14, 1999
Applicant:
Inventors:
Kazuaki Ado, Ikeda, JP;
Mitsuharu Tabuchi, Ikeda, JP;
Hironori Kobayashi, Ikeda, JP;
Hiroyuki Kageyama, Ikeda, JP;
Assignee:
Agency of Industrial Science & Technology, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G 4/900 ; H01M 4/58 ;
U.S. Cl.
CPC ...
C01G 4/900 ; H01M 4/58 ;
Abstract
A lithium cobalt oxide (LiCoO ) having a layered rock-salt type structure produced at low temperatures by hydrothermally treating at least one water-soluble cobalt salt in an aqueous solution containing a water-soluble lithium salt and an alkali metal hydroxide at 105 to 300° C. in the presence of an oxidizing agent. An inexpensive salt of divalent cobalt is used as a starting material in this process. The lithium cobalt oxide thus obtained is useful as a cathode material for rechargeable lithium batteries.