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. 06, 1994
Filed:
Jun. 29, 1993
Applicant:
Inventors:
Toru Nagaura, Fukushima, JP;
Hisayuki Kato, Fukushima, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
296231 ; 205 59 ; 423599 ;
Abstract
A nonaqueous electrolyte secondary cell provided with (a) a negative electrode consisting essentially of a carrier for a negative electrode active material , said carrier being capable of being doped and dedoped with lithium, (b) a positive electrode comprising, as an essential positive electrode active material, Li.sub.1+x Mn.sub.2 O.sub.4, wherein x>0, obtained by doping a lithium-manganese complex oxide with lithium and (c) a nonaqueous electrolyte. The secondary cell has an increased cell capacity as well as a high energy density and an excellent charge-discharge characteristics .