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:
Feb. 08, 2000
Filed:
Dec. 22, 1997
Applicant:
Inventors:
Takuya Endo, Miyagi, JP;
Kimio Takahashi, Miyagi, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ;
U.S. Cl.
CPC ...
429232 ; 429224 ; 4292311 ;
Abstract
Disclosed is a non-aqueous electrolyte secondary cell comprising a cathode made from a cathode compound that comprises a manganese oxide or a lithium-manganese composite oxide, a lithium metal anode or an anode comprising lithium or capable of doping and dedoping lithium ions, and a non-aqueous electrolyte, which is characterized in that the cathode compound contains an alkali metal carbonate of being from 0.5 to 20% by weight of the dry cathode compound. Even when used at high temperatures over room temperature for a long period of time, the cell is deteriorated little.