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. 18, 2000
Filed:
Aug. 01, 1997
Fuji Photo Film Co. Ltd., Kanagawa, JP;
Abstract
The present invention provides a nonaqueous secondary battery having a high discharge potential, a high discharge capacity, a good charge-discharge cycle characteristics and good high current charge-discharge characteristics. That is, a novel nonaqueous secondary battery is disclosed, comprising a sheet-shaped positive electrode having at least one layer containing a lithium-containing transition metal compound as a positive electrode material, a sheet-shaped negative electrode having at least one layer containing a negative electrode material capable of intercalating and deintercalating a lithium ion, a porous separator comprising polyolefines, and a nonaqueous electrolyte containing a lithium salt, wherein at least one of said sheet-shaped negative electrode and said sheet-shaped positive electrode comprises three or more layers applied to a current collector and the two layers furthest from said current collector each contain an insulating solid fine particle which doesn't substantially intercalate and deintercalate a lithium ion.