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:
Oct. 16, 2007
Filed:
Dec. 19, 2002
Fusaji Kita, Ibaraki, JP;
Hideo Sakata, Kyoto, JP;
Haruki Kamizori, Ibaraki, JP;
Hitachi Maxell, Ltd., Ibaraki-shi, JP;
Abstract
A non-aqueous secondary battery is provided, which has excellent overcharging safety, less generation of gas during storage at a high temperature, and can ensure storage reliability. A non-aqueous secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte solution, wherein the non-aqueous electrolyte solution contains a compound A in which a halogen group is bonded to a benzene ring and an aromatic or/and heterocyclic compound B oxidized at a potential lower than that of the compound A, a content of the compound A with respect to the total non-aqueous electrolyte solution is 1% by mass to 15% by mass, and a content of the compound B with respect to the total non-aqueous electrolyte solution is 0.005% by mass to 3% by mass.