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, 2013
Filed:
Apr. 07, 2009
Hitoshi Ishikawa, Sendai, JP;
Yasutaka Kono, Sendai, JP;
Koji Utsugi, Sendai, JP;
Yoko Hashizume, Sendai, JP;
Shinako Kaneko, Sendai, JP;
Hiroshi Kobayashi, Sendai, JP;
Hitoshi Ishikawa, Sendai, JP;
Yasutaka Kono, Sendai, JP;
Koji Utsugi, Sendai, JP;
Yoko Hashizume, Sendai, JP;
Shinako Kaneko, Sendai, JP;
Hiroshi Kobayashi, Sendai, JP;
NEC Energy Devices, Ltd., Sagamihara-shi, JP;
Abstract
A non-aqueous electrolyte can suppress decomposition of a solvent, improve the cycle life of a secondary battery, suppress the rise of resistance of a secondary battery and improve the capacity maintenance ratio of a secondary battery. A non-aqueous electrolyte secondary battery formed by using such a non-aqueous electrolyte includes a non-aqueous electrolyte containing an aprotic solvent and a disulfonic acid ester as expressed by chemical formula 1 shown below, a positive electrode and a negative electrode: