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:
May. 17, 2016
Filed:
Jul. 20, 2011
Shinako Kaneko, Kanagawa, JP;
Hitoshi Ishikawa, Kanagawa, JP;
Yasutaka Kono, Kanagawa, JP;
Yoko Hashizume, Kanagawa, JP;
Shinako Kaneko, Kanagawa, JP;
Hitoshi Ishikawa, Kanagawa, JP;
Yasutaka Kono, Kanagawa, JP;
Yoko Hashizume, Kanagawa, JP;
NEC Energy Devices, Ltd., Sagamihara-shi, Kanagawa, JP;
Abstract
There is provided a lithium ion battery which maintains the flame retardancy of an electrolyte over a long period of time, has high energy density, and has improved charge/discharge cycle characteristics, high temperature storage characteristics, and rate characteristics. The lithium ion battery according to the present exemplary embodiment is a lithium ion battery comprising an electrolyte containing at least an ionic liquid and a lithium salt, a positive electrode, and a negative electrode, wherein the negative electrode includes a negative electrode active material which is a carbon material treated with a surface treatment agent.