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. 07, 2015
Filed:
Aug. 26, 2011
Masahiro Suguro, Tokyo, JP;
Daisuke Kawasaki, Tokyo, JP;
Midori Shimura, Tokyo, JP;
Kazuaki Matsumoto, Tokyo, JP;
Yoko Hashizume, Tokyo, JP;
Masahiro Suguro, Tokyo, JP;
Daisuke Kawasaki, Tokyo, JP;
Midori Shimura, Tokyo, JP;
Kazuaki Matsumoto, Tokyo, JP;
Yoko Hashizume, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
An object is to provide a higher-performance secondary battery, particularly to provide a secondary battery having a low impedance. The present exemplary embodiment is a secondary battery comprising an electrode assembly in which a positive electrode and a negative electrode are arranged to face each other, an electrolyte liquid, and a package accommodating the electrode assembly and the electrolyte liquid, wherein the negative electrode includes a negative electrode active substance containing at least one selected from a metal (a) capable of being alloyed with lithium, and a metal oxide (b) capable of occluding and releasing lithium ions, a negative electrode binder, and a negative electrode current collector; and the electrolyte liquid contains a sulfide compound.