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:
Dec. 22, 2015
Filed:
Aug. 26, 2011
Daisuke Kawasaki, Tokyo, JP;
Masahiro Suguro, Tokyo, JP;
Midori Shimura, Tokyo, JP;
Kazuaki Matsumoto, Tokyo, JP;
Yoko Hashizume, Tokyo, JP;
Daisuke Kawasaki, Tokyo, JP;
Masahiro Suguro, Tokyo, JP;
Midori Shimura, Tokyo, JP;
Kazuaki Matsumoto, Tokyo, JP;
Yoko Hashizume, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A secondary battery having high capacity and satisfactory high-temperature cycle characteristics is provided. A secondary battery according to the exemplary embodiment has an electrode element in which a positive electrode and a negative electrode are arranged so as to face each other, an electrolytic solution and an outer package packaging the electrode element and the electrolytic solution, wherein the negative electrode is formed by binding a negative electrode active material containing at least one of a metal (a) capable of forming an alloy with lithium and a metal oxide (b) capable of absorbing and releasing lithium ions, to a negative electrode collector, with a polyimide or a polyamide-imide serving as a negative electrode binder; and the electrolytic solution contains a phosphazene compound.