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:
Apr. 07, 2015
Filed:
Dec. 16, 2010
Takakazu Hirose, Fukushima, JP;
Kenichi Kawase, Fukushima, JP;
Takashi Fujinaga, Fukushima, JP;
Masaharu Senoue, Fukushima, JP;
Motoki Endo, Fukushima, JP;
Masayuki Iwama, Fukushima, JP;
Takakazu Hirose, Fukushima, JP;
Kenichi Kawase, Fukushima, JP;
Takashi Fujinaga, Fukushima, JP;
Masaharu Senoue, Fukushima, JP;
Motoki Endo, Fukushima, JP;
Masayuki Iwama, Fukushima, JP;
Sony Corporation, Tokyo, JP;
Abstract
A lithium-ion secondary battery allowed to improve cycle characteristics and initial charge-discharge characteristics is provided. The lithium-ion secondary battery includes a cathode; an anode; and an electrolytic solution. The anode includes an anode active material layer including a plurality of anode active material particles. The anode active material particles each include a core section and a coating section applied to a part or a whole of a surface of the core section, and the core section includes a silicon-based material (SiO: 0≦x<0.5) and the coating section includes an amorphous or low-crystalline silicon-based material (SiO: 0.5≦y≦1.8).