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:
Aug. 12, 2014
Filed:
Aug. 04, 2009
Hidekazu Yamamoto, Kobe, JP;
Atsushi Fukui, Kobe, JP;
Taizou Sunano, Kobe, JP;
Maruo Kamino, Kobe, JP;
Hidekazu Yamamoto, Kobe, JP;
Atsushi Fukui, Kobe, JP;
Taizou Sunano, Kobe, JP;
Maruo Kamino, Kobe, JP;
SANYO Electric Co., Ltd., Moriguchi-shi, JP;
Abstract
The present invention is made to improve charge-discharge cycle performances under high temperature environment in a non-aqueous electrolyte secondary battery using a negative electrode containing a negative electrode active material of particulate silicon and/or silicon alloy and a binding agent. A non-aqueous electrolyte secondary battery according to the present invention includes a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, wherein the negative electrode includes a negative electrode active material containing particulate silicon and/or silicon alloy and a binding agent, and the non-aqueous electrolyte contains fluorinated cyclic carbonate and a prescribed diisocyanate compound, and when Li storage volume per unit area of the negative electrode of the non-aqueous electrolyte secondary battery under charging condition is determined as A and the theoretical maximum Li storage volume per unit area of the negative electrode is determined as B, a utilizing rate (%) of negative electrode which is expressed by (A/B)×100 is 45% or less.