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:
Sep. 09, 2013
Filed:
May. 17, 2012
Akira Yamaguchi, Fukushima, JP;
Tadahiko Kubota, Kanagawa, JP;
Atsumichi Kawashima, Fukushima, JP;
Akinori Kita, Fukushima, JP;
Satoshi Mizutani, Fukushima, JP;
Hiroshi Inoue, Fukushima, JP;
Akira Yamaguchi, Fukushima, JP;
Tadahiko Kubota, Kanagawa, JP;
Atsumichi Kawashima, Fukushima, JP;
Akinori Kita, Fukushima, JP;
Satoshi Mizutani, Fukushima, JP;
Hiroshi Inoue, Fukushima, JP;
Sony Corporation, Tokoy, JP;
Abstract
A battery capable of improving battery characteristics such as cycle characteristics is provided. An electrolytic solution is impregnated in a separator. The electrolytic solution contains 4-fluoro-1,3-dioxolane-2-one. Fluorine ion content in the electrolytic solution is preferably from 10 weight ppm to 3200 weight ppm. Thereby, chemical stability of the electrolytic solution is improved, and cycle characteristics are improved. The present invention is effective for the case using an anode active material containing Sn or Si as an element for an anode.