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. 03, 2018
Filed:
Jul. 31, 2013
Nec Corporation, Tokyo, JP;
Takehiro Noguchi, Tokyo, JP;
Hideaki Sasaki, Tokyo, JP;
Makiko Takahashi, Tokyo, JP;
Yuukou Katou, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An embodiment of the present invention relates to a lithium secondary battery comprising a nonaqueous electrolytic solution comprising a phosphate compound represented by the following general formula (1): O═P(O—R)(O—R)(O—R) (1), wherein R, R, and Rare each alkyl group or the like or a group comprising an ether bond represented by —R—O—R(Rrepresents alkylene group, and Rrepresents alkyl group), and at least one of R, R, and Ris a group comprising an ether bond, and at least one of R, R, and Rcontains fluorine, and a positive electrode active material having a charge and discharge region of 4.5 V or more versus lithium.