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:
May. 30, 2017
Filed:
Jun. 10, 2013
Nec Corporation, Tokyo, JP;
Masahiro Suguro, Tokyo, JP;
Midori Shimura, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
The present invention relates to a secondary battery, comprising an electrode element in which a positive electrode and a negative electrode are opposed to each other, and an electrolyte solution, wherein the negative electrode active material comprises a metal alloyable with lithium and/or a metal oxide capable of intercalating/deintercalating lithium ions, and the electrolyte solution is a nonaqueous electrolyte solution comprising an electrolyte salt dissolved in a nonaqueous solvent, and comprises a carbonyl compound represented by the following formula (1): wherein two Rs may be the same or different from each other, and each independently represents hydrogen atom, substituted or unsubstituted alkyl group, cycloalkyl group, alkenyl group, alkynyl group, substituted or unsubstituted aromatic group, oxyalkylene group, substituted or unsubstituted alkoxy group, cycloalkyloxy group, alkenyloxy group, alkynyloxy group, substituted or unsubstituted aromatic oxy group, or oxyalkyleneoxy group.