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:
Oct. 31, 2017
Filed:
Apr. 12, 2013
Daikin Industries, Ltd., Osaka-shi, Osaka, JP;
Mayuko Taeda, Settsu, JP;
Meiten Koh, Settsu, JP;
Aoi Nakazono, Settsu, JP;
Michiru Kagawa, Settsu, JP;
Akiyoshi Yamauchi, Settsu, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
The present invention aims to provide an electrolyte solution for forming, for example, a secondary battery having excellent oxidation resistance and high voltage cycle characteristics; an electrochemical device such as a lithium-ion secondary battery that contains the electrolyte solution; and a module that contains the electrochemical device. The present invention provides an electrolyte solution containing a solvent and an electrolyte salt, wherein the solvent contains a fluorine-containing compound (A) represented by formula (1) shown below, and a fluorine-containing compound (B) represented by formula (2) shown below:RfOCOOR  (1)wherein Rfis a C1-C4 fluorine-containing alkyl group, and R is a C1-C4 non-fluorinated alkyl group, andRfOCOORf  (2)wherein Rfand Rfare the same or different, and each is a C1-C4 fluorine-containing alkyl group.