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:
Apr. 11, 2023
Filed:
Jul. 12, 2018
Daikin Industries, Ltd., Osaka, JP;
Hisako Nakamura, Osaka, JP;
Shigeaki Yamazaki, Osaka, JP;
Kenzou Takahashi, Osaka, JP;
Yuuki Suzuki, Osaka, JP;
Akiyoshi Yamauchi, Osaka, JP;
Kotaro Hayashi, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
An electrolyte solution for a lithium ion secondary battery, containing a compound (1) represented by the following formula (1): wherein Rand Rare each independently a C1-C4 alkyl group optionally containing an ether bond, and wherein chloride ion is present at a concentration of 1.0×10to 1.0×10ppm. Also disclosed is an electrolyte solution for a lithium ion secondary battery, containing an imidazolium cation (1-1) represented by the following formula (1-1), a bis(oxalato)borate anion, and a hexafluorophosphate anion, the formula (1-1) being: wherein Rand Rare each independently a C1-C4 alkyl group optionally containing an ether bond, and wherein chloride ion is present at a concentration of 1.0×10to 1.0×10ppm.