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. 27, 2025
Filed:
Mar. 09, 2020
The University of Tokyo, Tokyo, JP;
Mitsubishi Materials Electronic Chemicals Co., Ltd., Akita, JP;
Atsuo Yamada, Tokyo, JP;
Yuki Yamada, Tokyo, JP;
Seongjae Ko, Tokyo, JP;
Shota Miura, Tokyo, JP;
Takeshi Kamiya, Akita, JP;
Tsunetoshi Honda, Tokyo, JP;
Jun Akikusa, Tokyo, JP;
THE UNIVERSITY OF TOKYO, Tokyo, JP;
MITSUBISHI MATERIALS ELECTRONIC CHEMICALS CO., LTD., Akita, JP;
Abstract
According to the present invention, an electrolyte is composed of one or more lithium salts of asymmetric imides each having a perfluoroalkyl group, or a mixed salt of a lithium salt of an asymmetric imide having a perfluoroalkyl group and a lithium salt of a symmetric imide having a perfluoroalkyl group. The composition ratio of the one or more lithium salts and the mixed salt is expressed by (lithium salt of asymmetric imide)(lithium salt of symmetric imide)(wherein x is from 0.1 to 1.0) in terms of the molar ratio; the asymmetric imide lithium salt is (CFSO)(CFSO)NLi or (CFSO)(CFSO)NLi; the symmetric imide lithium salt is (CFSO)NLi; and the composition of an electrolyte solution according to the present invention contains 1.0 mole or more but less than 2 moles of a solvent per 1 mole of the one or more lithium salts or the lithium salts of the mixed salt.