ELECTROLYTE SOLUTION, ELECTROCHEMICAL DEVICE, LITHIUM BATTERY, AND MODULE

• Main Authors: KINOSHITA, SHINICHI, KOH, MEITEN, KUWAJIMA, YOSHIKO, MIYAWAKI, HITOMI, SAKATA, HIDEO, TANI, AKINORI, YAMAUCHI, AKIYOSHI
• Format: Patent
• Language: English; French; German
• Published: 24.06.2015
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

An object of the present invention is to provide a lithium cell exhibiting a high remaining capacity after high-temperature storage even if used at high voltages, and an electrolytic solution used for the cell. The present invention relates to an electrolytic solution containing a nonaqueous solvent; an electrolyte salt; and 10 vol% or more of a compound represented by the following formula (1) based on 100 vol% of the nonaqueous solvent, wherein R 1 , R 2 and R 3 may be the same as or different from one another, each representing a hydrogen atom, a fluorine atom, a C 1 -C 20 alkyl group, or a C 1 -C 20 fluorinated alkyl group, excluding cases where all of R 1 , R 2 , and R 3 are hydrogen atoms or fluorine atoms.