ELECTROLYTE, ELECTROCHEMICAL DEVICE, LITHIUM ION SECONDARY BATTERY, AND MODULE

• Main Authors: YAMAUCHI, Akiyoshi, KUWAJIMA, Yoshiko, YAMAZAKI, Shigeaki, YAMAMOTO, Yoshihiro, TAKAHASHI, Kenzou, HAYASHI, Kotaro, NAKAMURA, Hisako, SUZUKI, Yuuki, YAMADA, Takaya, SHIMOOKA, Toshiharu
• Format: Patent
• Language: English; French; German
• Published: 08.09.2021
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CHEMISTRY; ELECTRICITY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The disclosure provides an electrolyte solution capable of improving the high-temperature storage characteristics and cycle characteristics of an electrochemical device. The electrolyte solution contains at least one selected from the group consisting of a compound represented by the following formula (1-1) (wherein R101is a group such as an optionally fluorinated C1-C7 alkyl group and optionally contains a substance such as O in the structure) and a compound represented by the following formula (1-2) (wherein R102and R103are (i) each individually H, F, or a group such as an optionally fluorinated C1-C7 alkyl group, or (ii) hydrocarbon groups binding to each other to form a 5-membered or 6-membered hetero ring with a nitrogen atom; and R102and R103each optionally contain a substance such as O in the structure).