Electrolyte, electrochemical device, and electronic device

Abstract

An electrolyte, an electrochemical device and an electronic device, the electrolyte comprising a salt compound represented by the following formula 1: wherein X is S or O; r1, R2, R3 and R4 are respectively and independently selected from hydrogen, halogen, nitryl, sulfenyl, sulfonyl, aldehyde group, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C2-C10 alkynyl, substituted or unsubstituted C1-C10 alkoxy and substituted or unsubstituted C6-C10 aryl, in the formula, R1, R2, R3 and R4 are independently selected from hydrogen, halogen, nitryl, sulfenyl, sulfonyl, aldehyde, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C10 alkynyl, substituted or unsubstituted C6-C10 alkynyl, substituted or unsubstituted C6-C10 alkynyl, substituted or unsubstituted the substituent group is one of substituted or unsubstituted C3-C10 heteroaryl groups or is formed by bonding more than two groups of the substituted or unsubstituted C3-C10 heteroaryl groups; at least one of R1, R2, R3 and R4 is selected from a sulfonate anion substituent group or a borate anion substituent group; m is selected from metal elements in the IA family, the IIA family, the IIIA family, the IB family and the IIB family in the periodic table of elements. The performance such as cycling stability and high-temperature storage performance of the electrochemical device can be improved.

Description

technical field [0001] The invention belongs to the field of electrochemical devices, and in particular relates to an electrolytic solution and an electrochemical device and an electronic device using the electrolytic solution. Background technique [0002] Improving the operating voltage of electrochemical devices such as batteries is an effective way to increase their energy density. However, with the increase of operating voltage, the cycle performance and high-temperature storage performance of electrochemical devices are usually affected. Therefore, how to improve the cycle stability and high-temperature storage performance of electrochemical devices such as batteries under high voltage is a technical problem that needs to be solved. Contents of the invention [0003] The invention provides an electrolytic solution, which can effectively improve performances such as cycle stability and high-temperature storage performance of electrochemical devices such as batteries u...

AI Technical Summary

Problems solved by technology

[0002] Improving the operating voltage of electrochemical devices such as batteries is an effective way to increase their energy density. However, with the increase of operating voltage, the cycle performance and high-temperature storage performance of electrochemical devices are usually affected.

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