Electrolyte, and electrochemical device and electronic device using same

Abstract

The present application relates to an electrolyte, and an electrochemical device and an electronic device using the same. Specifically, the invention provides the electrolyte which is characterized by comprising a compound A and a compound B. The compound A comprises at least one of dimethyl carbonate, methyl ethyl carbonate, diethyl carbonate, propylene carbonate, propyl propionate, ethyl acetate, ethyl propionate, propyl acetate, methyl acetate, methyl propyl carbonate, methyl propionate, methyl butyrate, methyl pivalate, gamma-butyrolactone, sulfolane, ethyl-propyl ether, ethylene glycol dimethyl ether, 1, 3-dioxane or 1, 4-dioxane; and the compound B comprises a compound A substituted by one or more fluorine atoms. The electrolyte provided by the invention is beneficial to improving the high-temperature circulation or storage performance of the electrochemical device.

Description

technical field [0001] The present application relates to the field of energy storage, in particular to an electrolyte and an electrochemical device and an electronic device using it. Background technique [0002] Electrochemical devices (e.g., lithium-ion batteries) have attracted extensive attention and are widely used due to their high energy density, low maintenance, relatively low self-discharge, long cycle life, no memory effect, stable operating voltage, and environmental friendliness. In portable electronic equipment (including mobile phones, notebooks and cameras and other electronic products), power tools and electric vehicles and other fields. However, with the rapid development of technology and the diversity of market demands, people have put forward higher requirements for power supplies of electronic products, such as thinner, lighter, more diverse shapes, higher power and higher battery life ability etc. When these requirements are met, the cycle performanc...

AI Technical Summary

Problems solved by technology

When these requirements are met, the cycle performance of the battery cell and the expansion performance of the battery cell during the cycle are usually sacrificed at the same time. At the same time, the temperature rise of the battery cell under high power may be too high, resulting in further deterioration of the performance of the battery cell.

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