Electrolyte and lithium ion battery

Abstract

The present application provides an electrolyte and a lithium ion battery containing the electrolyte. The electrolyte comprises an electrolyte, a solvent and additives. The additives include a first additive and a second additive. The first additive comprises at least one of a cyclic siloxane additive or a cyclic silazane additive, and the second additive comprises methyl methane disulfonate. Thepresent application also provides the lithium ion battery containing the electrolyte. The electrolyte can effectively improve the safety problem of the battery working under the high temperature condition and also reduce the DC discharge resistance of the lithium ion battery.

Description

technical field [0001] The present application relates to the field of energy storage materials, in particular, to an electrolyte and a battery using the electrolyte. Background technique [0002] Rechargeable lithium-ion batteries have the characteristics of high energy density, no memory effect, and high operating voltage, and have become the preferred solution for the power supply of new energy vehicles. The development of the new energy vehicle industry has higher and higher requirements on the energy density and safety of power lithium-ion batteries, which is a great challenge to traditional lithium-ion batteries. [0003] In order to improve the cruising range of new energy vehicles, the energy density of the power lithium-ion battery must be increased. The usual method is to increase the working voltage of the lithium-ion battery or use a positive electrode material with a high gram capacity. However, high operating voltage or high gram capacity of positive electrode...

AI Technical Summary

Problems solved by technology

If the heat released by the reaction cannot be dissipated in time, it will lead to a series of safety problems such as battery inflation and leakage, and even combustion and explosion.

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