Electrolyte and lithium-ion battery

Abstract

The present application provides an electrolytic solution and a lithium ion battery containing the electrolytic solution. The electrolytic solution includes an electrolyte, a solvent, and an additive, the additive includes a first additive and a second additive, and the first additive includes at least one of a cyclic siloxane additive or a cyclic silazane additive, The second additive includes methylene methanedisulfonate. The present application also provides a lithium-ion battery comprising the above electrolyte. The electrolyte can effectively improve the safety of the battery working under high temperature conditions, and at the same time 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, specifically, to an electrolyte and a battery applying the electrolyte. Background [0002] Rechargeable lithium-ion batteries have the characteristics of high energy density, no memory effect and high working voltage, which has become the preferred solution for the current power supply of new energy vehicles. The development of the new energy automobile industry has higher and higher requirements for the energy density and safety of power lithium-ion batteries, which is a great challenge for traditional lithium-ion batteries. [0003] In order to improve the cruising range of new energy vehicles, the energy density of power lithium-ion batteries must be improved, and the usual practice is to increase the working voltage of lithium-ion batteries or use high-gram capacity cathode materials. However, high operating voltages or high gram capacity of cathode active materials often imply h...

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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