Novel electrolyte for power battery

Abstract

The invention relates to the technical field of battery electrolytes, and in particular discloses a novel electrolyte for a power battery, which comprises the following raw materials in percent by weight: 8-15 percent of conductive lithium salt as a component A, 73-90 percent of organic solvent as a component B and 1-10 percent of additive as a component C. A sulphonate organic compound as the additive is added in the electrolyte of the common lithium ion battery, the addition of the sulphonate organic compound accounts for 1-10 percent of the weight of the electrolyte of the lithium ion power battery and is chemically compounded with 8-15 percent of conductive lithium and 75-90 percent of organic solvent to prepare the novel electrolyte for the power battery, which has better high-temperature circulating performance and is suitable for the power battery. A power battery especially using lithium manganese oxide as a cathode material can prevent Mn smelted at high temperature from being attracted on the surface of the cathode, thereby inhibiting the impedance rise, effectively improving the circulating periodicity and greatly prolonging the circulating service life.

Description

technical field [0001] The invention relates to the technical field of battery electrolyte, and specifically discloses a novel electrolyte for power batteries. Background technique [0002] Since the 1990s, as a new technology, the development of hybrid vehicles has been highly valued by many developed countries and regions such as the United States, Japan and Western Europe, and has achieved some significant results and progress. In 2004, my country has surpassed Germany to become the third largest automobile country in the world. It is estimated that in the next 3-5 years, my country will leap to become the second largest automobile country in the world. If no measures are taken, my country's energy problems, environmental problems, traffic Problems and health problems will be much more serious than they are now. Therefore, continuous improvement of power lithium-ion battery and electric technology will have important social and strategic significance for alleviating energ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and add one or several new additives to the existing formulation system to solve the problem of poor cycle performance of lithium-ion power batteries under high temperature conditions

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