Theoretical study on fluoroethylene carbonate as an additive for the electrolyte of lithium ion batteries

Abstract

In this paper, adjusting the electrolyte composition or the use of additives has been shown to obtain different characteristics in lithium ion batteries. By improving the characteristics of one component in the electrolyte, the lithium ion battery electrolyte can be tuned to be suitable for different environments. This paper describes the theoretical research progress on fluoroethylene carbonate as an additive for the electrolyte of lithium ion batteries and also analyzes whether fluorine-containing additives, flame retardants and wetting agents can be used together to improve the performance of lithium ion batteries. Fluoro-containing additives (FEC) can improve the oxidation resistance of the electrolyte on the positive electrode, which can lead to electron transfer before vinyl carbonate (EC) and can also reduce the electrolyte at the negative electrode interface before the solvent, thus, inhibiting any further decomposition of the electrolyte.