Study On The Performance Of Imidazole-type Ionic Liquids For Lithium Air Battery Eletrolyte

As the world continues to advance,new types of resources are emerging.Battery energy with low raw material consumption but capable of generating huge energy has attracted attention.This paper mainly studies the reaction mechanism of ionic liquids and its application in lithium-ion batteries.It is expected to fundamentally find an ionic liquid to improve the redox reaction rate of lithium air cells.From the characteristics of ionic conductivity,scanning electron microscopy,infrared spectroscopy,power and energy,the performance of different electrolyte batteries was analyzed.The results showed that:The test analysis was carried out using the composite electrolyte carbonate EC/DEC,the EC/DEC of[MOEMIM][PF₆],and the EC/DEC electrolyte of[EOEMIM][PF₆].The results show that the concentration of[MOEMIm][PF₆]is0.8 mol L^-1 and the concentration of[EOEMIm][PF₆]is 0.4 mol L^-1.The composite electrolytes were DMSO of No.4 LiTFSI,DMSO of No.V[MOEMIm][PF₆]and LiTFSI,DMSO electrolyte of No.VI[EOEMIm][PF₆]and LiTFSI.The results of initial discharge capacity at different current densities of lithium-ion batteries assembled with three electrolytes showed that the initial discharge specific capacity of electrolyte No.V and No.VI electrolyte was better than that of electrolyte No.IV,indicating that the ionic liquid was in dimethyl sulfone solution.The conduction of lithium ions has a good promoting effect.When the current density is less than or equal to 0.13 mA cm^-2 and greater than0.025 mA cm^-2,the initial discharge specific capacity of the V electrolyte is better than that of the VI electrolyte,and the maximum specific capacity is 4631.4 mAh g^-1,indicating that the electrolyte No.The methyl short-chain imidazolium ionic liquid synergistically with the dimethyl sulfoxide solution significantly increases the specific capacity of the lithium air battery and exhibits better electrochemical performance.