Effect of Ligand Structure on Li-Ion Insertion Kinetics in Ether-Based Solvate Ionic Liquids

Abstract The charge-transfer kinetics at the interface between LiMn2O4 thin-film electrodes and ether-based concentrated electrolytes were studied. The [Li(triglyme)1][N(SO2CF3)2] electrolyte exhibited the highest charge-transfer resistance and activation energy barrier compared to monoglyme and tetrahydrofuran-based concentrated electrolytes. Li salt concentration and viscosity are the primary factors affecting the electrochemical reaction kinetics.