Where Ni is the number of ions of species i, and D i is the corresponding self-diffusion coefficient.This equation is valid where no ion correlations are present, but it is justifiable to use it here to obtain a rough estimate of conductivity of Li + ions for ILs. In this work, Table . > E 1 where as for [TFSI] -it follows in the order G 1 > F 1 > E 1 . The T Li increased with the increase of EC/DMC concentrations. In addition, the T Li transference is higher than T EMI , T TFSI and T FSI for higher contents of EC/DMC. Therefore, the lithium ion dynamics are relatively faster in in the EC/DMC content of IL/ content.