According to the RDFs and as previously discussed, the addition of EC/DMC solvents into [EMI][TFSI] IL creates a more structured system than the pure [EMI][TFSI] IL system in terms of first peak heights. The RDF between center-of-mass [EMI] + and [TFSI] -, which is given in Figure , shows weak but visible structure for all systems which is indicated by the distinct curve at around 2.47Å, which persists over longer distances, a phenomenom that may be ascribed to long-range Coulombic interactions between [EMI] + and [TFSI] -ions.. The height of the peak increase in the order D 1 > E 1 > F 1 > G 1 , indicating that the interactions between [EMI] + and [TFSI] -is enhanced upon increasing the content of carbonates in the mixture. Panels (a) and (b) of Figure show the RDF for solvent -solvent interaction between center-of-masses of EC -EC and DMC -DMC interactions as a function of IL/carbonate concentration. The RDF for the EC -EC interaction shows a very clear structure for all systems, which is indicated by the first peak at around 3.07 Å. The RDF for DMC -DMC interaction shows a peak at 2.47 Å. The intensity of the peak for EC -EC interaction is greater than DMC -DMC interaction. The peak heights for both EC -EC and DMC -DMC interaction show a marked increase in the order F 1 > E 1 > D 1 > C 1 with decrease in concentration of carbonates in the mixture. Further to our analysis of the RDF for the solvent-solvent interaction, we calculated the RDF between center-of-mass EC and DMC molecules as shown in Figure . We can see that the interaction between EC and DMC molecules increase in the order C 1 > E 1 > F 1 , indicating that solventsolvent interaction is enhanced at higher [EMI][TFSI] content. Table shows the CN for different solvent-solvent, solvent-ion and ion-ioninteractions. The calculated CN for the cation-anion, cation-cation and anion-anion first solvation shells increase in the order G1 > F1 > E1 > D1 with increase in the IL content. On the other hand, the CN for the solvent-solvent interactions decrease with increase in IL content (see Table ).