fig3

Figure 3. Ionic conductivities obtained by EIS measurements at different temperatures of cells using (A) Iongel-XX* electrolytes containing 20 mol.% LiTFSI, (B) Iongel-XX electrolytes containing 20 mol.% of a lithium salt with the same anionic group as the ILE and (C) liquid electrolytes containing 20 mol.% of a lithium salt with the same anionic group as the ILE. (D) Ionic conductivities at 60 °C versus their lithium transference number. EIS: Electrochemical impedance spectroscopy; ILE: ionic liquid electrolyte.