Lithium intercalation in nanostructured thin films of a mixed-valence layered vanadium oxide using an ionic liquid electrolyte

► Thin films of vanadium oxide were prepared by layer-by-layer deposition. ► Film growth were analyzed by kinetic and isothermal approaches. ► Good initial capacity were obtained in organic solvent and ionic liquid electrolytes. ► Better capacity retention was obtained in ionic liquid electrolyte.