Soft matter electrolytes based on polymethylmetacrylate dispersions in lithium bis(trifluoromethanesulfonyl)imide/1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ionic liquids

摘要: Ion transport in a polymer–ionic liquid (IL) soft matter composite electrolyte is discussed here detail the context of interaction and glass transition temperature. The dispersion polymethylmetacrylate (PMMA) 1-butyl-3-methylimidazolium hexafluorophosphate (BMIPF6) bis(trifluoromethanesulfonyl)imide (BMITFSI) resulted transparent electrolytes with “jelly-like” consistency. ionic conductivity measured over range −30 °C to 60 °C was always lower than that neat BMITFSI/BMIPF6 LiTFSI-BMITFSI/LiTFSI-BMIPF6 but still very high (>1 mS/cm at 25 °C up 50 wt% PMMA). While addition LiTFSI IL does not influence Tg Tm melting temperature significantly, PMMA (especially higher contents) increase disappearance Tm. In general, profile temperature-dependent could be fitted Vogel–Tamman–Fulcher (VTF) suggesting solvent assisted ion transport. However, for concentration sharp demarcation regimes between thermally activated were observed acting as reference point transformation from one form mechanism other. Because beneficial physico-chemical properties interesting mechanism, we envisage present promising application electrochromic devices.