A STUDY OF THE IONIC-CONDUCTIVITY OF LITH IUM TRIFLATE COMPATIBLE ELECTROLYTE GELS WITH ELECTROCHROMIC SYSTEMS

Gelified electrolytes have been realised by photopolymerisation of tet ra(ethyleneglycol)diacrylate (TEG), The plasticiser is a ternary solve nt composed of ethylelenecarbonate (EC), propylenecarbonate (PC) and 2 -dimetoxyethylether (diglyme, DG), The conductivity is obtained by add ition of lithium trifluoromethane sulfonate (triflate, TL), The compos ition of the plasticiser has been optimized in order to obtain a stabl e and optically transparent material in the temperature range: -25 to 100 degrees C and a conductivity of ca 5x10(-4) S cm(-1) at 20 degrees C, All these physical properties are compatible with the use of this material in electrochromic systems.