Electrochemical Characterization of Lithium Polyelectrolyte Based on Ionic Liquid

Five novel lithium polyelectrolyte-ionic liquid systems, using poly (lithium 2-acrylamido-2-methylpropanesulfonate; PAMPSLi) were prepared and their electrochemical properties were measured. The ionic conductivity of the PAMPSLi/1-ethyl-3-methylimidazolium tricyano methanide (emImTCM)system was exhibited high conductivity (1.28 �� 10���3 S/cm���1). The high conductivity and low viscosityof PAMPSLi/emImTCM system is due to the high flexibility of imidazolium cation and dissociationof lithium cation from the polymer chains. The PAMPSLi/N,N-dimethyl-N-propyl-Nbutylammoniumtricyanomethanide (N1134TCM) and PAMPSLi/N, N-dimethyl-N-propyl-N-butylammoniumdicyanamide (N1134DCA) systems showed fairly high conductivity (6.3 �� 10���4 S/cm���1,6.0 �� 10���4 S/cm���1). PAMPSLi/Trihexyl (tetradecyl) phosphonium bis (trifluoromethane sulfonyl)amide (P66614TFSA) exhibited low conductivity (2.22 �� 10���5 Scm���1) and thermally stable over 400���