ION-TRANSPORT STUDIES IN POLYETHYLENE SUCCINATE - NH4SCN SYSTEM

A new H+ ion conducting polymer electrolyte has been developed by comp lexing NH4SCN in a polyethylene succinate matrix. XRD, IR and DTA stud ies have been carried out to understand the complexation. The values o f various transferance numbers are: total t(ion) approximate to 0.96, t(H+) approximate to 0.87, t(anion) approximate to 0.09, t(e/h) approx imate to 0.04. The complex impedance/admittance method has been used t o study the bulk conductivity as a function of composition (i.e. NH4+/ ESc ratio) temperature and relative humidity. The PESc:NH4SCN complex with NH4+/ESc approximate to 0.87 had the best conductivity (10(-4) 8 cm(-1)) at room temperature.