IONIC-CONDUCTIVITY IN POLY(DIETHYLENE GLYCOL-CARBONATE) SODIUM TRIFLATE COMPLEXES/

New polymer electrolytes were synthesized and characterized based on a new polymer host. The motivation was to produce a host polymer with a high dielectric constant which should reduce ion clustering with an a ttendant increased conductivity. The new polymer host, poly(diethylene glycol carbonate) and its sodium triflate complexes were characterize d by thermal analysis and AC impedance measurements. The polycarbonate backbone appears less flexible than the polyether hosts as evidenced by the higher glass transition temperatures. The conductivity for the sodium triflate complexes was measured as similar to 10(-5) S cm(-1) a t 55 degrees C and the dielectric constant of the host polymer was fou nd to be 3.6 at 3 GHz. The low conductivity is attributed to rigidity of the polycarbonate.