NEW CONDUCTING POLYMER NETWORKS

These new polymer networks are based on cross-linked polyethers. The c ross-link reaction is carried out by reaction of a diglycidyl compound with a polyether having two terminal primary amine groups. Ionic cond uctivity depends on the level of cross-linking, the salt concentration and the nature of the polyether. At room temperature, the best obtain ed conductivity exceeds 4 X 10(-5) S/CM. Mechanical properties are goo d. These polymer electrolytes are completely amorphous and stable up t o 250-degrees-C. The measured glass-transition temperature is close to -56-degrees-C. These networks are also used to synthesize hybrid elec trolytes which include a liquid polymer or a high dielectric constant solvent. The conductivity of these electrolytes is close to organic li quid electrolytes.