Abstract
These new polymer networks are based on cross-linked polyethers. The cross-link reaction is carried out by reaction of a diglycidyl compound with a polyether having two terminal primary amine groups. Ionic conductivity depends on the level of cross-linking, the salt concentration and the nature of the polyether. At room temperature, the best obtained conductivity exceeds 4 × 10 −5 S/cm. Mechanical properties are good. These polymer electrolytes are completely amorphous and stable up to 250 °C. The measured glass-transition temperature is close to −56 °C. These networks are also used to synthesize hybrid electrolytes which include a liquid polymer or a high dielectric constant solvent. The conductivity of these electrolytes is close to organic liquid electrolytes.
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