Ionic-Conduction In (Peo)Nkcuxi1+X Complexes

We introduce a new family of solid polymer electrolytes where the Cu+ cation is coordinated with an anionic ligand I-, resulting in a complex carrying at least one negative charge. In the PEOnKCuxI1+x electrolyte, potassium iodide acts as a supporting electrolyte where copper cations Cu+ are carried as CuI2- complex anions. The transport of Cu+ thus occurs via a vehicular mechanism. The Conductivity of these electrolytes is around 5 x 10(-6) OMEGA--1 cm-1 at 40-degrees-C and the transference number of copper component has been found to be 0.4.