Vibrational study of the crystalline phases in (PEO)8ZnCl2 nanocomposite electrolyte

The ability of poly(ethylene oxide) (PEO) to form crystalline complexes with a variety of salts has provided a number of novel compounds in which to examine fundamental questions of structure, coordination and transport properties. In this work we study electrolyte from polymer-salt compounds based on ZnCl2. Polymer electrolyte (PEO)8ZnCl2 has been prepared by the sol-gel procedure. Nanocomposite polymer electrolyte was formed by adding 25-nm-sized TiO2 grains during the preparation procedure. The influence of added nanosize TiO2 grains to polymer electrolyte was studied by comparative impedance and vibrational spectroscopic studies of IR and Raman measurements.