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SAXS/DSC/WAXD Study of Temperature Evolution in Nanocomposite Polymer Electrolytes with Different Nanofillers

Nanostructured polymer electrolytes are very attractive components for batteries and opto-electronic devices. The nanocomposite (PEO)8ZnCl2 polymer electrolytes were prepared from PEO and ZnCl2. Fillers of Al2O3, MgO or V2O5 nanograins were added to some samples. The influence of these filler nanograins on the morphology and ionic conductivity of the nanocomposite was simultaneously studied by small-angle X-ray scattering, wide-angle X-ray diffraction and differential scanning calorimetry in the range 20-100oC. It resulted, that the nanostructure of the polymer electrolyte (PEO)8ZnCl2 is changing during the crystalline-amorphous phase transition to an amorph highly conductive superionic phase. In samples with nanofillers, the conductivity is higher and the phase transition temperature lower than for pure (PEO)8ZnCl2, which are desirable properties for application in batteries.

SAXS/DSC/WAXD; polymer electrolytes

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