Studies on Conductivity and Dielectric Properties of PEO/PVP Nanocomposite Electrolytes for Energy Storage Device Applications


  • Mario Iliev* 1. Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee, Sofia 1784, Bulgaria. 2. Sofia University St. Kliment Ohridski, 5a James Bourchier Blvd., Sofia, Bulgaria
  • Hari Kuduru
  • Daniela Karashanova
  • Nicola Scaramuzza


Investigations on Sodium-ion conducting polymer blend electrolyte systems based on PEO/ PVP complexed with NaIO4 salt and TiO2 nano fillers were presented in this report. The complexed polymer blend electrolytes were prepared in the form of dimensionally stable and free-standing films by conventional solution cast technique. Micro Raman and XRD studies confirmed the miscibility between PEO and PVP and the complexation of the salt with PEO/PVP polymer host. TEM measurements were carried out to evaluate size & distribution of the dispersed TiO2 nanofillers. Complex impedance spectroscopy in the frequency 1 Hz – 1 MHz within the temperature range from room temperature to 343 K. Ionic conductivity of blend electrolytes increased with the increase of TiO2 nanofillers  concentration.  Electrical conductivity and dielectric properties of NaIO4 salt complexed blend PEO/ PVP/Na+ electrolytes were analysed as a function of TiO2 nanofillers concentration. 







Conference Contributions