Composite Polymer Electrolyte Based On PEO/Pvdf-HFP With CNT For Lithium Battery Applications

In the present study PEO and PVdF-HFP blend based composite polymer electrolytes (CPEs) has been prepared by using Multi Walled Carbon Nanotube (MWCNT), in order to examine the filler addition effect on the electrochemical properties. The complexed nanocomposite polymer electrolytes were obtained in the form of dimensionally stable and free standing -films by using solution castin2 technique. The electrochemical properties of CPEs were measured by the AC impedance method. From the ionic conductivity results, the CPE containing MWCNT 2w -t% showed the highest ionic conductivity with an excellent thermal stability at room temperature. The dielectric loss curves for the sample 6.25wt% PEO: 18.75 wt% PVdF-HFP: 2wt% MWCNT reveal the low frequency beta relaxation peak pronounced at high temperature, and it may caused by side group dipoles.