Abstract
The present work reports development of bismuth iron oxide (BFO)-doped PVA:(NH4 CH3COO) nanocomposite gel polymer electrolyte (NCGPE) films. XRD profiles revealed enhancement in the amorphous behavior of composite gel electrolyte upon incorporation of BFO as filler particles. I-t measurements exhibit ionic charge transport. The ionic conductivity of the electrolytes has been evaluated from impedance spectroscopy, and the highest value at room temperature have been found to be 1.05 × 10−3 S cm−1 for the composite gel samples containing 0.5 wt% filler concentration. The temperature dependence of ionic conductivity exhibits a combination of Arrhenius and Vogel-Tamman-Fulcher (VTF) behavior. Charge carrier density has been also evaluated from the dielectric response of the electrolyte films. Cyclic voltammetry of the films reveals a wide electrochemical window (− 2.54 to +2.89 V) with good cyclic response to suggest its applicability for battery applications.
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