Abstract
Frequency-dependent conductivity and conduction relaxation in nanocomposite solid polymer electrolyte films consisting of poly(ethylene oxide) and polyvinyl pyrrolidone blend as host matrix, NaIO4 as ions dopant, and titanium dioxide (TiO2) nanoparticles of average size 10 nm, were studied. The films were characterized using measurements of complex electrical impedance spectra in the frequency range from 1 Hz to 1 MHz, at room temperature. The concentration of the salt NaIO4 was 10 wt%, the TiO2 percentage varied from 1 wt% to 5 wt%. The frequency spectra of both alternating-current (AC) conductivity and electric modulus were analyzed in order to elucidate the effect of TiO2 nanoparticles on the electrical transport properties of the examined electrolyte thin films with a thickness of 150 μm.
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