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Solid polymer electrolytes have been extensively studied due to wide applications in various elec- trochemical devices (1)-(3). Most of the solid polymer electrolytes consist of polymer as a host material to provide strength and good mechanical stability and an inorganic salt that supplies io- nic carriers to cause electrical conductivity. In our studies, we prepared PVA/NH4NO3 polymer electrolyte films by solution casting method. The prepared films with varied Ammonium Nitrate concentration from 0 - 20 wt% are characterized by XRD & FTIR spectroscopy. XRD results show that amorphous nature increases as the amount of the Ammonium Nitrate salt in PVA is increased. IR-spectra confirm the polymer salt complexes in the range of 3700 - 712 cm −1 . Conductance anal- ysis reveals that polymer electrolyte films containing 20 wt% of NH4NO3 exhibit the highest ionic conductivity of 1.01 × 10 −7 S/cm while pure PVA films give the lowest ionic conductivity of 2.10 × 10−11 S/cm. It was evident from this study that the increase of ionic conductivity depended on the Ammonium Nitrate salt concentration. The dielectric constant exponentially decreases with in- crease of frequency for pure PVA and NH4NO3 doped PVA film composites. The temperature de- pendent studies of AC conductivity and dielectric constant also included to understand the con- ducting property. The results obtained by these studies are reported in this work.

advances in materials physics and chemistry

Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH&amp;lt;sub&amp;gt;4&amp;lt;/sub&amp;gt;NO&amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt; Solid Polymer Electrolyte Films