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Polyvinyl alcohol (PVA) based proton-conducting solid polymer electrolyte was prepared with a high salt concentration of ammonium nitrate (NH 4 NO 3 ) by the technique of solvent casting. From the X-ray diffraction studies, the semicrystalline nature of PVA with the inclusion of NH 4 NO 3 was studied. XRD analysis indicates that the highest ion conductive sample exhibits the minimum crystalline nature. The decreasing trend of Jonscher-exponent with temperature rise reveals that the present system is insured by the correlated barrier hopping (CBH) model. The maximum room temperature conductivity was found to be 5.17 × 10 -5 S/cm for PVA loaded 30 wt.% of NH 4 NO 3 . The ionic transport of the proton-conducting solid polymer electrolyte was studied at the temperature range of 303-353 K. The conductivity-temperature relationship of the systems was analyzed using both the Arrhenius and Vogel-Tammann-Fulcher (VTF) models to explain the ionic hopping mechanism for the system.

membranes

Effect of High Ammonium Salt Concentration and Temperature on the Structure, Morphology, and Ionic Conductivity of Proton-Conductor Solid Polymer Electrolytes Based PVA