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        Impedance spectroscopic study of biodegradable PVA/PVP doped TBAI ionic liquid polymer electrolyte

        S. Adarsh Rag,DURAISAMI DHAMODHAR-AN,M. Selvakumar,Somashekara Bhat,Shounak De,Hun-Soo Byun 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.111 No.-

        This work aims to understand the ion conduction mechanism in polymer electrolyte membranes. Polyvinyl alcohol and polyvinyl pyrrolidone are chosen as polymer matrix and tetrabutylammoniumiodideas the ionic liquid among various synthetic polymers. Four samples named A-1, A-2, A-3, andA-4 have been synthesized by various concentrations and characterized the membranes through impedancespectroscopy analysis which uncovers the conductivity features of the electrolyte. Out of the foursamples, the one with 25 wt.% ionic liquid sample shows better performance than the rest of the samples. The prepared membrane was analysed and understood various parameters such as impedance analysis,dielectric constant, dielectric loss, and electric modulus. The activation energy was calculated for thesamples A-2, A-3, and A-4, as 0.27 eV, 0.96 eV and 2.97 eV, respectively. The Arrhenius models for carriertransport have been explained to interpret the conduction mechanism in polymer membranes. The presentwork has been focused on studying the effect of tetrabutylammonium-iodide ionic liquid on polyvinylalcohol and polyvinyl pyrrolidone polymer matrix as an electrolyte membrane and thepossibility of using this as an electrolyte membrane in devices such as fuel cells, supercapacitors, andbatteries.

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