Dielectric studies of designed novel sodium-based polymer electrolyte with the effect of adding amino acid

Amino acid added sodium ion-conducting Polyvinyl Alcohol (PVA), Polyvinyl Pyrrolidine (PVP) blend polymers are sythesised as thick films using solvent casting method. Prepared films are subjected to its characterization through FTIR, XRD and dielectric analysis. The electrical conductivity properties of SPEs are done for various frequencies and temperatures through an AC dielectric analysis. The ionic conductivity of 6.03 x 10(-5) S/cm has been obtained as maximum for the higher concentration of aminoacid in blend polymer at room temperature. The way of increasing electrical conductivity due to temperature seems to obey the Arrhenius behaviour. The magnitude of the electric modulus peak has been observed for temperature variation and suggested the multiplicity phenomena in relaxation. Relaxation-activation energies calculated from electric modulus and tangent analysis are found to be same. From the cyclic voltammetry analysis, the electrochemical performances are observed. The fabricated electrochemical cell shows the potential window in the range of 2.16 V.

Automated summary

The study synthesized amino acid added sodium ion-conducting Polyvinyl Alcohol (PVA), Polyvinyl Pyrrolidine (PVP) blend polymers and characterized their properties through various experiments and analysis methods. The results showed that the concentration of amino acids significantly influenced the electrical conductivity, and the electrical conductivity increased with temperature following Arrhenius behavior, with good electrochemical performance.