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

• Published in: Ionics 2021-09, Vol.27 (9), p.3919-3932
• Main Authors: Sundaramahalingam, K., Jayanthi, S., Vanitha, D., Nallamuthu, N.
• Format: Article
• Language: English
• Subjects: Amino acids; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; Dielectric properties; Electrical resistivity; Electrochemical cells; Electrochemistry; Energy Storage; Ion currents; Optical and Electronic Materials; Original Paper; Polymers; Polyvinyl alcohol; Renewable and Green Energy; Room temperature; Sodium; Temperature; Thermal analysis; Thick films
• ISSN: 0947-7047; 1862-0760
• DOI: 10.1007/s11581-021-04116-8

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 × 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.