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Vol. 29 No. 5 (2017): Vol 29 Issue 5

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Structural and Electrical Properties of Sodium Citrate Doped Poly(vinyl alcohol) Films for Electrochemical Cell Applications

https://doi.org/10.14233/ajchem.2017.20405
J. Ramesh Babu
Department of Physics, K.L. University, Vaddeswarram-522 502, India
K. Ravindhranath
Department of Chemistry, K.L. University, Vaddeswarram-522 502, India
K. Vijaya Kumar
Department of Physics, K.L. University, Vaddeswarram-522 502, India

Corresponding Author(s) : J. Ramesh Babu

jallirameshura@gmail.com

Asian Journal of Chemistry, Vol. 29 No. 5 (2017): Vol 29 Issue 5

Abstract

Poly(vinyl alcohol) (PVA) based polymer electrolyte films using sodium citrate as dopants are prepared at different compositions using solution casting technique. Structural characterization is performed using X-ray diffraction, SEM and Fourier transform infrared spectroscopic techniques. These studies reveal that the complete complexation of the citrate with PVA. The optimum percentage of sodium citrate in PVA films is found to be 10 % and more than this percentage, sodium citrate is precipitating in the matrix of PVA and more so, in the amorphous region of the composite films. Differential scanning calorimeter studies are performed to determine the glass transition and melting temperatures and subsequently the % of crystallinity of the films and it is found that the crystallinity is less for PVA film containing 10 % of sodium citrate. Electrical conductivity is found to be maximum of 1.45 × 10-4 S/cm for 10 % sodium citrate doped PVA film and in other % films, the conductivity is 5/6 orders less. The transference number studies indicate that the mobility is mainly due to ions. Adopting these polymer electrolytes in electro chemical cells, various cell parameters such as open circuit voltage, short circuit current, power density, energy density and discharge time are evaluated. The present electro chemical system developed is found to be effective, environment-friendly and economical when compared with the earlier reported electrochemical cells.

Keywords

Solid polymer electrolyte Characterization Ionic conductivity Transference number Electrochemical cell
Babu, J. R., Ravindhranath, K., & Kumar, K. V. (2017). Structural and Electrical Properties of Sodium Citrate Doped Poly(vinyl alcohol) Films for Electrochemical Cell Applications. Asian Journal of Chemistry, 29(5), 1049–1055. https://doi.org/10.14233/ajchem.2017.20405
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