Structural, vibrational and electrical characterization of PVA-NH4Br polymer electrolyte system

M. Hema, S. Selvasekerapandian, A. Sakunthala, D. Arunkumar, H. Nithya

Research output: Contribution to journalArticlepeer-review

157 Citations (Scopus)

Abstract

Polymer electrolyte based on PVA doped with different concentrations of NH4Br has been prepared by solution casting technique. The complexation of the prepared polymer electrolytes has been studied using X-ray diffraction (XRD) and Fourier transform infra red (FTIR) spectroscopy. The maximum ionic conductivity (5.7×10-4 S cm-1) has been obtained for 25 mol% NH4Br-doped PVA polymer electrolyte. The temperature dependence of ionic conductivity of the prepared polymer electrolytes obeys Arrhenius law. The ionic transference number of mobile ions has been estimated by dc polarization method and the results reveal that the conducting species are predominantly ions. The dielectric behavior of the polymer electrolytes has been analyzed using dielectric permittivity and electric modulus spectra.

Original languageEnglish
Pages (from-to)2740-2747
Number of pages8
JournalPhysica B: Condensed Matter
Volume403
Issue number17
DOIs
Publication statusPublished - 2008 Aug 1
Externally publishedYes

Keywords

  • FTIR
  • Ionic conductivity
  • Polymer electrolyte
  • Transference number
  • XRD

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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