Dielectric relaxations and ion transport study of NaCMC:NaNO3 solid polymer electrolyte films

Supriya K. Shetty, Ismayil, Shreedatta Hegde, V. Ravindrachary, Ganesh Sanjeev, Rajashekhar F. Bhajantri, Saraswati P. Masti

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Na+ ion-conducting solid polymer electrolyte (SPE) of sodium salt of carboxymethyl cellulose (NaCMC) doped with sodium nitrate (NaNO3) was developed by solution casting method. FTIR technique confirmed the formation of hydrogen bonding between NO3−anion and functional groups of NaCMC. XRD study revealed the low degree of crystallinity that reduced upon doping. Impedance spectroscopy was adapted in order to analyze the conductivity and dielectric relaxation phenomena of the polymer-salt complex. FTIR deconvolution technique was employed to understand the factor that influences the ionic conductivity in SPE; concentration of mobile ions and ionic mobility both play a vital role. Ion transference number has been found out to be > 0.97 for all samples indicating that the conducting species are primarily ions. The highest ionic conductivity of ̴ 3 × 10−3 Scm−1 with the mechanical strength of 30.12 MPa was achieved for a host containing 30 wt.% NaNO3 at ambient temperature.

Original languageEnglish
Pages (from-to)2509 - 2525
Number of pages17
JournalIonics
Volume27
Issue number6
DOIs
Publication statusPublished - 06-2021

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • General Materials Science
  • General Engineering
  • General Physics and Astronomy

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