Conductivity and structural studies of poly(vinylidene fluoride co-hexafluoropropylene)/polyethyl methacrylate blend doped with ammonium triflate

S. Rudhziah, N. S. Mohamed, Azizan Ahmad

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Flexible free standing of Poly(vinylidene fluoride co-hexafluoropropylene)/Polyethyl methacrylate-amonium triflate electrolyte systems have been successfully prepared using solution casting technique. The prepared films were characterized using X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, impedance spectroscopy and ionic transference number measurements in order to investigate their structural, thermal, electrical and electrochemical properties. The conductivity is observed to increase with increasing ammonium triflate concentration. The film of electrolyte containing 40 wt % of salt exhibited optimum room temperature conductivity of 7.07 × 10-4 S cm-1. The increase in the conductivity is attributed to the increase in the number of ions as the salt concentration is increased. This has been proven by dielectric studies. The increase in conductivity is also attributable to the increase in the fraction of amorphous region in the electrolyte films as confirmed by X-ray diffraction and differential scanning calorimetric studies.

Original languageEnglish
Pages (from-to)421-434
Number of pages14
JournalInternational Journal of Electrochemical Science
Volume8
Issue number1
Publication statusPublished - Jan 2013

Fingerprint

Methacrylates
Ammonium Compounds
Electrolytes
Salts
X ray diffraction
Electrochemical properties
Structural properties
Differential scanning calorimetry
Casting
Electric properties
Thermodynamic properties
Spectroscopy
Ions
Scanning
Scanning electron microscopy
polyvinylidene fluoride
Temperature

Keywords

  • Arrhenius
  • Electrolyte
  • Morphology
  • Polymer
  • Thermal properties

ASJC Scopus subject areas

  • Electrochemistry

Cite this

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