1H solid state NMR studies on the proton conducting polymer electrolytes

S. Selvasekarapandian, G. Hirankumar, J. Kawamura, N. Kuwata, T. Hattori

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)

Abstract

Solid polymer electrolytes based on polyvinyl alcohol (PVA)/ammonium acetate have been prepared for different compositions by solution cast technique. The polymer electrolytes have been characterized by X-ray diffraction (XRD), DSC, conductivity studies and 1H solid state NMR. The XRD study reveals the amorphous nature of the polymer electrolyte. The maximum protonic conductivity at room temperature has been found to be 5.62 × 10- 6 S cm- 1 for 12.5 mol% salt doped electrolyte and the electrolyte obeys Arrhenius behaviour. 1H NMR study has been employed to develop a better understanding of the conduction mechanism. Variable temperature NMR has indicated that proton line width shows an exponential decrease with the increase of temperature. The NMR studies indicate that the NH4+ ion is responsible for the proton conduction and the anionic motion is also involved in the conduction process at higher temperature.

Original languageEnglish
Pages (from-to)2741-2745
Number of pages5
JournalMaterials Letters
Volume59
Issue number22
DOIs
Publication statusPublished - 2005 Sep

Keywords

  • Conductivity analysis
  • NMR analysis
  • Polyvinyl alcohol
  • Proton conductor

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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