Characterisation of plasticised PVDF–HFP polymer electrolytes

• Main Authors: Mohd. Noor, Mazni, Careem, M. A., Majid, Siti Rohana, Arof, Abdul Kariem
• Format: Article
• Language: English
• Published: Maney Publishing 2011
• Subjects: TS Manufactures
• Online Access: http://irep.iium.edu.my/18873/1/Characterisation_of_plasticised_PVDF-HFP_polymer_electrolytes.pdf; http://irep.iium.edu.my/18873/; http://www.ingentaconnect.com/content/maney/mri/2011/00000015/A00201s2/art00039
• Institution: Universiti Islam Antarabangsa Malaysia

This study focuses on the preparation and characterisation of sodium ion conducting polymer electrolytes. Poly(vinylidenefluoride-co-hexafluoropropylene) has been used as the host matrix and hydrated sodium sulphide (Na2S.9H2O) salt as the source of charge carriers in the polymer electrolyte system. To the highest conducting polymer–salt electrolyte, different concentrations of equal weight of propylene carbonate and diethyl carbonate mixture have been added, and the electrolytes have been characterised by X-ray diffraction, Fourier transform infrared spectrometry, scanning electron microscopy and electrochemical impedance spectroscopy. The room temperature ionic conductivity of 1?3461024 S cm21 for the unplasticised electrolyte with a composition of 65 wt-% poly(vinylidenefluoride-co-hexafluoropropylene)–35 wt-%Na2S increased to 3?4961024 S cm21 when 30 wt-% propylene carbonate/diethyl carbonate (w/w51) plasticisers were added.