Abstract
The ZnO filler has been introduced into a solid polymeric electrolyte of polyvinyl chloride (PVC)–ZnO–LiClO4, replacing costly organic filler for conductivity improvement. Ionic conductivity of PVC–ZnO–LiClO4 as a function of ZnO concentration and temperature has been studied. The electrolyte samples were prepared by solution casting technique. The ionic conductivity was measured using impedance spectroscopy technique. It was observed that the conductivity of the electrolyte varies with ZnO concentration and temperature. The temperature dependence on the conductivity of electrolyte was modelled by Arrhenius and Vogel–Tammann–Fulcher equations, respectively. The temperature dependence on the conductivity does not fit in both models. The highest room temperature conductivity of the electrolyte of 3.7 × 10−7 Scm−1 was obtained at 20% by weight of ZnO and that without ZnO filler was found to be 8.8 × 10−10 Scm−1. The conductivity has been improved by 420 times when the ZnO filler was introduced into the PVC–LiClO4 electrolyte system. It was also found that the glass transition temperature of the electrolyte PVC–ZnO–LiClO4 is about the same as PVC–LiClO4. The increase in conductivity of the electrolyte with the ZnO filler was explained in terms of its surface morphology.
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Acknowledgement
The author is very thankful to the School of Food Technology and Chemical Sciences, Faculty of Science and Technology, UKM for sample preparation and characterisation. This work was funded by UNITEN under the internal grant no. J510010250.
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Rahman, M.Y.A., Ahmad, A. & Wahab, S.A. Electrical properties of a solid polymeric electrolyte of PVC–ZnO–LiClO4 . Ionics 15, 221–225 (2009). https://doi.org/10.1007/s11581-008-0262-8
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DOI: https://doi.org/10.1007/s11581-008-0262-8