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Electrical conductivity studies on PVA/PVP-KOH alkaline solid polymer blend electrolyte

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Abstract

A series of conducting thin-film solid electrolytes based on poly (vinyl alcohol)/ poly (vinyl pyrrolidone) (PVA/PVP) polymer blend was prepared by the solution casting technique. PVA and PVP were mixed in various weight percent ratios and dissolved in 20 ml of distilled water. The samples were analyzed by using impedance spectroscopy in the frequency range between 100 Hz and 1 MHz. The PVA/PVP system with a composition of 80% PVA and 20 wt.% PVP exhibits the highest conductivity of (2.2±1.4) × 10−7 Scm−1. The highest conducting PVA/PVP blend was then further studied by adding different amounts of potassium hydroxide (KOH) ionic dopant. Water has been used as solvent to prepare PVA/PVP-KOH based alkaline solid polymer blend electrolyte films. The conductivity was enhanced to (1.5 ± 1.1) × 10−4 Scm−1 when 40 wt.% KOH was added.

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Authors and Affiliations

  1. Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Malaysia

    F. F. Hatta, M. Z. A. Yahya, A. M. M. Ali, R. H. Y. Subban & M. K. Harun

  2. School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia

    A. A. Mohamad

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  1. F. F. Hatta
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  2. M. Z. A. Yahya
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  3. A. M. M. Ali
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  4. R. H. Y. Subban
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  5. M. K. Harun
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  6. A. A. Mohamad
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Hatta, F.F., Yahya, M.Z.A., Ali, A.M.M. et al. Electrical conductivity studies on PVA/PVP-KOH alkaline solid polymer blend electrolyte. Ionics 11, 418–422 (2005). https://doi.org/10.1007/BF02430259

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