Ag+ ion transport studies in a polyvinyl alcohol-based polymer electrolyte system |
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Authors: | G Hirankumar S Selvasekarapandian M S Bhuvaneswari R Baskaran M Vijayakumar |
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Institution: | (1) Solid State and Radiation Physics Laboratory, Department of Physics, Bharathiar University, Coimbatore, 641046, India |
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Abstract: | Thick films of pure polyvinyl alcohol and polyvinyl alcohol doped with silver nitrate with different compositions have been
prepared by solution cast technique. The FT-IR spectrum confirms the complexation process. The conductivity of the pure polyvinyl
alcohol is of the order of 10−7 Sm−1 at 90 °C, and its value increases by two orders of magnitude when doped with 20 wt% of AgNO3. The activation energy, calculated from the Arrhenius plot for all compositions of the poly vinyl alcohol doped with silver
nitrate, is between 0.24 and 0.35 eV. The migration energy for the ion in polymer electrolyte has been calculated from the
modulus spectrum, and is in good agreement with the activation energy calculated from the Arrhenius plot. The modulus spectra
indicate the non-Debye nature of the material. |
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Keywords: | Polyvinyl alcohol Modulus analysis Transport properties Polymer electrolytes Ionic conductivity |
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