Structural and ionic conductivity studies on proton conducting polymer electrolyte based on polyvinyl alcohol |
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| Authors: | M Hema S Selvasekarapandian H Nithya A Sakunthala D Arunkumar |
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| Institution: | (1) Solid State and Radiation Physics Laboratory, Department of Physics, Bharathiar University, Coimbatore, 641 046, India;(2) Physics Division, BU-DRDO Centre for Life Sciences, Bharathiar University, Coimbatore, 641 046, India |
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| Abstract: | An attempt has been made to prepare a new proton conducting polymer electrolyte based on polyvinyl alcohol (PVA) doped with
NH4NO3 by solution casting technique. The complex formation between polymer and dissociated salt has been confirmed by X-ray diffraction
analysis. The ionic conductivity of the prepared polymer electrolyte has been found by ac impedance spectroscopic analysis.
The highest ionic conductivity has been found to be 7.5 × 10−3 Scm−1 at ambient temperature for 20 mol% NH4NO3-doped PVA with low activation energy (~0.19 eV). The temperature-dependent conductivity of the polymer electrolyte follows
an Arrhenius relationship, which shows hopping of ions in the polymer matrix. |
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| Keywords: | Proton conduction XRD ac conductivity Polyvinyl alcohol |
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