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      https://www.ias.ac.in/article/fulltext/boms/044/0065

    • Keywords

       

      Cornstarch:PVP:NH$_4$SCN; XRD; AC impedance; cyclic voltammetry; transference number; electrochemical cell.

    • Abstract

       

      Higher proton conducting polymer blend electrolytes (HPCPBEs) of cornstarch: poly vinyl pyrrolidone (PVP):ammonium thiocyanate (NH$_4$SCN) have been prepared by solution casting technique. Enhancement of amorphousnature of the polymer blend electrolytes have confirmed by X-ray diffraction analysis. The presence of functional groups in Fourier transform infrared spectrum shows the complexation between salt and host polymer matrix. At ambient temperature, 70 wt% NH$_4$SCN mixed composition has obtained the maximum conductivity ($1.36 \times 10^{–4}$ S cm$^{–1}$). The dielectric properties of the prepared samples have been analysed. The dielectric spectra and modulus spectra reveal the non-Debye behaviour of the polymer electrolytes. Low activation energy (0.14 eV) with regression value of 0.98 has been revealed from temperature dependence of ionic conductivity studies. Wagner’s polarization technique is used to confirm the conductivity due to the ions. Electrochemical behaviour of HPCPBE has been analysed by cyclic voltammetry. Anelectrochemical cell has fabricated using the HPCPBE and the observed open circuit voltage is 1.15 V.

    • Author Affiliations

       

      M ANANDHA JOTHI1 2 D VANITHA1 2 S ASATH BAHADUR1 3 N NALLAMUTHU1 2

      1. Department of Physics, School of Advanced Science, Kalasalingam Academy of Research and Education, Krishnankoil 626 126, India
      2. Multifunctional Materials Laboratory, International Research Centre, Kalasalingam Academy of Research and Education, Krishnankoil 626 126, India
      3. Condensed Matter Physics Laboratory, International Research Centre, Kalasalingam Academy of Research and Education, Krishnankoil 626 126, India
    • Dates

       
  • Bulletin of Materials Science | News

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