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Effect of Reduction of Silver Ion on Electrical Modulus of Solid Polymer Electrolyte Based on Chitosan-silver Triflate Electrolyte Membrane

Hawar Hawar, Shvan Mhamad, Ali Rostam and Shvan Mhamad

Utilizing impedance spectroscopy, Chitosan (AgCF3SO3 from 303 to 393 K) based solid polymer electrolyte was investigated for their electric modulus properties. The association and dissociation of M" peak spectra's shift with ion determines frequency. With several tests on the highest conductivity sample, the lowest conductivity relaxation time (τσ) for it was found. The high capacitivity of the material is shown by the electrical modulus of the real part. A non-Debye type relaxation is predicted by the asymmetric peak of electric modulus's imaginary part (M"). Utilizing Argand plot, a deformed arc for the relaxation times distribution is demonstrated. Silver nanoparticles formed from silver ions causes a rise in the values of M' and M" above 358k. Silver nanoparticles’ absorption of ultravioletvisible (UV-vis) and complex impedance plots in chitosan-silver triflate solid electrolyte is temperature dependent. Transmission electron microscopy (TEM) was the technique used for confirmation of silver nanoparticles formation. The dynamical relaxation process for a particular composition is proven by the scaling behavior of M" spectra to be independent of temperature. The conductivity relaxation is shown by β exponent to be highly non-exponential.