AC impedance studies on proton conducting polymer electrolyte complexes (PVA+CH3COONH4)
- 216 Downloads
A proton conducting polymer electrolytes of pure polyvinyl alcohol and polyvinyl alcohol complexed with ammonium acetate having different compositions have been prepared by solution cast technique. FTIR spectrum confirms the complexation process. The conductivity of the pure polyvinyl alcohol is in the order 10−10 S/cm at ambient temperature and its value increases 104 times when complexed with 20% ammonium acetate. The Arrhenius plot for all electrolyte shows two different regions above and below the glass transition temperature. A high dielectric loss value is observed for the case of complexed PVA in comparison to pure PVA. Based on the study of relaxation spectra, it is found that the relaxation time decreases with increase in temperature and dopant concentration.
KeywordsGlass Transition Temperature Ammonium Acetate Polymer Electrolyte Polyvinyl Alcohol Proton Conducting
Unable to display preview. Download preview PDF.
- M.A. Ratner, D.F. Shriver, Chem. Rev.88, 109 (1998).Google Scholar
- R.P. Singh, P.N. Gupta, S.L. Agrawal and U.P. Singh Solid State Ionics (G. Wazari, R.A. Huggins and D.F. Shriver, Eds.) Mat. Sci. Soc., Pittsburg, 1989, p. 361.Google Scholar
- S. Petty-Weeks and A.J. Polak, Chem. Eng. News 28 (1985).Google Scholar
- T. Takahashi, Materials for Solid State Batteries; (B.V.R. Chowdari and S. Radha Krishna, Eds.) World Scientific Press, Singapore, 1986, p. 259.Google Scholar
- K.C. Gong and H.S. Cai, Mat. Res. Soc. Symp. Proc.135, 377 (1989).Google Scholar
- Y. Takahashi, J. Polymer Sci.11, 213 (1973).Google Scholar
- J.M.G. Cowie, in: Polymer Electrolytes Reviews (J.R. MacCallum, C.A. Vincent, Eds.) Vol. 1, Elsevier Applied Science, London, 1987, p. 92.Google Scholar
- J.R. MacCallum, C.A. Vicent, Polymer Electrolyte Reviews II, Elsevier Applied Science Publishers Ltd, London and New York, 1987, Ch. 2.Google Scholar