• T Uma

      Articles written in Bulletin of Materials Science

    • Characterization of plasticized PMMA-LiBF4 based solid polymer electrolytes

      S Rajendran T Uma

      More Details Abstract Fulltext PDF

      Polymer electrolyte films prepared from poly(methyl methacrylate) and LiBF4 with different concentrations of plasticizer (DBP) are described. The formation of polymer-salt complex has been confirmed by FTIR spectral studies. The temperature dependence of conductivity of polymer films seems to obey the VTF relation. Values of conductivities of the polymer complexes are presented and discussed.

    • Effect of ZrO2 on conductivity of PVC-PMMA-LiBF4-DBP polymer electrolytes

      S Rajendran T Uma

      More Details Abstract Fulltext PDF

      The preparation and characterization of composite polymer electrolytes of PVC-PMMA-LiBF4-DBP for different concentrations of ZrO2 have been investigated. FTIR studies indicate complex formation between the polymers, salt and plasticizer. The electrical conductivity values measured by a.c. impedance spectroscopy is found to depend upon the ZrO2 concentration. The temperature dependence of the conductivity of the polymer films seems to obey the VTF relation. The conductivity values are presented and results discussed.

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