DIELECTRIC AND CONDUCTIVITY STUDIES OF A SILVER ION CONDUCTING POLYMER ELECTROLYTE

Dielectric and conductivity studies have been performed on poly(propyl ene glycol) with a molecular weight of 4000 complexed with 0.01 to 6 m ol% AgCF3SO3. The highest conductivity value at 70 degrees C, 8 x 10(- 5) S cm(-1) was obtained for 6 mol% AgCF3SO3. The equivalent conductiv ity, Lambda, plotted against AgCF3SO3 concentration shows a:minimum an d a maximum, similar to that found in other salt-poly(propylene glycol ) complexes. The dielectric relaxation studies reveal two loss peaks: a primary peak which may be attributed to ion pairs and a secondary, l ow intensity peak only visible at low salt concentrations, that is ass umed to be due to a relaxation attributed to the polymer chain. (C) 19 98 Published by Elsevier Science Ltd. All rights reserved.