super(13)C NMR and conductivity measurements of ethylene oxide-epychloridrine copolymer doped with LiClO sub(4)

The ethylene oxide-epychloridrine copolymer has interesting properties as an ionic conducting polymer, principally due to its low glass transition temperature (T sub(g) identical with -40 degree C). The effect of dopant concentration (LiClO sub(4)) was studied by super(13)C NMR spectra and conductivity measurements. These studies allowed us to identify the different carbon atoms in the copolymer and their interaction with lithium cations and solvent molecules. The analysis of super(13)C spectra and conductivity measurements show that the solvent participates of the solid electrolyte, modifying the charge transport process by the change in the diffusion coefficient.