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Ionic conductivity and electric relaxation in the poly(NN-dimethylacrylamide)-LiClO4 system

The poly(NN-dimethylacrylamidc)-LiClO4 system has been investigated regarding ionic conductivity and electric relaxation. This material may contain up to 29 mol% LiClO4 while still being an amorphous and transparent ionic conductor. The conductivity for this composition is of the order of 10-9 (ohm cm)-1 at room temperature while it increases to 7 ·10-7 (ohm cm)-1 at 100 °C. The activation energy according to the conductivity measurements is 1.1 eV. The system polymethylmethacrylate)-LiCF3SO3 was also investigated but only very low ionic conductivities were detected.