Ion conductivity of novel polyelectrolyte gels for secondary lithium-ion polymer batteries

A novel polyelectrolyte gel system, promising for application in secondary polymer lithium batteries, is presented. The gel is a copolymer of N,N-dime thylacryl amide and lithium 2-acrylamido-2-methyl-1-propane sulphonate: che mically cross-linked to form a three-dimensional network. The gel was polym erised in a solvent mixture of N,N-dimethylacetamide and ethylene carbonate . The electrochemical stability of the system was examined. The effects of the monomer composition, polyelectrolyte concentration and temperature on t he ionic conductivity were studied and are discussed. (C) 2001 Elsevier Sci ence Ltd. All rights reserved.