ELECTROCHEMICAL COMPARISON OF SEVERAL CROSS-LINKED POLYETHERS

Several unsaturated polyethers have been prepared by a polycondensatio n route, from alpha, omega dihydroxy oligoethers, and cross-linked by free-radical initiation. The ionic conductivities and thermal behavior of LiTFSI/network electrolytes have been investigated and show that c onductivities depend on the nature of the solvating oligomeric blocks, the maxima corresponding to poly(oxyethylene) based networks. Oligome ric poly(oxypropylene) and poly(oxytetramethylene) blocks however prov ide a quite satisfactory conductivity level. (C) 1998 Published by Els evier Science Ltd. All rights reserved.