POLYACETYLENE-BASED LAYER-COMPOSITE ELECTRODE

Readily cycled layer-composite electrodes were obtained by chemical po lymerization of acetylene on AN-4 aluminum foil using modified polymer ization catalysts containing polyisobutylaluminoxane with a molecular mass of 900 as the reducing agent. During cycling of these electrodes between potentials of 2 and 0 V (against a lithium reference electrode ) in LiClO4 or LiBF4 solutions in propylene carbonate, the polyacetyle ne film functions as an ion-conducting membrane (solid electrolyte) fo r lithium ions forming, upon discharge, the beta-phase of Li(x)Al allo y on the Al substrate, which yields much higher electrode capacities.