EFFECT OF CATALYSTS ON LITHIUM PASSIVATION IN THIONYL CHLORIDE ELECTROLYTES

The effect that various catalysts added to the electrolyte or the cath ode of lithium-thionyl chloride cells for promoting the cathodic proce ss exert on lithium anodes is studied. It is shown that, in the presen ce of platinum, the lithium anode is subjected to intense corrosion, a nd this leads to the appearance of a great voltage delay. Macrocyclic complexes activate lithium electrodes. Impedance measurements showed t hat the introduction of such complexes in the system is accompanied by changes in the passive film characteristics, and this leads to a decr ease in the corrosion fate of lithium and a noticeable reduction of th e voltage delay.