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Electromotive force measurements of the following galvanic cell were carried out at temperatures around 400~Li(1)ILiC1-KC1, Li~SIS (1) During the reduction of sulfur, different sulfides were formed, which were soluble in the LiC1-KC1 eutectic melt. The identity of the different electroactive sulfide anions could not be determined with the present choice of cell, however. Various mixtures of sulfur and Li2S were used as the cathode. With excess sulfur present, a stable emf of 2.215V at 380~ was obtained. The potential determining reaction wasWith excess Li2S present at the cathode, the measured emf was 2.130V. Addition of sulfur then increased the emf to about 2.17V, which again decreased quickly back to 2.130V when all of the sulfur had reacted. A linear temperature dependence of the emf was found. A discussion is given of the steps and equilibria involved in the reactions at the sulfur electrode of the saturated multiphase cell.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see ABSTRACT EMF measurements in cells of the type: Na(1)INa+-~"-A12031LiC1-NaC1-KC1 (eut.) JS(1)IC(s ) did not give reliable results at temperatures about 400~ Sodium ions were exchanged with lithium and potassmm ions, causing reducecl socimm 1on conductivity, internal short-circuiting, and cracking and destruction of the beta-alumina membrane. The experimental problems with this eutectic melt and also with the sulfur electrode led us to test a different tYPe of cell" Na(1)LNa+-a-