A multichannel electrochemical cell with glycerin-based liquid electrolyte

Abstract

An electrochemical cell has been developed for determining the thermodynamical activity of a component in a solid solution (alloy) depending on its concentration at a temperature of up to 150°С and atmospheric pressure. A salt solution of glycerin is used as an electrolyte. Measurements can be simultaneously performed on 10–15 different samples in the cell under identical conditions for all compositions of the solid solution studied. This is ensured by using an inert electrode being displaced from sample to sample. In this case, the comparison electrode is common and immobile, thus substantially increasing the accuracy and reliability of experimental results, since this allows one to perform repeated (check) measurements of the EMF at a constant temperature on any sample with a specified composition.