Sensors for EMF measurements in molten salt electrolysis

The use of emf measurements to derive classical thermochemical data has been in use for many years. The reaction associated with electrochemical process is harnessed in a galvanic cell and energy involved measured in terms of electromotive force. The property requirements of sensor electrodes used differ for various aqueous, molten salt and solid electrolyte systems. The electrodes for molten salt electrolytes need special care for construction. This paper describes the studies carried out using an Ag/AgCl reference electrode. This electrode was used to measure the solubility of compounds in molten salt electrolytes. The results obtained using this electrode are in excellent agreement with the values from chemical analysis method.