Investigation on Oxygen Separation in the Process of Molten-Salt Electrolysis with Solid Electrolyte

The process of molten-salt electrolysis of alumina in the electrolytic cell was investigated. The electrolytic cell consists of a carbon cathode and a solid electrolyte anode used for oxygen separation. The measured decomposition voltage is 1.67v. The corrosion of solid electrolyte in molten sodium aluminofluoride was considered. Experiment result reveals that the potential difference between the inside and outside surface of the solid electrolyte pipe resists the dissolution or corrosion of solid electrolyte in molten sodium aluminofluoride under electrolytic action.