Electrochemical Reduction of Lithium Metavanadate in Lithium Chloride‐Potassium Chloride Eutectic

Abstract

Two reduction steps were observed in the electrochemical reduction of LiVO3 in molten normalLiCl‐normalKCl eutectic. The first reduction step produces an insoluble product which undergoes a chemical reaction with LiVO3 to form insoluble LiV2O5 and Li3VO4 . The second reduction step produces insoluble LiVO2 and Li3VO4 . LiVO2 undergoes a number of chemical reactions with LiVO3 to produce a mixture of solid compounds, one of which is LiV2O4 . VO2 was found to react with LiVO3 to produce LiV2O5 . The addition of oxide ion to the eutectic containing insoluble VO2 resulted in the disproportionation of VO2 to produce either Li3VO4 and V2O3 or Li3VO4 and LiVO2 , depending on the oxide concentration.