Electrochemical Codeposition of Mg–Li Alloys from a Molten KCl–LiCl–MgCl2 System

This work presents a novel study on electrochemical codeposition of Mg–Li alloys on molybdenum in KCl–LiCl (50:50 wt %) melts containing different concentrations MgCl2 at 943 K. Cyclic voltammograms showed that the underpotential deposition (UPD) of lithium on pre-deposited magnesium leads to the formation of liquid Mg–Li alloys. The codepositon of Mg and Li happens when the current intensity exceeds 0.59 A cm−2 in KCl–LiCl melts containing 5 wt % MgCl2. α, α + β, and β phases Mg–Li alloys with different lithium contents were obtained by galvanostatic electrolysis from KCl–LiCl melts with different concentrations MgCl2.