Performance of a magnesium-lithium alloy as an anode for magnesium batteries

In this work, we describe an evaluation of an Mg-Li alloy (Li: 13 wt %) for possible use in magnesium primary reserve batteries. Higher OCP for the Mg-Li alloy have been observed in 2 M MgCl2 and MgBr2 electrolyte. The corrosion rate of the Mg-Li alloy is found to be in the order: MgCl2 < Mg(COOCH3)2 < MgSO4 < MgBrz < Mg(ClO4)2. Mg-Li alloys exhibit higher (81 %) anodic efficiencies even when the current density is increased to 8.6 mA cm-2. It has been observed that Mg-Li/MgCl2/CuO cells offer higher operating voltage and capacity than those with the conventionally used Mg-Al alloy.