Nonaqueous liquid electrolyte system based dimethyl sulfoxide DMSO and magnesium bromide
(MgBr2) is synthesized via ‘Solvent-in-Salt’ method for the application in magnesium battery.
Optimized composition of MgBr2/DMSO electrolyte exhibits high ionic conductivity of
102 S/cm at ambient temperature. This study discusses different concentrations from 0 to
5.4Mof magnesium salt, representing low, intermediate and high concentrations of magnesium
salt which are examined in frequency dependence conductivity studies. The temperature dependent
conductivity measurements have also been carried out to compute activation energy (Ea)
by least square linear fitting of Arrhenius plot: ‘logr  1/T. The transport number of Mg2+
ion determined by means of a combination of d.c. and a.c. techniques is 0.7. A prototype cell
was constructed using nonaqueous liquid electrolyte with Mg anode and graphite cathode. The
Mg/graphite cell shows promising cycling.