Probing the effect of ethylene carbonate on optimizing the halogen-free electrolyte performance for Mg sulfur batteries.

Magnesium metal batteries attract great attention for their high volumetric capacity and safety as a post-lithium choice. The strategy of adding organic plasticizer may bring new insights into designing halogen-free electrolytes for the further development of magnesium-sulfur batteries. The high charge density of Mg results in a high desolvation barrier and low interfacial Mg transfer kinetics due to the strong coulombic interactions of Mg ions with anions and solvent molecules.