Ethylene sulfite based electrolyte for non-aqueous lithium oxygen batteries

Non-aqueous lithium–oxygen（Li–O;） batteries have been considered as the superior energy storage system due to their high-energy density, however, some challenges limit the practical application of Li–O;batteries. One of them is the lack of stable electrolyte. In this communication, a novel electrolyte with ethylene sulfite（ES） used as solvent for Li–O;batteries was reported. ES solvent showed low volatility and high electrochemical stability. Without a catalyst in the air-electrode of Li–O;batteries, the batteries showed high specific capacity, good round-trip efficiency and cycling stability.