DBD plasma‐assisted coating of metal alkoxides on sulfur powder for Li–S batteries

Sulfur particles coated by activation of metal alkoxide precursors, aluminum–sulfur (Alu–S) and vanadium–sulfur (Van–S), were produced dielectric barrier discharge (DBD) plasma technology under low temperature ambient pressure conditions. We report a safe, solvent-free, low-cost, low-energy consumption coating process that is compatible for sustainable up-scaling. NMR, XPS, SEM, XRD characterization methods used to determine the chemical characteristics superior behavior Li–S cells using oxide-based sulfur materials. The composition coatings mixture different elements present in precursor. presence alumina Al2O3 within was confirmed. Multi-C rate long-term galvanostatic cycling at C/10 showed capability losses capacity fade could be highly mitigated containing materials comparison references uncoated (raw) sulfur. Electrochemical impedance spectroscopy (EIS) cyclic voltammetry (CV) confirm lower charge-transfer resistance potential hysteresis electrodes particles. Our results show electrochemical performance based on can ranked as Alu-S > Van-S Raw