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A facile approach for the synthesis of core-shell composites composed of a commercial sulfur core and a carbon nanopowder shell with different morphologies and sizes is proposed. When these composites are used to prepare a cathode for lithiumÀ sulfur batteries, their fabricated electrode slurries show better dispersion homogeneity than that prepared through the conventional method of simply mixing sulfur and carbon nanopowders. Hence, the resulting cathodes fabricated by using these composites show superior electronic and ionic conductivity compared to that produced through the conventional method. Electrochemical assessment demonstrates that lithiumÀ sulfur batteries fabricated by using the composites show reduced self-discharge and improved capacity and maintained 100 % of the columbic efficiency. However, these improvements cannot be achieved if the sulfur crystal of the composite is considerably large, as this negatively affects the dispersion of the electrode constituents.

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