Graphene-wrapped sulfur-based composite cathodes: ball-milling synthesis

What is it about?

A facile ball-milling route, which can help in large-scale synthesis, is developed to prepare graphene-wrapped sulfur/carbon nanotubes composite. Electrochemical tests show that the obtained composite demonstrates high sulfur utilization and good cycle performance.

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Why is it important?

A graphene-wrapped sulfur/carbon nanotubes composite was successfully prepared via the ball-milling method. Compared to previous solution-based methods, the large-scale synthesis of a graphene-wrapped sulfur composite with high consistency can be easily achieved by this strategy. The homogeneous coating of graphene on the sulfur/carbon nanotubes composite can be observed from the SEM and TEM characterization, and it leads to a high electrochemical performance of the obtained composite.