In situ sulfur deposition route to obtain sulfur–carbon composite cathodes for lithium–sulfur batteries

Abstract

Sulfur–carbon composites were prepared by an<italic>in situ</italic>sulfur deposition route developed for the heterogeneous nucleation of sulfur into nanopores of conductive carbon black (CCB) by fumigation of Na₂S₄/CCB powder with HCl. The sulfur–carbon composites demonstrate enhanced reversible capacity and stable cycle performance.