Abstract: Composites have a fibrous graphitic porous matrix containing mesopores with an average size of between 2 and 50 nm, and micropores with an average size of below 2 nm, and elemental sulfur placed into the pores of the porous matrix. Processes for preparing the composites include physical and chemical methods as well as mechanical methods using dry and wet. The composites are useful in electrodes for lithium-sulfur batteries.