Amorphous S-rich S1−xSex/C (x ≤ 0.1) composites promise better lithium–sulfur batteries in a carbonate-based electrolyte

The low electrochemical utilization of S and fast capacity fading can be effectively diminished by immobilizing sulfur in porous carbon via the interaction of a small amount of selenium in S-rich S_1−xSe_x/C (x ≤ 0.1) composites.