Amorphous S-rich S 1−x Se x /C (x ≤ 0.1) composites promise better lithium–sulfur batteries in a carbonate-based electrolyte

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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−x Se x /C ( x ≤ 0.1) composites.