Gallate-MOF derived CoS2/C composites as an accelerated catalyst for room-temperature sodium–sulfur batteries

Abstract

CoS₂/C microprisms with adsorption–catalysis synergistic effects were designed to be sulfur hosts in room-temperature sodium–sulfur batteries. CoS₂/C can act as a polysulfide mediator to inhibit the shuttle effect and as a catalyst to accelerate polysulfide redox kinetics, achieving enhanced capabilities of 623 mA h g⁻¹ after 870 cycles at 1 A g⁻¹.