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

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.