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

CoS/C microprisms with adsorption-catalysis synergistic effects were designed to be sulfur hosts in room-temperature sodium-sulfur batteries. CoS/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 after 870 cycles at 1 A g.