Unveiling the role of micropores in porous carbon for Li-S batteries using operando SAXS
The movement of the sulfur species of a lithium-sulfur battery cathode was directly observed through pioneering operando SAXS analysis. Micropores are a prior repository for sulfur before and after the electrochemical reaction. Mesopores are actual reaction sites for sulfur species. The separating properties of the pores were established, adding a critical insight to advanced carbon cathode material design.