A soluble single atom catalyst promotes lithium polysulfide conversion in lithium sulfur batteries

CoPcCl is used as a catalytic electrolyte additive for lithium sulfur batteries under the guidance of theoretical calculations. The electrolyte additive strategy is easier to realize and more effective compared with the fabrication of catalytic host materials. Adding CoPcCl in the electrolyte enhanced the sulfur utilization remarkably. CoPcCl catalyzed the Li 2 S decomposition and enhanced the sulfur utilization remarkably.