Rücktitelbild: Accelerated Multi‐step Sulfur Redox Reactions in Lithium‐Sulfur Batteries Enabled by Dual Defects in Metal‐Organic Framework‐based Catalysts (Angew. Chem. 42/2023)

The sluggish sulfur redox kinetics and shuttle effect of lithium polysulfides are recognized as the main obstacles to the practical applications of lithium–sulfur (Li-S) batteries. In their Research Article (e202306901), Dan Luo, Zhongwei Chen et al. report a novel dual-defect metal–organic framework (MOF) as a new catalyst type to achieve synergistic catalysis for the multi-step conversion reaction of lithium polysulfides. The missing linker defect and missing cluster defect significantly catalyze the sulfur reduction reaction. As a result, dual-defect MOF-based separators lead to a strongly improved electrochemical performance of Li-S batteries.