Back Cover: Accelerated Multi‐step Sulfur Redox Reactions in Lithium‐Sulfur Batteries Enabled by Dual Defects in Metal‐Organic Framework‐based Catalysts (Angew. Chem. Int. Ed. 42/2023)
Xin Wang, Xiaomin Zhang, Yan Zhao, Dan Luo, Lingling Shui, Yebao Li, Ge Ma, Yaojie Zhu, Yongguang Zhang, Guofu Zhou, Aiping Yu, Zhongwei Chen
Abstract
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.