论文题目：Crystalline Multi-Metallic Compounds as Host Materials in Cathode for Lithium–Sulfur Batteries

论文作者：Yicheng Jiang, Hafiz Muhammad Umair Arshad, Haojie Li, Sheng Liu, Guoran Li*, Xueping Gao

发表期刊：Small, 17(22), 2005332, 2021    

Abstract： 

Lithium-sulfur (Li-S) battery is one of the most promising  next-generation rechargeable batteries. Lots of fundamental research has  been done for the problems during cycling like capacity fading and  columbic efficiency reducing owing to severe diffusion and migration of  polysulfide intermediates. In the early stage, a wide variety of carbon  materials are used as host materials for sulfur to enhance electrical  conductivity and adsorb soluble polysulfides. Beyond carbon materials,  metal based polar compounds are introduced as host materials for sulfur  because of their strong catalytic activity and adsorption ability to  suppress the shuttle effect. In addition, relatively high density of  metal compounds is helpful for increasing volumetric energy density of  Li-S batteries. This review focuses on crystalline multi-metal compounds  as host materials in sulfur cathodes. The multi-metal compounds involve  not only transition metal composite oxides with specific crystalline  structures, binary metal chalcogenides, double or complex salts, but  also the metal compounds doped or partially substituted by other metal  ions. Generally, for the multi-metal compounds, microstructure and  morphologies in micro-nano scale are very significant for mass transfer  in electrodes; moreover, adsorption and catalytic ability for  polysulfides make fast kinetics in the electrode processes.