过渡金属硫化物镁离子电池正极材料研究进展

镁离子电池作为高电压、高能量可充式电池的典范，已成为储能领域的科研重点和市场热点，开发可逆循环性好、与电解液良好兼容的正极活性材料是提升镁离子电池综合性能的关键。经研究发现,过渡金属硫化物(TMDCs)更加有利于镁离子在分子层间的嵌入和脱出，展现出较好的储镁能力。在介绍镁离子电池工作原理及关键材料的基础上，对近年来有关具有层状结构的MoS2和TiS2、块状堆积结构的谢弗雷尔(Chevrel)相以及其他过渡金属硫化物在镁离子电池正极材料方面的应用研究进行了梳理和总结，并对存在的问题和今后的研究重点以及发展趋势进行了阐述，希望能对今后有关提升镁离子电池综合性能研究起到一定的借鉴作用。

Research progress of transition metal sulfides as cathode #br# materials for magnesium ion batteries

As a model of high voltage and high energy rechargeable batteries, magnesium ion batteries have become the focus of scientific research and market in the field of energy storage. Developing cathode active materials with good reversible cycle and good compatibility with electrolyte is the key to improve the comprehensive performance of magnesium ion batteries. It has been found that transition metal sulfides (TMDCs) are more conducive to the intercalation and extraction of magnesium ions between molecular layers, and exhibit better magnesium storage capacity. On the basis of introducing the working principle and key materials of magnesium ion batteries, the application of several two dimensional layered transition metal sulfides, including MoS2 and TiS2 with a layered structure, Chevrel phase with bulk stacking structure and other transition metal sulfides in cathode materials of magnesium ion batteries in recent years were reviewed and summarized. The existing problems, future research emphasis and development trends were expounded, which hope to be able to provide some reference for future research on improving the comprehensive performance of magnesium ion batteries.