ABSTRACT Alkali metal–chalcogen batteries (AMCBs) are one of the most promising next‐generation energy storage systems because of their high energy density and reasonably low cost. However, the practical application of AMCBs is severely hindered by the volume expansion of the chalcogen cathode, the shuttle effect of polychalcogenides, and unstable alkali metal anodes during cycling. Owing to MXene's remarkable chemical stability, rich surface functional groups, outstanding electrical conductivity, and superior mechanical flexibility, MXene (transition metal carbides or nitrides) and its composites have been extensively used in different battery components of AMCBs to resolve these issues. Herein, we summarize the recent advances in the design, fabrication, and application of MXene and its composites for high‐performance AMCBs. The advantages and issues of AMCBs and several typical solutions are first introduced. Subsequently, we describe the classification and synthetic methods of MXene, with a comparison of the advantages and disadvantages of these methods. Moreover, the relationships between nano/microstructures, synthetic methods of MXene‐based materials, and the electrochemical performance of MXene‐based AMCBs are systematically summarized and discussed. In addition, technologies for the advanced characterization of the reaction mechanisms of MXene‐based materials in AMCBs are also reviewed. Finally, the remaining challenges and future research directions are proposed and discussed.
Liu et al. (Wed,) studied this question.