MXenes for Sulfur-Based Batteries

摘要

Sulfur-based batteries are regarded as potent candidates for next-generationhigh-energy and low-cost energy storage systems. However, sulfur-based batteriesstill face substantial obstacles on the cathode side (e.g., low conductivityand sluggish reaction kinetics of sulfur) and the anode side (e.g., dendritegrowth), severely hindering their utilization. MXenes (i.e., 2D transition metalcarbides, nitrides, and carbonitrides), as an emerging member of the 2D materialfamily, possess unique electrochemical and electronic properties, whichmake them attractive materials to enhance the performance of sulfur-basedbatteries. In this article, a comprehensive review of the research progresson using MXenes in sulfur-based batteries is provided. The basics of MXeneand sulfur-based batteries are introduced first, wherein the merits of applyingMXenes in sulfur-based batteries are discussed. Subsequently, the progress inthis field is systematically summarized in terms of the roles of MXene in sulfurbasedbatteries, including MXene as sulfur host, MXene-based composite assulfur host, MXene-based separator modification, and MXene-based advancedelectrodes. In the end, recommendations for specific future research directionsto advance the development of MXenes for sulfur-based batteries are outlined.