Aslam Muhammad Kashif, Xu Maowen
Institute for Clean energy and Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China and Key Laboratory for Advance Materials and Technologies of Clean Energies, Chongqing 400715, PR China.
Nanoscale. 2020 Aug 6;12(30):15993-16007. doi: 10.1039/d0nr04111d.
MXenes, as a new type of two-dimensional layered structure material, have attracted much attention. MXenes have high electronic conductivity, a large specific area, excellent mechanical properties and a unique layered structure and have been extensively used in energy storage, adsorption, catalysis and other fields. In recent years, Mxenes and their composite materials have been widely used in the field of secondary batteries. Although oxides, sulfides and other materials have high capacity, there are problems such as low conductivity, volume expansion in the reaction process, poor cycling stability, etc. Therefore, building composite materials with MXenes can not only improve the capacity but also enhance the electronic conductivity of the materials, effectively alleviate volume expansion in the reaction process, and achieve better electrochemical performance. This article reviews the latest research status of MXenes, the synthesis methods, properties and application of MXenes and their composite materials in sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs), briefly introduces the research background of SIBs, PIBs and MXenes, and focuses on the application research of MXene composite materials in SIBs and PIBs, including classification according to sulfide, oxide and carbon materials. Finally, the development and application prospects of MXenes and their composite materials are summarized.
MXenes作为一种新型的二维层状结构材料，已引起广泛关注。MXenes具有高电子导电性、大比表面积、优异的机械性能和独特的层状结构，已广泛应用于储能、吸附、催化等领域。近年来，MXenes及其复合材料在二次电池领域得到了广泛应用。尽管氧化物、硫化物等材料具有高容量，但存在导电性低、反应过程中体积膨胀、循环稳定性差等问题。因此，构建MXenes复合材料不仅可以提高材料的容量，还可以增强材料的电子导电性，有效缓解反应过程中的体积膨胀，实现更好的电化学性能。本文综述了MXenes的最新研究现状、MXenes及其复合材料在钠离子电池（SIBs）和钾离子电池（PIBs）中的合成方法、性能及应用，简要介绍了SIBs、PIBs和MXenes的研究背景，并重点阐述了MXene复合材料在SIBs和PIBs中的应用研究，包括按硫化物、氧化物和碳材料分类。最后，总结了MXenes及其复合材料的发展和应用前景。
