二维MXenes基复合材料的制备及在电化学领域的应用研究进展

Research progress on preparation of MXenes composite and their application in electrochemistry

二维过渡金属碳化物、氮化物或碳氮化物(MXenes)因其具有超高体积比容量、金属级导电性、良好的亲水性及丰富的表面化学基团,而被广泛应用于电化学领域。由于二维材料MXenes高比例金属原子在其表面的暴露,使其很容易相变为金属氧化物并伴随二维结构的坍塌,这严重限制了MXenes自身的应用。因此,构筑MXenes基复合材料对提高MXenes的抗氧化能力和性能具有重要的意义。综述了二维材料MXenes与其他零维、一维、二维材料的可控制备及其在超级电容器、锂离子电池、钠离子电池、锂硫电池等电化学领域的最新应用研究进展。

2D transition metal carbides,nitrides or carbonitrides(MXenes)are widely used in the field of electrochemistry because of their ultra-high volume specific capacity,metal-grade conductivity,good hydrophilicity and abundant surface chemistry.Due to the exposure of the high-order metal atoms of MXenes 2D material on its surface,it is easy to phase change into metal oxides and collapse with 2D structure,which severely limits the application of MXenes itself.Therefore,the construction is of great significance for improving the oxidation resistance and performance of MXenes.The research progress on controllable preparation of MXenes 2D materials and other zerodimensional,1D and 2D materials,and their latest application in electrochemical fields such as supercapacitors,lithium ion batteries,sodium ion batteries and lithium sulfur batteries were reviewed.