二维MXene材料在超级电容应用的研究进展

Research progress of two-dimensional MXene materialsin supercapacitors application

二维过渡金属碳/氮化物(MXene)具有类石墨烯的结构,微观上呈现片层状和多种表面基团,因此具有良好的导电性、离子传输和高亲水性能,并且成为超级电容器的理想电极材料。但MXene层与层容易坍塌、堆叠与官能团的存在,不利于作为电极材料的性能。通过热处理、离子插层和与碳复合等方法提高其电化学性能拥有巨大的应用前景。首先总结了MXene材料的制备方法,然后概述了表面改性和结构优化等对MXene超级电容器的电化学性能的影响,展望了MXene材料在超级电容器上的研究前景。

Two-dimensional transition metal carbon/nitride(MXene)has a graphene-like structure,and microscopically exhibits lamellar and various surface groups.It has good electrical conductivity,ion transport and high hydrophilic properties,and becomes ideal electrode material for supercapacitor.The MXene layer and layer,which are prone to collapse and stacking,and the presence of functional groups are detrimental to the performance as an electrode material.It would have great application prospects,if its electrochemical performance could be improved by heat treatment,ion intercalation and carbon composites.In this paper,the preparation methods of MXene materials were firstly introduced,and then the effects of surface modification and structure optimization on the electrochemical performance of MXene supercapacitors were summarized.Finally,the research prospects of MXene materials on supercapacitors were prospected.