过渡金属碳氮化合物(MXenes)在能量储存装置的研究进展

层状过渡金属碳化物和/或氮化物(MXenes)凭借其特有的结构和性能成为了新型储能装置电极催化剂的重要候选材料。MXenes的表达式一般为Mn+1 Xn Tx,其中“M”代表早期的过渡金属元素,“x”表示C、N或CN,而“Tx”为“-OH”、“-F”等基团,n的值一般为1,2或3。MXenes具有比表面积高、离子电导率大、亲水性好等优良特性,有利于其在离子电池、超级电容器等储能装置中应用推广。本文综述了近几年MXenes在能源储存装置中的应用及研究现状,归纳总结了MXenes的结构及能量储存机制,指出了目前研究过程中存在的短板,并对其发展方向进行展望。

Research progress of transition metal carbides and nitrides (MXenes) for energy storage

Layered transition metal carbides and/or nitrides(MXenes)becomes an important candidate of electrode catalysts for new-concept energy storage devices due to their unique properties.The expression of MXenes is generally expressed as Mn+1 Xn Tx,where“M”stands for transition metal elements,“x”represents C,N or CN,“Tx”represents the terminal groups such as-OH or-F,etc.,and n is 1,2,or 3.MXene is widely used in ion batteries,supercapacitors etc.energy storage devices,due to its high specific surface area,high ionic conductivity and excellent hydrophilicity.In this paper,the application and research progress of MXenes in the field of energy storage recently is reviewed and the structure and energy storage mechanism of MXene is summarized,the shortcomings of current research is pointed out and the research trend is prospected.