MoTe_(2)的结构调控及其电催化产氢和储能应用进展

Structural regulation of MoTe_(2) and applications in electrocatalytic hydrogen production and energy storage

开发能量转化和存储的高性能电极材料对于新能源利用和储能元件的改进至关重要.设计合成高表面积和较大层间距的二维电极材料是提高电催化活性和储能性能的有效方法.近年来,在过渡金属硫族化合物材料合成快速发展的基础上,MoTe_(2)更大的层间距和较好的导电性使其在各个领域得到了广泛的研究,其中物相工程、形貌控制和缺陷工程技术逐渐被用于提升MoTe_(2)的电催化产氢和储能性能.这篇综述对MoTe_(2)在电催化产氢以及能量存储方面的研究进展进行了总结,展示了MoTe_(2)较高的电催化产氢活性和优异的储能性能,是一种具有发展潜力的二维材料.与此同时,就该领域存在的问题和应用前景进行了展望.

The rapid development of human society economy and the excessive use of fossil energy have given rise to various and intractable problems such as resource shortage,environmental pollution and ecological deterioration.In particular,the burning of fossil fuel has produced a large amount of greenhouse gases,which lead to destructive impact on the ecology and living environment and are restricting the sustainable development of human society.Therefore,the development of electrode materials for energy conversion and storage is very crucial and indispensable.A large number of studies have shown that two-dimensional electrode materials with high specific surface area,large layer spacing and narrow band gap are excellent electrocatalytic hydrogen evolution catalysts and energy storage materials.Therefore,scientists have never stopped the exploration and research of this kind of materials.In recent years,based on the exploration of transition metal sulfur compound(TMDs)nanomaterials,researchers found that MoTe_(2)has abundant active sites,larger interlamellar spacing and good structure of many good properties such as conductivity.These features in a number of fields such as catalysis,and superconducting energy storage has been widely applied,making MoTe_(2)one of the most development potential TMDs material substance.This review mainly introduces the material structure,phase relationship,physical and chemical properties and common synthesis methods of MoTe_(2)from the aspects of interlamellar structure,lattice type and physical and chemical properties of 2 H and 1 T phase MoTe_(2),band gap and surface active sites,etc.The influence of morphology,phase,control synthesis,surface modification and composite structure of MoTe_(2)on its electrocatalytic hydrogen evolution activity and the mechanism of improving its catalytic performance were summarized in the last ten years.The research progress of MoTe_(2)as anode material in lithium-ion batteries,sodium-ion batteries and supercapacitors were summarized.In this review,the improvement of the performance of MoTe_(2)after different treatment methods was discussed from the aspects of electrocatalytic hydrogen evolution and energy storage,and the existing problems in this field were discussed and summarized,as well as the development of MoTe_(2)was prospected.We believe that the development of the control of MoTe_(2)nanostructure and the realization of its directional regulation are crucial to the application prospect of MoTe_(2).Based on the above optimization,the physical and chemical structure of two-dimensional transition metal dichalcogenides can also be effectively improved,which has certain reference significance,and the optimization of the structure and properties of materials can be realized.