核壳结构金属-有机骨架及其衍生物在锂离子电池负极材料中的应用

The Application of Core-Shell MOFs and Their Derivatives as Anode Materials in Lithium-Ion Batteries

金属-有机骨架(MOFs)材料具有比表面积较大、孔径可调、制备容易、结构与功能多样性等优势,被广泛应用于电化学能源转化与储存领域。其中独特的核壳结构材料由于表面修饰的作用往往更能表现出内核与壳层之间的协同作用。本文介绍了核壳结构MOFs作为锂离子电池负极材料的发展现状,并重点综述其衍生物(多孔碳材料、金属氧化物、金属硫/硒化物以及金属/金属氧化物)的制备方法以及在锂离子电池负极中的应用。MOFs经高温煅烧或改变化学反应条件可制备出结构可调的无机电极材料并表现出更优异的电化学性能。最后总结了核壳结构MOFs材料作为锂电负极材料存在的问题和挑战,并提出可能的解决途径和未来的应用前景。

Metal-organic frameworks(MOFs)materials are widely used in the field of electrochemical energy conversion and storage,with the advantages of large specific surface area,adjustable pore size,easy preparation,structural and functional diversity.Among them,the unique core-shell materials often show more synergy between the core and shell due to the surface modification.This article introduces the development status of core-shell MOFs as anode materials for lithium-ion batteries,and focuses on the preparation methods of their derivatives(porous carbon,metal oxides,metal sulfur/selenide,metal/metal oxides)and their applications.MOFs can produce traditional inorganic electrode materials with adjustable structure and exhibit more excellent electrochemical performance by calcining at high temperature or changing the chemical reaction conditions.Finally,the problems and challenges of core-shell MOFs as anode materials for lithium-ion battery are summarized,and possible solutions and future application prospects are proposed.