Electronic structure engineering of transition metal dichalcogenides for boosting hydrogen energy conversion electrocatalysts  

作　　者：Bing Hao Jingjing Guo Peizhi Liu Junjie Guo 郝兵;郭晶晶;刘培植;郭俊杰(Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China

出　　处：《Chinese Physics B》2024年第9期13-28,共16页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.U21A20174 and 52001222);the Science and Technology Innovation Talent Team Project of Shanxi Province(Grant No.202304051001010);the Key National Scientific and Technological Co-operation Projects of Shanxi Province(Grant No.202104041101008);the Natural Science Foundation of Shanxi Province(Grant No.202303021221045);the Program for the Innovative Talents of Higher Education Institutions of Shanxi(PTIT);and the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(STIP)(Grant No.2022L036).

摘　　要：Electrocatalytic water splitting for hydrogen production is an appealing strategy to reduce carbon emissions and generate renewable fuels.This promising process,however,is limited by its sluggish reaction kinetics and high-cost catalysts.The two-dimensional(2D)transition metal dichalcogenides(TMDCs)have presented great potential as electrocatalytic materials due to their tunable bandgaps,abundant defective active sites,and good chemical stability.Consequently,phase engineering,defect engineering and interface engineering have been adopted to manipulate the electronic structure of TMDCs for boosting their exceptional catalytic performance.Particularly,it is essential to clarify the local structure of catalytically active sites of TMDCs and their structural evolution in catalytic reactions using atomic resolution electron microscopy and the booming in situ technologies,which is beneficial for exploring the underlying reaction mechanism.In this review,the growth regulation,characterization,particularly atomic configurations of active sites in TMDCs are summarized.The significant role of electron microscopy in the understanding of the growth mechanism,the controlled synthesis and functional optimization of 2D TMDCs are discussed.This review will shed light on the design and synthesis of novel electrocatalysts with high performance,as well as prompt the application of advanced electron microscopy in the research of materials science.

关 键 词：TMDCs STEM hydrogen energy conversion active site identification 

分 类 号：TQ116.2[化学工程—无机化工] TQ426