Research progress of MXene based materials in the field of electrocatalysis

Electrocatalysis is the key technology of new energy storage and conversion in the future, which is mainly used in hydrogen energy industries such as hydrogen production by water electrolysis and fuel cells. MXene is a general term for two-dimensional layered transition metal carbides, nitrides and carbonitrides. It has high conductivity, large specific surface area, good charge transfer ability as well as rich and controllable surface functional groups, which has been widely used in the field of electrochemical catalysis in recent years. In this paper, the multiple structures of two-dimensional MXene are described firstly, and then the advantages of MXene based electrocatalytic materials in hydrophilicity, conductivity, ion transport and surface defects are summarized, with emphasis on the application and progress of MXene based materials in hydrogen evolution reaction (HER), oxygen evolution reaction (OER), oxygen reduction reaction (ORR) and other catalytic reactions in recent years, The relationship between MXene structure and performance is revealed. Finally, the future development prospect is summarized and prospected.