MXene and MBene as efficient catalysts for energy conversion: roles of surface, edge and interface

MXenes and MBenes emerge from a large family of two-dimensional (2D) transition metal carbides, nitrides, carbonitrides, and borides and have drawn tremendous attention in recent years. They possess diverse elemental compositions, surface terminations and geometrical structures, and exhibit many fascinating physical and chemical properties. Specifically, these 2D compounds hold great promise for renewable energy applications owing to their superior electrical conductivity, high hydrophility, rich surface chemistry, and outstanding stability. In this perspective, we present a brief overview about the catalytic properties of MXenes, MBenes and MXene based heterostructures for typical electrochemical reactions. The roles of surface, edge and interface of these 2D nanostructures in energy conversion are highlighted from a theoretical point of view. Challenges and outlooks for future research are also outlined.

Automated summary

MXenes and MBenes, as part of a two-dimensional transition metal carbides family, have attracted tremendous attention in recent years due to their diverse chemical properties in renewable energy applications. They exhibit superior electrical conductivity, high hydrophility, and outstanding stability, showing promising prospects for applications. The roles of the surface, edge, and interface of these two-dimensional nanostructures in energy conversion have been discussed.