MXenes as a new family of two-dimensional (2D) materials have attracted increasing attention recently because of their outstanding physical and chemical properties and versatile applications, especially in energy storage and catalysis. This review will focus on the catalytic properties of MXenes and their application in electrocatalysis. In particular, we shall systematically discuss their applications into electrical-driven hydrogen production, solar-driven hydrogen production, and nitrogen reduction. This review provides an insightful understanding on the mechanism behind the outstanding performances observed in experiments and calculations, which may guide the design of novel catalysts with high catalytic activities in electrocatalysis. Additionally, a wide range of strategies to design and fabricate new MXenes as electrocatalysts will be discussed to give potential avenues for their commercial applications. Finally, the perspective on the future development is given in the end.

作为新的二维（2D）材料家族，MXene由于其出色的物理和化学特性以及广泛的应用（尤其是在能量存储和催化方面）而受到了越来越多的关注。这项审查将侧重于MXenes的催化性能及其在电催化中的应用。特别是，我们将系统地讨论它们在电力制氢，太阳能制氢和氮还原中的应用。这篇综述提供了对在实验和计算中观察到的杰出性能背后的机理的深刻理解，这可能指导设计在电催化中具有高催化活性的新型催化剂。此外，将讨论设计和制造新的MXene作为电催化剂的各种策略，以为其商业应用提供潜在的途径。最后，最后给出了对未来发展的展望。