单原子掺杂二硫化钼析氢催化的进展和展望

层状二硫化钼由于具有独特的物理化学特性, 在电化学制氢领域受到广泛关注. 二硫化钼的氢惰性表面导致其在酸性和碱性电解液中的析氢活性都比铂差. 将单原子锚定在二硫化钼中能够有效活化惰性的基面，促使其成为先进的析氢电催化剂. 本文从单原子掺杂的二硫化钼的结构出发, 探讨了单原子在提升活性方面的具体机制, 总结了关于单原子掺杂的二硫化钼的制备方法、 表征手段和最新的研究进展, 以及单原子掺杂所产生的缺陷对于活性提升的重要作用. 最后, 基于单原子掺杂二硫化钼在析氢反应中的最新进展, 总结了该领域中相关催化剂的设计思想和主要挑战.

Progress and Perspective on Molybdenum Disulfide with Single-atom Doping Toward Hydrogen Evolution

Layered molybdenum disulfide（MoS₂） has attracted much attention in electrochemical hydrogen generation due to its unique physicochemical properties. The hydrogen inert surface of MoS₂ results in the inferior hydrogen evolution reaction（HER） activity to Pt in both acid and alkaline media. Confining single atoms（SAs） on MoS₂ is a promising method to activate the basal plane， making MoS₂ an advanced HER electrocatalyst. Herein， this perspective starts with the structure of SA-MoS₂， and discusses the role of SAs for enhanced catalytic activity. Subsequently， synthesis methods， characterization techniques and recent progress of SA-MoS₂ are summarized. It highlights the importance of surface defects induced by SAs in activated basal plane to achieve high electrocatalytic performance. Finally， based on the progress of SA-MoS₂ in HER， this perspective presents general guidelines and research challenges in this promising field.