Song Yanhui, Xu Bingshe, Liao Ting, Guo Junjie, Wu Yucheng, Sun Ziqi
Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, P. R. China.
School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland, 4000, Australia.
Small. 2021 Mar;17(9):e2002240. doi: 10.1002/smll.202002240. Epub 2020 Aug 26.
2D metal (hydr)oxide nanosheets have captured increasing interest in electrocatalytic applications aroused by their high specific surface areas, enriched chemically active sites, tunable physiochemical properties, etc. In particular, the electrocatalytic reactivities of materials greatly rely on their surface electronic structures. Generally speaking, the electronic structures of catalysts can be well adjusted via controlling their morphologies, defects, and heterostructures. In this Review, the latest advances in 2D metal (hydr)oxide nanosheets are first reviewed, including the applications in electrocatalysis for the hydrogen evolution reaction, oxygen reduction reaction, and oxygen evolution reaction. Then, the electronic structure-property relationships of 2D metal (hydr)oxide nanosheets are discussed to draw a picture of enhancing the electrocatalysis performances through a series of electronic structure tuning strategies. Finally, perspectives on the current challenges and the trends for the future design of 2D metal (hydr)oxide electrocatalysts with prominent catalytic activity are outlined. It is expected that this Review can shed some light on the design of next generation electrocatalysts.
二维金属（氢）氧化物纳米片因其高比表面积、丰富的化学活性位点、可调控的物理化学性质等，在电催化应用中引起了越来越多的关注。特别是，材料的电催化活性很大程度上依赖于其表面电子结构。一般来说，催化剂的电子结构可以通过控制其形貌、缺陷和异质结构来很好地调节。在这篇综述中，首先回顾了二维金属（氢）氧化物纳米片的最新进展，包括在析氢反应、氧还原反应和析氧反应的电催化中的应用。然后，讨论了二维金属（氢）氧化物纳米片的电子结构-性能关系，以描绘通过一系列电子结构调控策略提高电催化性能的情况。最后，概述了当前二维金属（氢）氧化物电催化剂在设计具有突出催化活性方面面临的挑战和未来趋势。期望这篇综述能够为下一代电催化剂的设计提供一些启示。
