He Lei, Zhuang Haizheng, Fan Qi, Yu Ping, Wang Shengchao, Pang Yifan, Chen Ke, Liang Kun
School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China.
Zhejiang Key Laboratory of Data-Driven High-Safety Energy Materials and Applications, Ningbo Key Laboratory of Special Energy Materials and Chemistry, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
Mater Horiz. 2024 Sep 16;11(18):4239-4255. doi: 10.1039/d4mh00845f.
MXenes, a novel class of two-dimensional materials, have garnered significant attention for their promising electrocatalytic properties in various energy conversion applications such as water splitting, fuel cells, metal-air batteries, and nitrogen reduction reactions. Their excellent electrical conductivity, high specific surface area, and versatile surface chemistry enable exceptional catalytic performance. This review highlights recent advancements in the design and application strategies of MXenes as electrocatalysts, focusing on key reactions including hydrogen evolution reaction (HER), oxygen evolution reaction (OER), oxygen reduction reaction (ORR), and nitrogen reduction reaction (NRR). We discuss the tunability of MXenes' layered structures and surface properties through surface modification, MXene lattice substitution, defect and morphology engineering, and heterostructure construction. Despite the considerable progress, MXenes face challenges such as restacking during catalysis, stability issues, and difficulties in large-scale production. Addressing these challenges through innovative engineering approaches and advancing industrial synthesis techniques is crucial for the broader application of MXene-based materials. Our review underscores the potential of MXenes in transforming electrocatalytic processes and highlights future research directions to optimize their catalytic efficiency and stability.
MXenes是一类新型二维材料，因其在诸如水分解、燃料电池、金属空气电池和氮还原反应等各种能量转换应用中具有前景广阔的电催化性能而备受关注。它们优异的导电性、高比表面积和多样的表面化学性质使其具备卓越的催化性能。本综述重点介绍了MXenes作为电催化剂在设计和应用策略方面的最新进展，聚焦于包括析氢反应（HER）、析氧反应（OER）、氧还原反应（ORR）和氮还原反应（NRR）在内的关键反应。我们讨论了通过表面改性、MXene晶格取代、缺陷与形貌工程以及异质结构构建来调控MXenes层状结构和表面性质的方法。尽管取得了显著进展，但MXenes仍面临催化过程中的重新堆叠、稳定性问题以及大规模生产困难等挑战。通过创新的工程方法应对这些挑战并推进工业合成技术，对于基于MXene的材料的更广泛应用至关重要。我们的综述强调了MXenes在变革电催化过程中的潜力，并突出了优化其催化效率和稳定性的未来研究方向。
