Ge Riyue, Huo Juanjuan, Sun Mingjie, Zhu Mingyuan, Li Ying, Chou Shulei, Li Wenxian
Institute of Materials, School of Materials Science and Engineering/Institute for Sustainable Energy, Shanghai University, Shanghai, 200444, China.
School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China.
Small. 2021 Mar;17(9):e1903380. doi: 10.1002/smll.201903380. Epub 2019 Sep 18.
Molybdenum carbide (Mo C)-based nanomaterials have shown competitive performances for energy conversion applications based on their unique physicochemical properties. A large surface area and proper surface atomic configuration are essential to explore potentiality of Mo C in electrochemical applications. Although considerable efforts are made on the development of advanced Mo C-based catalysts for energy conversion with high efficiency and stability, some urgent issues, such as low electronic conductivity, low catalytic efficiency, and structural instability, have to be resolved in accordance with their application environments. Surface and interface engineering have shown bright prospects to construct highly efficient Mo C-based electrocatalysts for energy conversion including the hydrogen evolution reaction, oxygen evolution reaction, nitrogen reduction reaction, and carbon dioxide reduction reaction. In this Review, the recent progresses in terms of surface and interface engineering of Mo C-based electrocatalytic materials are summarized, including the increased number of active sites by decreasing the particle size or introducing porous or hierarchical structures and surface modification by introducing heteroatom(s), defects, carbon materials, and others electronic conductive species. Finally, the challenges and prospects for energy conversion on Mo C-based nanomaterials are discussed in terms of key performance parameters for the catalytic performance.
基于碳化钼（MoC）的纳米材料因其独特的物理化学性质，在能量转换应用中展现出了具有竞争力的性能。大表面积和合适的表面原子构型对于挖掘MoC在电化学应用中的潜力至关重要。尽管人们在开发高效稳定的用于能量转换的先进MoC基催化剂方面付出了巨大努力，但根据其应用环境，仍有一些紧迫问题需要解决，比如低电子导电性、低催化效率和结构不稳定性。表面和界面工程在构建用于能量转换的高效MoC基电催化剂方面展现出了光明前景，这些能量转换反应包括析氢反应、析氧反应、氮还原反应和二氧化碳还原反应。在这篇综述中，总结了基于MoC的电催化材料在表面和界面工程方面的最新进展，包括通过减小粒径、引入多孔或分级结构来增加活性位点数量，以及通过引入杂原子、缺陷、碳材料和其他电子导电物种进行表面改性。最后，从催化性能的关键性能参数方面讨论了基于MoC的纳米材料在能量转换方面面临的挑战和前景。
