In the field of renewable energy, the core of advanced materials lies in the efficiency for the electrocatalytic and photoelectrochemical overall water splitting. However, in hydrogen evolution reaction (HER), there is a lack of electrocatalysts based transition metals of high-performance and natural-abundance, and thus there is a formidable challenge for large-scale application. Therefore, molybdenum carbide (Mo₂C) based catalysts and their composites are regarded as a most promising and replacement noble metal electrocatalyst for the HER in different media about all pH. In this work, the preparation of ultra-fine Mo₂C nanoparticles, which uniformly implant into hollow N-doped carbon polyhedrons (Mo₂[email protected]) by adopting MOF-assisted self-sacrifice template approach, is proposed. Mo₂[email protected] showcases suitable catalytic activity and feasible stability toward HER in both media such as acidic and alkaline solutions. The as-prepared Mo₂[email protected] exhibits effective and fast response from the HER region with nearly 0.0 V onset overpotentials, only requiring 89 mV (0.5 M H₂SO₄ media) and 87 mV (1.0 M KOH media) overpotential to reach 10 mA cm⁻² and cycling stability (<5% performance loss after 10 h). Such distinctive activity of HER is mainly imputed to the poly-dispersion of the ultra-fine Mo₂C nanoparticles and its synergistic contribution of rich nitrogen doping, unique hollow morphology, and abundant active sites at the heterostructures.

在可再生能源领域，先进材料的核心在于电催化和光电化学整体水分解的效率。然而，在析氢反应（HER）中，缺乏高性能和天然丰度的基于电催化剂的过渡金属，因此对于大规模应用存在巨大的挑战。因此，基于碳化钼（Mo ₂ C）的催化剂及其复合材料被认为是在所有pH值下不同介质中用于HER的最有前途和替代的贵金属电催化剂。在这项工作中，制备了超细的Mo ₂ C纳米颗粒，该纳米颗粒均匀地注入到中空的N掺杂碳多面体（Mo ₂通过采用MOF辅助的自我牺牲模板方法，提出了[电子邮件保护]。Mo ₂ [受电子邮件保护]在酸性和碱性溶液中均显示出合适的催化活性和对HER的可行稳定性。所制备的Mo ₂（受电子邮件保护）在HER区显示出快速有效的响应，且起始电位接近0.0 V，仅需达到89 mV（0.5 M H ₂ SO ₄介质）和87 mV（1.0 M KOH介质）的过电位即可。 10 mA cm ^-2和循环稳定性（10小时后性能损失<5％）。HER的这种独特活性主要归因于超细Mo ₂的多分散性C纳米颗粒及其富氮掺杂，独特的空心形态和异质结构上丰富的活性位点的协同作用。