Developing advanced materials with high catalytic activity for electrocatalytic applications is of vital importance to mitigate the energy crisis. In this work, we for the first time report a novel method to prepare bimetallic vanadium‑molybdenum nitride (MoVN) thin films by magnetron co-sputtering and further demonstrate their applications for hydrogen evolution reaction (HER). When used as HER catalysts, the resulting MoVN thin film electrodes show superior electrocatalytic activity especially in alkaline electrolyte in contrast to bare VN and Mo₂N, delivering a low overpotential of 108 mV to afford a current density of 10 mA cm⁻², a Tafel slope of 60 mV dec⁻¹, as well as excellent long-term durability. Most importantly, our study opens opportunities to explore new HER catalyst materials in the family of bimetallic transition metal nitrides.

开发用于电催化应用的具有高催化活性的先进材料对于缓解能源危机至关重要。在这项工作中，我们首次报道了一种通过磁控共溅射制备双金属钒钼氮化钼（MoVN）薄膜的新方法，并进一步证明了其在析氢反应（HER）中的应用。当用作HER催化剂时，与裸露的VN和Mo ₂ N相比，所得的MoVN薄膜电极显示出优异的电催化活性，特别是在碱性电解质中，可提供低至108 mV的过电势以提供10 mA cm ^-2的电流密度，塔菲尔斜率60 mV dec ^-1以及出色的长期耐用性。最重要的是，我们的研究为探索双金属过渡金属氮化物族中的新型HER催化剂材料提供了机会。