The High-efficiency hydrogen volution reaction catalysts are of significance for improving energy conversion efficiency of water electrolysis. Herein, a solvent vapour thermal reaction (SVTR), in which the phosphating process is conducted in an atmosphere of solvent vapours, is well designed for the first time to acquire NiCoP with diversified morphology. During this process, evaporative solvents not only react with aluminium phosphide (AlP) to generate phosphine as phosphorus source, but also disperse around the materials to influence phosphating reaction. The hydrogen evolution reaction activity of NiCoP is significantly enhanced by modulating the extent of phosphorization according to different reaction degree between AlP and solvents. Note that EG-NiCoP (ethylene glycol as solvent) manifests the most prominent HER performance in alkaline condition and (111) plane is the most stable and the highest catalytic active crystal face of NiCoP. The novel phosphating approach inspires a new thinking to devise more metal phosphides applied in energy-related applications.

高效氢涡旋反应催化剂对于提高水电解的能量转化效率具有重要意义。本文中，首次对溶剂蒸气热反应（SVTR）进行了精心设计，在该溶剂蒸气热反应中，在溶剂蒸气的气氛中进行了磷化处理，从而获得了形态多样的NiCoP。在此过程中，蒸发溶剂不仅会与磷化铝（AlP）反应生成磷化氢作为磷源，而且还会分散在材料周围以影响磷化反应。通过根据AlP与溶剂之间的不同反应程度调节磷化程度，可以显着提高NiCoP的析氢反应活性。请注意，EG-NiCoP（乙二醇作为溶剂）在碱性条件下表现出最突出的HER性能，而（111）面是NiCoP最稳定，催化活性最高的晶面。新颖的磷化方法激发了一种新思路，以设计出更多的金属磷化物用于能源相关应用。