Electrocatalytic water splitting offers a sustainable route for hydrogen production, enabling the clean and renewable alternative energy system of hydrogen economy. The scarcity and high-cost of platinum-group-metal (PGM) materials urge the exploration of high-performance non-PGM electrocatalysts. Herein, a unique hierarchical structure of Ni/V₂O₃ with extraordinary electrocatalytic performance (e.g., overpotentials as low as 22 mV at 20 mA·cm⁻² and 94 mV at 100 mA·cm⁻²) toward hydrogen evolution reaction in alkaline electrolyte (1 M KOH) is reported. The investigation on the hierarchical Ni/V₂O₃ with a bimodal size-distribution also offers insight of interfacial engineering that only proper Ni/V₂O₃ interface can effectively improve H₂O adsorption, H₂O dissociation as well as H adsorption, for an efficient hydrogen production.

电催化水分解为氢生产提供了一条可持续的途径，从而实现了清洁，可再生的氢能源替代能源系统。铂族金属（PGM）材料的稀缺性和高成本促使人们探索高性能非PGM电催化剂。在此，Ni / V ₂ O ₃具有独特的分级结构，具有优异的电催化性能（例如，在碱性条件下对氢析出反应具有超电势，例如在20 mA·cm ^-2时低至22 mV，在100 mA·cm ^-2时低至94 mV ）。据报道电解液（1 M KOH）。Ni / V ₂ O ₃分层研究具有双峰分布的分布还提供了界面工程学的见识，即只有适当的Ni / V ₂ O ₃界面才能有效地改善H ₂ O吸附，H ₂ O离解和H吸附，从而有效地制氢。