Electrochemical N₂ reduction reaction (NRR) under ambient conditions provides sustainable and green pathways, meanwhile, efficient electrocatalysts are strongly required. In this work, we report a interfacial active site strategy to improve the electrocatalytic NRR performance by modfication of Au nanowire (Au NW) surface with oxygen-rich tannic acid (TA). Benefiting from their ultrafine one-dimensional nanowire architecture and the TA-modified metallic interface, the TA-Au NWs effectively facilitate the adsorption and activation of reactants. The TA-Au NWs exhibit a large NH₃ yield rate (15.71 μg h^-1 mg^-1_cat.) and a high Faraday efficiency of 14.83% at -0.3 V (vs. the reversible hydrogen electrode, RHE) in a N₂-saturated 0.1 M Na₂SO₄ with an excellent electrochemical durability. This work provides a general surface modification strategy to fabricate highly active NRR electrocatalysts.

环境条件下的电化学 N ₂还原反应 (NRR) 提供了可持续的绿色途径，同时，强烈需要高效的电催化剂。在这项工作中，我们报告了一种界面活性位点策略，通过用富氧单宁酸 (TA) 修饰 Au 纳米线 (Au NW) 表面来提高电催化 NRR 性能。得益于超细一维纳米线结构和 TA 修饰的金属界面，TA-Au NWs 有效地促进了反应物的吸附和活化。TA-Au NWs 表现出很大的 NH ₃产率（15.71 μg h ^-1 mg ^-1 _cat.）和在 -0.3 V 时 14.83% 的高法拉第效率（与可逆氢电极 (RHE) 在 N ₂饱和的 0.1 M Na ₂ SO _{4 中}，具有优异的电化学耐久性。这项工作提供了一种通用的表面改性策略来制造高活性 NRR 电催化剂。