Electrochemical nitrogen reduction to ammonia is proposed as a promising alternative to the Haber–Bosch process because it can be driven by renewable electricity at ambient conditions. Currently, the development of such a process is hampered by the lack of efficient electrocatalysts for the nitrogen reduction reaction (NRR). Herein, we report a super‐rapid approach for the synthesis of flower‐like Au microstructures (Au flowers) within 5 s. The obtained Au structures are assembled by staggered nanoplates as building blocks, which provide abundant electrocatalytically active sites for the NRR. The Au flowers achieve a high performance (NH₃ yield: 25.57 μg h⁻¹ mg_cat.⁻¹; faradaic efficiency: 6.05 %), 100 % selectivity (no N₂H₄ production), and long‐term durability toward the electrochemical ammonia production. The work is highly valuable for the rapid synthesis of active catalysts for the NRR.

中文翻译：

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花样金微结构催化氮和水的环境电化学合成氨

提出将电化学氮还原成氨作为Haber-Bosch工艺的有前途的替代方法，因为它可以在环境条件下由可再生电力驱动。当前，由于缺乏用于氮还原反应（NRR）的有效电催化剂而阻碍了这种方法的发展。在此，我们报告了一种超快速方法，可在5 s内合成花状Au微结构（Au花）。所获得的金结构是由交错的纳米板组装而成的，它们为NRR提供了丰富的电催化活性位点。在Au花实现高性能（NH ₃产率：25.57微克ħ ^-1 毫克_猫。^-1 ;法拉第效率：6.05％），100％的选择性（没有N ₂H _4的生产），以及对电化学氨生产的长期耐久性。这项工作对于快速合成NRR活性催化剂非常有价值。