Electrocatalytic nitrogen reduction reaction (NRR) under ambient conditions has been considered as a promising approach for green ammonia synthesis; however, non-precious metal-based catalysts with excellent NRR electrocatalytic performance have been scarce. Herein, self-supported bimetallic electrocatalysts of Ni12P5/FeP4 nanoplates grown on carbon cloth were synthesized by a combined process of hydrothermal technology and low-temperature phosphidation. The catalyst exhibits excellent electrocatalytic N2 fixation performance with a high NH3 yield rate of 3.08 × 10−10 mol s−1 cm−2 (16.40 μg h−1 mgcat−1), Faradaic efficiency (39.9%) as well good durability at − 0.1 V in 0.1 M Na2SO4 at ambient conditions, which are attributed to the distinctive nanostructure and rational composition. Our study paves the way for expanding the scope of NRR research and designing more efficient electrochemical ammonia synthesis in the future.

中文翻译：

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纳米结构的双金属磷化镍铁纳米片作为电催化剂在环境条件下有效固定 N2

环境条件下的电催化氮还原反应（NRR）被认为是绿色氨合成的一种有前途的方法。然而，具有优异NRR电催化性能的非贵金属基催化剂一直缺乏。在此，采用水热技术和低温磷化相结合的工艺合成了生长在碳布上的 Ni12P5/FeP4 纳米片的自支撑双金属电催化剂。该催化剂表现出优异的电催化 N2 固定性能，NH3 产率高达 3.08 × 10−10 mol s−1 cm−2 (16.40 μg h−1 mgcat−1)，法拉第效率 (39.9%) 以及良好的耐久性 - 0.1 V in 0.1 M Na2SO4 在环境条件下，这归因于独特的纳米结构和合理的组成。