As an alternative approach for N₂ fixation under milder conditions, electrocatalytic nitrogen reduction reaction (NRR) represents a very attractive strategy for sustainable development and N₂ cycle to store and utilize energy from renewable sources. However, the research on NRR electrocatalysts still mainly focuses on noble metals, while, high costs and limited resources greatly restrict their large‐scale applications. Herein, as a proof‐of‐concept experiment, taking PdCu amorphous nanocluster anchored on reduced graphene oxide (rGO) as NRR catalysts, the optimum Pd_0.2Cu_0.8/rGO composite presents a synergistic effect and shows superior electrocatalytic performance toward NRR under ambient conditions (yield: 2.80 µg h⁻¹ mg_cat.⁻¹ at −0.2 V vs reversible hydrogen electrode), which is much higher than that of monometallic, especially noble metal, counterparts. The superior catalytic performance of alloy catalysts with low noble metal loading would strongly spur interest toward more researches on NRR catalysts in the future.

中文翻译：

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在环境中，水溶液中将PdCu非晶态纳米簇固定在石墨烯上，用于将N2电化学还原为NH3

作为在较温和条件下固定N ₂的替代方法，电催化氮还原反应（NRR）代表了一种非常有吸引力的可持续发展策略，并且N ₂循环用于存储和利用可再生能源。但是，NRR电催化剂的研究仍主要集中在贵金属上，而高昂的成本和有限的资源极大地限制了它们的大规模应用。在此，作为概念验证实验，以锚定在还原氧化石墨烯（rGO）上的PdCu无定形纳米簇作为NRR催化剂，最佳Pd _0.2 Cu _0.8 / rGO复合材料具有协同效应，并且在环境条件下对NRR具有优异的电催化性能。 （产量：2.80 µg h ^-1毫克_猫。^相对于可逆氢电极，在-0.2 V时为^-1），比单金属（尤其是贵金属）的氢电极高得多。低贵金属负载量的合金催化剂的优异催化性能将极大地激发人们对未来对NRR催化剂进行更多研究的兴趣。