Electrochemical nitrogen reduction (NRR) is a green and sustainable way to synthesize ammonia. However, how to construct electrocatalysts with excellent activity, selectivity and stability toward NRR remains a huge challenge. Herein, Mn–Bi–S hybrid nanosheets were successfully fabricated via dealloying and chemical vapor deposition. The result shows that the obtained Mn–Bi–S achieved high activity and selectivity with a high NH₃ yield rate (21.56 μg h⁻¹ mg⁻¹) and an enhanced faradaic efficiency (73.36%) at −0.3 V vs. RHE in 0.1 M Na₂SO₄ electrolyte. The mesoporous Mn–Bi–S hybrid nanosheets exhibit large surface area and efficient electron transport capability, which provides more active sites and regulates the trapping and activation energy of N₂, thus further improving the ammonia synthesis performance of the catalyst. This work develops an intriguing synthesis strategy of multi-elemental hybrid mesoporous electrocatalysts with excellent activity, selectivity and stability in the field of NRR.

中文翻译：

---

新型Mn-Bi-S杂化介孔纳米片作为氮还原反应的高效电催化剂

电化学氮还原（NRR）是一种绿色、可持续的氨合成方法。然而，如何构建对NRR具有优异活性、选择性和稳定性的电催化剂仍然是一个巨大的挑战。在此，通过脱合金和化学气相沉积成功制备了 Mn-Bi-S 杂化纳米片。结果表明，所获得的Mn-Bi-S在-0.3 V vs. RHE下实现了高活性和选择性，具有高NH ₃产率（21.56 μg h ^-1 mg ^-1）和增强的法拉第效率（73.36%）。0.1 M Na ₂ SO ₄电解质。介孔Mn-Bi-S杂化纳米片具有大的比表面积和高效的电子传输能力，提供了更多的活性位点并调节N ₂的捕获和活化能，从而进一步提高了催化剂的氨合成性能。这项工作开发了一种有趣的多元素杂化介孔电催化剂的合成策略，在NRR领域具有优异的活性、选择性和稳定性。