法拉第效率
材料科学
电化学
硼
电催化剂
氨生产
氨
无机化学
可逆氢电极
氮气
钼
兴奋剂
水溶液
溶解度
电解质
物理化学
电极
化学
冶金
参比电极
有机化学
光电子学
作者
Merfat M. Alsabban,Karthik Peramaiah,Alessandro Genovese,Rafia Ahmad,Luis Miguel Azofra,R. Vinoth,Mohamed Nejib Hedhili,Nimer Wehbe,Luigi Cavallo,Kuo‐Wei Huang
标识
DOI:10.1002/adma.202405578
摘要
Abstract The electrocatalytic synthesis of ammonia (NH 3 ) through the nitrogen reduction reaction (NRR) under ambient temperature and pressure is emerging as an alternative approach to the conventional Haber–Bosch process. However, it remains a significant challenge due to poor kinetics, low nitrogen (N 2 ) solubility in aqueous electrolytes, and the competing hydrogen evolution reaction (HER), which can significantly impact NH 3 production rates and Faradaic efficiency (FE). Herein, a rationally designed boron‐doped molybdenum sulfide (B‐Mo‐Mo x S y ) electrocatalyst is reported that effectively enhances N 2 reduction to NH 3 with an onset potential of −0.15 V versus RHE, achieving a FE of 78% and an NH 3 yield of 5.83 µg h⁻¹ cm⁻ 2 in a 0.05 m H 2 SO 4 (aq). Theoretical studies suggest that the effectiveness of NRR originates from electron density redistribution due to boron (B) doping, which provides an ideal pathway for nitrogenous species to bind with electron‐deficient B sites. This work demonstrates a significant exploration, showing that Mo‐based electrocatalysts are capable of facilitating artificial N 2 fixation.
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