Regulating Active Hydrogen Supply Over Cu Clusters‐Interspersed MoS 2 /MoO 2 Nanosheets for Efficient Urea Electrosynthesis

作者：Yan Wang, Shuai Xia, Jianfang Zhang, Cuiping Yu, Jiayu Liu, Miao Han, Kui Chen, Hao Tan, Hao Tan, Yong Zhang, Hark Hoe Tan, Hark Hoe Tan, Yucheng Wu · 发表于：Advanced Functional Materials · 年份：2025 · DOI：10.1002/adfm.202519152 · 被引用次数：18 · 研究领域：Ammonia Synthesis and Nitrogen Reduction、Electrocatalysts for Energy Conversion、Catalytic Processes in Materials Science

Abstract Electrochemical urea synthesis is critically restricted by insufficient supply of active hydrogen ( * H) for the hydrogeneration of CO 2 and nitrate (NO 3 − ). Here, a tandem sites catalyst is designed by anchoring Cu clusters on MoS 2 /MoO 2 nanosheets (Cu‐MoS 2 /MoO 2 ), with the Cu sites activating CO 2 and NO 3 − and the Mo sites dissociating water to produce * H. In situ spectroscopic analysis and theoretical calculations reveal that the sufficient * H supply greatly promotes intermediate hydrogenation, thus enhancing C─N coupling for urea synthesis. Consequently, the Cu‐MoS 2 /MoO 2 catalyst displays significantly enhance performance of urea synthesis from CO 2 and NO 3 − , achieving a high yield of 117.5 mmol h −1 g cat. −1 at −0.6 V versus the reversible hydrogen electrode (RHE). Besides, stable electrocatalytic urea production is maintained for 68 h without a decline in yield or Faradaic efficiency. This work provides a meaningful perspective on modulating active hydrogen to promote urea production.