材料科学
电化学
法拉第效率
氨
碳化
煅烧
氨生产
氮气
催化作用
无机化学
氧化物
化学工程
碳纤维
电催化剂
纳米技术
电极
化学
复合数
有机化学
冶金
扫描电子显微镜
物理化学
复合材料
工程类
作者
Chuan Dong,Xiaojun Han
标识
DOI:10.1016/j.mtener.2022.101181
摘要
Electrochemical nitrogen reduction reaction is a tremendous potential technology to convert N2 into highly value-added NH3. However, it still faces great challenges due to the difficult activation of nitrogen at room temperature. Herein, [email protected] nanocubes were synthesized for the electrochemical nitrogen reduction via the calcination of cuprous [email protected] The produced N-doped carbon from the carbonization of the PDA shell not only effectively protects the nanocube structure of the catalyst and enhances N2 adsorption ability but also provides the reduced intermediate to reduce cuprous oxide to Cu0. Cu0 as an effective active site effectively activates N2 and enhances the ammonia synthesis ability. Therefore, [email protected] nanocubes show an outstanding electrochemical activity with an ammonia yield rate of 35.54 μg/h/mg cat and high Faradaic efficiency of 21.12%. This work provides a way to enhance the electrocatalytic nitrogen reduction reaction performance of Cu-based materials by introducing Cu0.
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