材料科学
催化作用
介孔材料
化学工程
高原(数学)
纳米技术
可再生能源
电流密度
有机化学
数学分析
化学
物理
数学
量子力学
工程类
电气工程
作者
Yiqun Chen,Junru Zhang,Jingyi Tian,Yue Guo,Fengfei Xu,Yan Zhang,Xizhang Wang,Lijun Yang,Qiang Wu,Zheng Hu
标识
DOI:10.1002/adfm.202214658
摘要
Abstract The practical applications of CO 2 electroreduction to CO driven by renewable electricity should simultaneously meet the requests of industrial‐level CO partial current density (J CO ) at least 100 mA cm −2 , wide potential window of high CO faradic efficiency (FE CO ), and low cost. Herein, a new strategy is reported to construct porous hierarchical Ni/N/C single‐site catalyst with excellent catalytic activity via coating Ni‐containing ZIF‐8 on mesostructured basic magnesium carbonate template followed by pyrolysis. The abundant micropores facilitate the formation of numerous edge‐hosted Ni‐N 4 sites with high intrinsic activity, and the interconnected macro/mesopores much promote CO 2 delivery and CO release for the full expression of intrinsic activity. Consequently, the catalyst exhibits the industrial‐level J CO of 105–462 mA cm −2 at the potential range of −0.6∼−1.3 V with ultra‐wide high FE CO plateau (>90%@−0.4∼−1.3 V), showing great promise for practical application. This study provides a general synthetic strategy to explore high‐performance hierarchical M/N/C electrocatalysts.
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