Yisen Yang, Zhonghao Tan, Jianling Zhang, Jie Yang, Renjie Zhang, Sha Wang, Yi Song, Zhuizhui Su
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引用次数: 0
摘要
改进二氧化碳(CO2)电催化转化为多碳(C2+)产物具有重要意义。本文研制了一种氮掺杂Cu催化剂,该催化剂在流电池体系中C2+法拉第效率最高可达72.7%,分电流密度可达0.62 a cm-2。原位拉曼光谱表明,n掺杂Cu催化剂对*CO的吸附增强,从而促进了后续C-C耦合步骤中*CO的利用。同时,在Cu催化剂上掺杂N可以很好地增强水活化。由于协同作用,n - Cu催化剂对C2+产物的选择性和活性大大提高。
Nitrogen-doping boosts *CO utilization and H2O activation on copper for improving CO2 reduction to C2+ products
To improve the electrocatalytic transformation of carbon dioxide (CO2) to multi-carbon (C2+) products is of great importance. Here we developed a nitrogen-doped Cu catalyst, by which the maximum C2+ Faradaic efficiency can reach 72.7% in flow-cell system, with the partial current density reaching 0.62 A cm-2. The in situ Raman spectra demonstrate that the *CO adsorption can be strengthened on such a N-doped Cu catalyst, thus promoting the *CO utilization in the subsequent C-C coupling step. Simultaneously, the water activation can be well enhanced by N doping on Cu catalyst. Owing to the synergystic effects, the selectivity and activity for C2+ products over the N-deoped Cu catalyst are much improved.
期刊介绍:
Green Energy & Environment (GEE) is an internationally recognized journal that undergoes a rigorous peer-review process. It focuses on interdisciplinary research related to green energy and the environment, covering a wide range of topics including biofuel and bioenergy, energy storage and networks, catalysis for sustainable processes, and materials for energy and the environment. GEE has a broad scope and encourages the submission of original and innovative research in both fundamental and engineering fields. Additionally, GEE serves as a platform for discussions, summaries, reviews, and previews of the impact of green energy on the eco-environment.