期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 139, 期 42, 页码 14889-14892出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b09074
关键词
-
资金
- National Basic Research Program of China [2015CB932302]
- National Natural Science Foundation of China [U1432133, 11621063, 21701164]
- National Program for Support of Top-notch Young
- Fundamental Research Funds for the Central Universities [WK2060190084, WK2060190058]
- Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology
- USTC Center for Micro and Nanoscale Research and Fabrication
Electrochemical reduction of carbon dioxide (CO2) to value-added carbon products is a promising approach to reduce CO2 levels and mitigate the energy crisis. However, poor product selectivity is still a major obstacle to the development of CO2 reduction. Here we demonstrate exclusive Ni-N-4 sites through a topochemical transformation strategy, bringing unprecedentedly high activity and selectivity for CO2 reduction. Topochemical transformation by carbon layer coating successfully ensures preservation of the Ni-N4 structure to a maximum extent and avoids the agglomeration of Ni atoms to particles, providing abundant active sites for the catalytic reaction. The Ni-N4 structure exhibits excellent activity for electrochemical reduction of CO2 with particularly high selectivity, achieving high faradaic efficiency over 90% for CO in the potential range from -0.5 to -0.9 V and gives a maximum faradaic efficiency of 99% at -0.81 V with a current density of 28.6 mA cm(-2). We anticipate exclusive catalytic sites will shed new light on the design
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据