Ampere-Level CO2-to-Ethanol Conversion via Boron-Incorporated Copper Electrodes
2023-11-10
发表期刊ACS ENERGY LETTERS (IF:19.3[JCR-2023],20.8[5-Year])
ISSN2380-8195
EISSN2380-8195
卷号8期号:11页码:4867-4874
发表状态已发表
DOI10.1021/acsenergylett.3c01901
摘要

Partial positive valence Cu (Cuδ+) sites on Cu-based electrocatalysts are important for C-C coupling to form C2+ products; however, maintaining the stability of Cuδ+ remains a challenge. Herein, an ultrastable Cuδ+ (0 2+ Faradaic efficiency (FE) of 78.9% at −0.91 V (vs reversible hydrogen electrode), of which the ethanol FE reaches 52.4% with an ultrahigh partial current density of 1.25 A cm-2, far outperforming state-of-the-art electrocatalysts, corresponding to the ethanol cathodic energy efficiency (CEE) of 27.7%. Spectroscopy and computation results show that introducing boron to optimize the coordination numbers and oxidation states of surface Cu atoms enables enrichment of locally asymmetric *COatop and *CHO intermediates to trigger asymmetric C-C coupling to form ethanol. © 2023 American Chemical Society.

关键词Conversion efficiency Copper Copper compounds Electrocatalysts Electrodes Energy efficiency Ethanol Adsorption strength C-C coupling Co-adsorption Copper electrodes Cu-based Ethanol conversion Faradaic efficiencies Partial currents Reversible hydrogen electrodes Stability of Cu
收录类别EI
语种英语
出版者American Chemical Society
EI入藏号20234815126459
EI主题词Boron
EI分类号525.2 Energy Conservation ; 525.5 Energy Conversion Issues ; 544.1 Copper ; 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals ; 803 Chemical Agents and Basic Industrial Chemicals ; 804.1 Organic Compounds
原始文献类型Journal article (JA)
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文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/347890
专题物质科学与技术学院
物质科学与技术学院_特聘教授组_魏伟组
物质科学与技术学院_博士生
通讯作者Wei, Wei; Chen, Wei
作者单位
1.Low-Carbon Conversion Science and Engineering Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai; 201210, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China;
3.School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201203, China;
4.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai; 201204, China
通讯作者单位物质科学与技术学院
推荐引用方式
GB/T 7714
Wu, Gangfeng,Zhu, Chang,Mao, Jianing,et al. Ampere-Level CO2-to-Ethanol Conversion via Boron-Incorporated Copper Electrodes[J]. ACS ENERGY LETTERS,2023,8(11):4867-4874.
APA Wu, Gangfeng.,Zhu, Chang.,Mao, Jianing.,Li, Guihua.,Li, Shoujie.,...&Chen, Wei.(2023).Ampere-Level CO2-to-Ethanol Conversion via Boron-Incorporated Copper Electrodes.ACS ENERGY LETTERS,8(11),4867-4874.
MLA Wu, Gangfeng,et al."Ampere-Level CO2-to-Ethanol Conversion via Boron-Incorporated Copper Electrodes".ACS ENERGY LETTERS 8.11(2023):4867-4874.
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