Dynamically Reconstructed Triple-Copper-Vacancy Associates Confined in Cu Nanowires Enabling High-Rate and Selective CO2 Electroreduction to C2+ Products

© 2024 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 23 vom: 04. Juni, Seite e2314209
1. Verfasser: Chen, Runhua (VerfasserIn)
Weitere Verfasser: Zu, Xiaolong, Zhu, Juncheng, Zhao, Yuan, Li, Yuhuan, Hu, Zexun, Wang, Shumin, Fan, Minghui, Zhu, Shan, Zhang, Hongjun, Ye, Bangjiao, Sun, Yongfu, Xie, Yi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article C2 fuels CO2 electroreduction reconstruction triple‐copper‐vacancy
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520 |a Electrochemically reconstructed Cu-based catalysts always exhibit enhanced CO2 electroreduction performance; however, it still remains ambiguous whether the reconstructed Cu vacancies have a substantial impact on CO2-to-C2+ reactivity. Herein, Cu vacancies are first constructed through electrochemical reduction of Cu-based nanowires, in which high-angle annular dark-field scanning transmission electron microscopy image manifests the formation of triple-copper-vacancy associates with different concentrations, confirmed by positron annihilation lifetime spectroscopy. In situ attenuated total reflection-surface enhanced infrared absorption spectroscopy discloses the triple-copper-vacancy associates favor *CO adsorption and fast *CO dimerization. Moreover, density-functional-theory calculations unravel the triple-copper-vacancy associates endow the nearby Cu sites with enriched and disparate local charge density, which enhances the *CO adsorption and reduces the CO-CO coupling barrier, affirmed by the decreased *CO dimerization energy barrier by 0.4 eV. As a result, the triple-copper-vacancy associates confined in Cu nanowires achieve a high Faradaic efficiency of over 80% for C2+ products in a wide current density range of 400-800 mA cm-2, outperforming most reported Cu-based electrocatalysts 
650 4 |a Journal Article 
650 4 |a C2 fuels 
650 4 |a CO2 electroreduction 
650 4 |a reconstruction 
650 4 |a triple‐copper‐vacancy 
700 1 |a Zu, Xiaolong  |e verfasserin  |4 aut 
700 1 |a Zhu, Juncheng  |e verfasserin  |4 aut 
700 1 |a Zhao, Yuan  |e verfasserin  |4 aut 
700 1 |a Li, Yuhuan  |e verfasserin  |4 aut 
700 1 |a Hu, Zexun  |e verfasserin  |4 aut 
700 1 |a Wang, Shumin  |e verfasserin  |4 aut 
700 1 |a Fan, Minghui  |e verfasserin  |4 aut 
700 1 |a Zhu, Shan  |e verfasserin  |4 aut 
700 1 |a Zhang, Hongjun  |e verfasserin  |4 aut 
700 1 |a Ye, Bangjiao  |e verfasserin  |4 aut 
700 1 |a Sun, Yongfu  |e verfasserin  |4 aut 
700 1 |a Xie, Yi  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Advanced materials (Deerfield Beach, Fla.)  |d 1998  |g 36(2024), 23 vom: 04. Juni, Seite e2314209  |w (DE-627)NLM098206397  |x 1521-4095  |7 nnas 
773 1 8 |g volume:36  |g year:2024  |g number:23  |g day:04  |g month:06  |g pages:e2314209 
856 4 0 |u http://dx.doi.org/10.1002/adma.202314209  |3 Volltext 
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