Cationic Copper Species Stabilized by Zinc during the Electrocatalytic Reduction of CO2 Revealed by In Situ X-Ray Spectroscopy

doi:10.1002/adsu.202200453

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/125604

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Title:	Cationic Copper Species Stabilized by Zinc during the Electrocatalytic Reduction of CO2 Revealed by In Situ X-Ray Spectroscopy
Authors:	Juan-Jesús Velasco-Vélez, Jeffrey Poon, Dunfeng Gao, Cheng-Hao Chuang, Arno Bergmann, Travis E. Jones, Shu-Chih Haw, Jin-Ming Chen, Emilia Carbonio, Rik V. Mom, Danail Ivanov, Rosa Arrigo, Beatriz Roldan Cuenya, Axel Knop-Gericke, Robert Schlögl
Date:	2023-03-30
Issue Date:	2024-07-30 12:06:53 (UTC+8)
Publisher:	Wiley-Blackwell
Abstract:	Advanced in situ X-ray absorption spectroscopy characterization of electrochemically co-electrodeposited bi-element copper alloy electrodes shows that zinc yields the formation of a stable cationic Cu species during the electroreduction of CO2 at high cathodic polarization. In contrast, the formation/stabilization of cationic Cu species in copper oxides, or doping Cu with another element, like Ni, is not possible. It is found that the pure and mixed Cu:Zn electrodes behave similarly in term of electrocatalytic selectivity to multi-carbon products. At higher Zn concentrations the electrode behaves like the pure Zn catalyst, which indicates that the Cu cationic species do not have a significant influence on the selectivity to multi-carbon products. It is found that in the non-monotonically distribution of products is dominated in term of surface energy in which copper prefers the surface. Otherwise, this work highlights the importance of in situ characterization to uncover the mechanisms mediating the catalytic reactions in contrast to ex situ or post mortem analysis, which can be a source of misinterpretation.
Relation:	Advanced Sustainable Systems 7(5), 2200453
DOI:	10.1002/adsu.202200453
Appears in Collections:	[物理學系暨研究所] 期刊論文

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