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Title: Efficient CO₂ electroreduction to ethanol by Cu₃Sn catalyst
Authors: Shang, Longmei
Lv, Ximeng
Zhong, Lixiang
Li, Shuzhou
Zheng, Gengfeng
Keywords: Engineering::Materials
Issue Date: 2022
Source: Shang, L., Lv, X., Zhong, L., Li, S. & Zheng, G. (2022). Efficient CO₂ electroreduction to ethanol by Cu₃Sn catalyst. Small Methods, 6(2), 2101334-.
Project: RG8/20 
Journal: Small Methods 
Abstract: Electrochemical carbon dioxide reduction to ethanol suggests a potential strategy to reduce the CO2 level and generate valuable liquid fuels, while the development of low-cost catalysts with high activity and selectivity remains a major challenge. In this work, a bimetallic, low-entropy state Cu3 Sn catalyst featuring efficient electrocatalytic CO2  reduction to ethanol is developed. This low-entropy state Cu3 Sn catalyst allows a high Faradaic efficiency of 64% for ethanol production, distinctively from the high-entropy state Cu6 Sn5  catalyst with the main selectivity toward producing formate. At an industry-level current density of -900 mA cm-2 , the Cu3 Sn catalyst exhibited excellent stability for over 48 h in a membrane-electrode based electrolyzer. Theoretical calculations indicate that the high ethanol selectivity on Cu3 Sn is attributed to its enhanced adsorption of several key intermediates in the ethanol production pathway. Moreover, the life-cycle assessment reveals that using the Cu3 Sn electrocatalyst, an electrochemical CO2 -to-ethanol electrolysis system powered by wind electricity can lead to a global warming potential of 120 kgCO2-eq for producing 1 ton of ethanol, corresponding to a 55% reduction of carbon emissions compared to the conventional bio-ethanol process.
ISSN: 2366-9608
DOI: 10.1002/smtd.202101334
Schools: School of Materials Science and Engineering 
Rights: This is the peer reviewed version of the following article: Shang, L., Lv, X., Zhong, L., Li, S. & Zheng, G. (2022). Efficient CO₂ electroreduction to ethanol by Cu₃Sn catalyst. Small Methods, 6(2), 2101334-, which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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