气候变化领域集成服务门户(CCPortal): Electrochemical CO2-to-ethylene conversion on polyamine-incorporated Cu electrodes

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DOI	10.1038/s41929-020-00547-0
	Electrochemical CO2-to-ethylene conversion on polyamine-incorporated Cu electrodes
	Chen X.; Chen J.; Alghoraibi N.M.; Henckel D.A.; Zhang R.; Nwabara U.O.; Madsen K.E.; Kenis P.J.A.; Zimmerman S.C.; Gewirth A.A.
发表日期	2021
ISSN	25201158
起始页码	20
结束页码	27
卷号	4 期号:1
英文摘要	Electrochemical conversion of CO2 into value-added chemicals holds promise to enable the transition to carbon neutrality. Enhancing selectivity for a specific hydrocarbon product is challenging, however, due to numerous possible reaction pathways of CO2 electroreduction. Here we present a Cu–polyamine hybrid catalyst, developed through co-electroplating, that significantly increases the selectivity for ethylene production. The Faradaic efficiency for ethylene production is 87% ± 3% at −0.47 V versus reversible hydrogen electrode, with full-cell energetic efficiency reaching 50% ± 2%. Raman measurements indicate that the polyamine entrained on the Cu electrode results in higher surface pH, higher CO content and higher stabilization of intermediates compared with entrainment of additives containing little or no amine functionality. More broadly, this work shows that polymer incorporation can alter surface reactivity and lead to enhanced product selectivity at high current densities. [Figure not available: see fulltext.] © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
scopus关键词	Additives; Aliphatic compounds; Carbon dioxide; Catalyst selectivity; Copper; Efficiency; Electrolytic reduction; Ethylene; Electrochemical conversion; Energetic efficiency; Ethylene conversions; Faradaic efficiencies; High current densities; Product selectivities; Reversible hydrogen electrodes; Value-added chemicals; Electrochemical electrodes
来源期刊	Nature Catalysis
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/177150
作者单位	Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, United States; International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka, Japan; Department of Chemical & Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, United States
推荐引用方式 GB/T 7714	Chen X.,Chen J.,Alghoraibi N.M.,et al. Electrochemical CO2-to-ethylene conversion on polyamine-incorporated Cu electrodes[J],2021,4(1).
APA	Chen X..,Chen J..,Alghoraibi N.M..,Henckel D.A..,Zhang R..,...&Gewirth A.A..(2021).Electrochemical CO2-to-ethylene conversion on polyamine-incorporated Cu electrodes.Nature Catalysis,4(1).
MLA	Chen X.,et al."Electrochemical CO2-to-ethylene conversion on polyamine-incorporated Cu electrodes".Nature Catalysis 4.1(2021).