气候变化领域集成服务门户(CCPortal): CO2 electrolysis to multicarbon products in strong acid

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DOI	10.1126/science.abg6582
	CO2 electrolysis to multicarbon products in strong acid
	Huang J.E.; Li F.; Ozden A.; Rasouli A.S.; de Arquer F.P.G.; Liu S.; Zhang S.; Luo M.; Wang X.; Lum Y.; Xu Y.; Bertens K.; Miao R.K.; Dinh C.-T.; Sinton D.; Sargent E.H.
发表日期	2021
ISSN	0036-8075
起始页码	1074
结束页码	1078
卷号	372 期号:6546
英文摘要	Carbon dioxide electroreduction (CO2R) is being actively studied as a promising route to convert carbon emissions to valuable chemicals and fuels. However, the fraction of input CO2 that is productively reduced has typically been very low, <2% for multicarbon products; the balance reacts with hydroxide to form carbonate in both alkaline and neutral reactors. Acidic electrolytes would overcome this limitation, but hydrogen evolution has hitherto dominated under those conditions. We report that concentrating potassium cations in the vicinity of electrochemically active sites accelerates CO2 activation to enable efficient CO2R in acid. We achieve CO2R on copper at pH <1 with a single-pass CO2 utilization of 77%, including a conversion efficiency of 50% toward multicarbon products (ethylene, ethanol, and 1-propanol) at a current density of 1.2 amperes per square centimeter and a full-cell voltage of 4.2 volts. © 2021 American Association for the Advancement of Science. All rights reserved.
英文关键词	alcohol; carbon dioxide; carbon monoxide; copper; ethylene; hydrogen peroxide; methane; potassium chloride; potassium ion; propanol; carbon dioxide; carbon emission; concentration (composition); electrokinesis; fuel cell; alkalinity; Article; biocompatibility; biomass; current density; electrochemical analysis; electrolysis; electron transport; greenhouse gas; mathematical phenomena; pH; productivity; thermal conductivity; X ray absorption spectroscopy
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244085
作者单位	Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON M5S 1A4, Canada; School of Chemical and Biomolecular Engineering, University of Sydney Nano Institute, University of Sydney, Sydney, NSW 2006, Australia; Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada
推荐引用方式 GB/T 7714	Huang J.E.,Li F.,Ozden A.,et al. CO2 electrolysis to multicarbon products in strong acid[J],2021,372(6546).
APA	Huang J.E..,Li F..,Ozden A..,Rasouli A.S..,de Arquer F.P.G..,...&Sargent E.H..(2021).CO2 electrolysis to multicarbon products in strong acid.Science,372(6546).
MLA	Huang J.E.,et al."CO2 electrolysis to multicarbon products in strong acid".Science 372.6546(2021).