气候变化领域集成服务门户(CCPortal): Oxygen-tolerant electroproduction of C2 products from simulated flue gas

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DOI	10.1039/c9ee03077h
	Oxygen-tolerant electroproduction of C2 products from simulated flue gas
	Xu Y.; Edwards J.P.; Zhong J.; O'Brien C.P.; Gabardo C.M.; McCallum C.; Li J.; Dinh C.-T.; Sargent E.H.; Sinton D.
发表日期	2020
ISSN	17545692
起始页码	554
结束页码	561
卷号	13 期号:2
英文摘要	The electroreduction of carbon dioxide (CO2) to C2 products is a promising approach to divert and utilize CO2 emissions. However, the requirement of a purified CO2 feedstock decreases the economic feasibility of CO2 electrolysis. Direct utilization of industrial flue gas streams is encumbered by low CO2 concentrations and reactive oxygen (O2) impurities. We demonstrate that pressurization enables efficient CO2 electroreduction of dilute CO2 streams (15% v/v); however, with the inclusion of O2 (4% v/v), the oxygen reduction reaction (ORR) displaces CO2 reduction and consumes up to 99% of the applied current in systems based on previously-reported catalysts. We develop a hydrated ionomer catalyst coating strategy that selectively slows O2 transport and stabilizes the copper catalyst. Applying this strategy, we convert an O2-containing flue gas to C2 products at a faradaic efficiency (FE) of 68% and a non-iR-corrected full cell energetic efficiency (EE) of 26%. © 2020 The Royal Society of Chemistry.
英文关键词	Catalysts; Efficiency; Electrolytic reduction; Flue gases; Flues; Oxygen; Oxygen reduction reaction; CO2 concentration; Economic feasibilities; Electro reduction; Electroproduction; Energetic efficiency; Faradaic efficiencies; Industrial flue gas; Simulated flue gas; Carbon dioxide; carbon dioxide; coating; concentration (composition); electrochemical method; energy efficiency; reduction; simulation
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189702
作者单位	Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON M5S 3G8, Canada; Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON M5S 3G4, Canada
推荐引用方式 GB/T 7714	Xu Y.,Edwards J.P.,Zhong J.,et al. Oxygen-tolerant electroproduction of C2 products from simulated flue gas[J],2020,13(2).
APA	Xu Y..,Edwards J.P..,Zhong J..,O'Brien C.P..,Gabardo C.M..,...&Sinton D..(2020).Oxygen-tolerant electroproduction of C2 products from simulated flue gas.Energy & Environmental Science,13(2).
MLA	Xu Y.,et al."Oxygen-tolerant electroproduction of C2 products from simulated flue gas".Energy & Environmental Science 13.2(2020).