气候变化领域集成服务门户(CCPortal): Combined high alkalinity and pressurization enable efficient CO2 electroreduction to CO

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DOI	10.1039/c8ee01684d
	Combined high alkalinity and pressurization enable efficient CO2 electroreduction to CO
	Gabardo C.M.; Seifitokaldani A.; Edwards J.P.; Dinh C.-T.; Burdyny T.; Kibria M.G.; O'Brien C.P.; Sargent E.H.; Sinton D.
发表日期	2018
ISSN	17545692
起始页码	2531
结束页码	2539
卷号	11 期号:9
英文摘要	The electroreduction of carbon dioxide (CO2) to carbon monoxide (CO) is a promising strategy to utilize CO2 emissions while generating a high value product. Commercial CO2 electroreduction systems will require high current densities (>100 mA cm-2) as well as improved energetic efficiencies (EEs), achieved via high CO selectivity and lowered applied potentials. Here we report a silver (Ag)-based system that exhibits the lowest overpotential among CO2-to-CO electrolyzers operating at high current densities, 300 mV at 300 mA cm-2, with near unity selectivity. We achieve these improvements in voltage efficiency and selectivity via operation in a highly alkaline reaction environment (which decreases overpotentials) and system pressurization (which suppresses the generation of alternative CO2 reduction products), respectively. In addition, we report a new record for the highest half-cell EE (>80%) for CO production at 300 mA cm-2. © 2018 The Royal Society of Chemistry.
英文关键词	Carbon monoxide; Efficiency; Electrolytic reduction; Electron emission; Pressurization; Alkaline reaction; Applied potentials; CO selectivity; CO2 emissions; Electro reduction; Energetic efficiency; High current densities; Voltage efficiencies; Carbon dioxide; alkalinity; carbon dioxide; carbon emission; carbon monoxide; chemical reaction; electrochemical method; electrochemistry; electrolyte; reduction
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/190128
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	Gabardo C.M.,Seifitokaldani A.,Edwards J.P.,et al. Combined high alkalinity and pressurization enable efficient CO2 electroreduction to CO[J],2018,11(9).
APA	Gabardo C.M..,Seifitokaldani A..,Edwards J.P..,Dinh C.-T..,Burdyny T..,...&Sinton D..(2018).Combined high alkalinity and pressurization enable efficient CO2 electroreduction to CO.Energy & Environmental Science,11(9).
MLA	Gabardo C.M.,et al."Combined high alkalinity and pressurization enable efficient CO2 electroreduction to CO".Energy & Environmental Science 11.9(2018).