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DOI | 10.1126/science.aas9100 |
CO2 electroreduction to ethylene via hydroxide-mediated copper catalysis at an abrupt interface | |
Dinh, Cao-Thang1; Burdyny, Thomas2; Kibria, Md Golam1; Seifitokaldani, Ali1; Gabardo, Christine M.2; de Arquer, F. Pelayo Garcia1; Kiani, Amirreza1; Edwards, Jonathan P.2; De Luna, Phil3; Bushuyev, Oleksandr S.1; Zou, Chengqin1,4; Quintero-Bermudez, Rafael1; Pang, Yuanjie2; Sinton, David2; Sargent, Edward H.1 | |
2018-05-18 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 360期号:6390页码:783-787 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; Peoples R China |
英文摘要 | Carbon dioxide (CO2) electroreduction could provide a useful source of ethylene, but low conversion efficiency, low production rates, and low catalyst stability limit current systems. Here we report that a copper electrocatalyst at an abrupt reaction interface in an alkaline electrolyte reduces CO2 to ethylene with 70% faradaic efficiency at a potential of -0.55 volts versus a reversible hydrogen electrode (RHE). Hydroxide ions on or near the copper surface lower the CO2 reduction and carbon monoxide (CO)-CO coupling activation energy barriers; as a result, onset of ethylene evolution at -0.165 volts versus an RHE in 10 molar potassium hydroxide occurs almost simultaneously with CO production. Operational stability was enhanced via the introduction of a polymer-based gas diffusion layer that sandwiches the reaction interface between separate hydrophobic and conductive supports, providing constant ethylene selectivity for an initial 150 operating hours. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000432473500047 |
WOS关键词 | CARBON-DIOXIDE REDUCTION ; ELECTROCHEMICAL REDUCTION ; HYDROGEN EVOLUTION ; THEORETICAL INSIGHTS ; CU ; ELECTRODES ; HYDROCARBONS ; NANOPARTICLES ; SELECTIVITY ; POTENTIALS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/198688 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Toronto, Dept Elect & Comp Engn, 10 Kings Coll Rd, Toronto, ON M5S 3G4, Canada; 2.Univ Toronto, Dept Mech & Ind Engn, 5 Kings Coll Rd, Toronto, ON M5S 3G8, Canada; 3.Univ Toronto, Dept Mat Sci Engn, 184 Coll St, Toronto, ON M5S 3E4, Canada; 4.Tianjin Univ, Sch Mat Sci & Engn, Inst New Energy Mat, Tianjin 300072, Peoples R China |
推荐引用方式 GB/T 7714 | Dinh, Cao-Thang,Burdyny, Thomas,Kibria, Md Golam,et al. CO2 electroreduction to ethylene via hydroxide-mediated copper catalysis at an abrupt interface[J]. SCIENCE,2018,360(6390):783-787. |
APA | Dinh, Cao-Thang.,Burdyny, Thomas.,Kibria, Md Golam.,Seifitokaldani, Ali.,Gabardo, Christine M..,...&Sargent, Edward H..(2018).CO2 electroreduction to ethylene via hydroxide-mediated copper catalysis at an abrupt interface.SCIENCE,360(6390),783-787. |
MLA | Dinh, Cao-Thang,et al."CO2 electroreduction to ethylene via hydroxide-mediated copper catalysis at an abrupt interface".SCIENCE 360.6390(2018):783-787. |
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