Journal ArticleDOI
CO2 electroreduction to ethylene via hydroxide-mediated copper catalysis at an abrupt interface
Cao-Thang Dinh,Thomas Burdyny,Golam Kibria,Ali Seifitokaldani,Christine M. Gabardo,F. Pelayo García de Arquer,Amirreza Kiani,Jonathan P. Edwards,Phil De Luna,Oleksandr S. Bushuyev,Chengqin Zou,Chengqin Zou,Rafael Quintero-Bermudez,Yuanjie Pang,David Sinton,Edward H. Sargent +15 more
TLDR
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).Abstract:
Carbon dioxide (CO 2 ) 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 CO 2 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 CO 2 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.read more
Citations
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Journal ArticleDOI
Cu-MOFs Derived Porous Cu Nanoribbons with Strengthened Electric Field for Selective CO2 Electroreduction to C2+ Fuels
Journal ArticleDOI
Enhancement of Mass Transfer for Facilitating Industrial-Level CO2 Electroreduction on Atomic Ni ? N4 Sites
Baotong Chen,Boran Li,Ziqi Tian,Wenbo Liu,Wenping Liu,Weiwei Sun,Kang Wang,Liang Chen,Jianzhuang Jiang +8 more
Journal ArticleDOI
An Experimental- and Simulation-Based Evaluation of the CO2 Utilization Efficiency of Aqueous-Based Electrochemical CO2 Reduction Reactors with Ion-Selective Membranes
TL;DR: In this paper, the CO2 utilization efficiency of three types of electrochemical CO2 reduction (CO2R) reactors by using different ion-selective membranes, including anion exchange membrane (AEM), cation exchange m...
Journal ArticleDOI
Atomically Dispersed High-Density Al-N4 Sites in Porous Carbon for Efficient Photodriven CO2 Cycloaddition.
Qihao Yang,Huaitao Peng,Huaitao Peng,Qiuju Zhang,Xu Qian,Xu Qian,Xu Chen,Xuan Tang,Sheng Dai,Jiajun Zhao,Kun Jiang,Qiu Yang,Jian Sun,Linjuan Zhang,Nian Zhang,Honglin Gao,Zhiyi Lu,Liang Chen +17 more
TL;DR: In this paper, the performance of the Al-N-C catalyst for catalytic CO2 cycloaddition under light irradiation (≈95% conversion, reaction rate = 3.52 mmol g-1 h-1 ) is significantly improved compared to that obtained under a thermal environment (approximately 57% conversion and a reaction rate of 2.11 mmol g−1 h−1 ).
Journal ArticleDOI
Bipolar membrane electrolyzers enable high single-pass CO2 electroreduction to multicarbon products
Ke Xie,Rui Kai Miao,Adnan Ozden,Shijie Liu,Zhu Chen,Cao-Thang Dinh,Jianan Erick Huang,Qiucheng Xu,Christine M. Gabardo,Geonhui Lee,Jonathan P. Edwards,Colin O’Brien,Shannon W. Boettcher,David Sinton,Edward H. Sargent +14 more
TL;DR: In this paper , a bipolar membrane (BPM) was used to convert (bi) carbonate back to CO2, preventing crossover and surpassing the single-pass utilization (SPU) limit (25% for multi-carbon products, C2+) suffered by previous neutral media electrolyzers.
References
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