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
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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
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Boosting electrochemical CO2 reduction on ternary heteroatoms-doped porous carbon
Fangqi Yang,Haoming Yu,Xinyu Mao,Qiangguo Meng,Shixia Chen,Qiang Deng,Zheling Zeng,Jun Wang,Shuguang Deng +8 more
TL;DR: In this article, the authors proposed to use metal-free carbon catalysts for the reverseduction of CO2 to value-added chemicals using single N-doped carbons.
Journal ArticleDOI
Fundamentals, On-Going Advances and Challenges of Electrochemical Carbon Dioxide Reduction
TL;DR: In this article, the authors examine the recently witnessed advances and on-going pursuits of electrochemical carbon dioxide reduction (ECR) in terms of the key fundamental mechanisms, basic experimentation principles, electrocatalysts and the electrochemical setup for ECR, aiming at offering timely key insights into solving the unsettled bottleneck issues.
Journal ArticleDOI
Electrode Engineering for Electrochemical CO2 Reduction
TL;DR: In this paper , a review of recent research progress on electrode engineering for increasing the CO2RR performance, along with electrode-stabilizing strategies for long-term CO2 electrolysis is presented.
Journal ArticleDOI
Eliminating the need for anodic gas separation in CO_2 electroreduction systems via liquid-to-liquid anodic upgrading
TL;DR: In this paper , a liquid-to-liquid anodic process is proposed to recover cross-over CO2 via gas-liquid separation without additional energy input. But the anode tail gas is directly fed into the cathodic input, along with fresh CO2 feedstock.
Journal ArticleDOI
Electrocatalytic Oxygen Reduction to Produce Hydrogen Peroxide: Rational Design from Single-Atom Catalysts to Devices
TL;DR: In this article , the authors present an in-depth review of the current trends for designing SACs for H 2 O 2 production via the 2e − ORR route.
References
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