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
Catalyst Regeneration via Chemical Oxidation Enables Long-Term Electrochemical Carbon Dioxide Reduction.
Tu N. Nguyen,Zhu Chi Chen,Ali Shayesteh Zeraati,Hadi Shaker Shiran,Sharif Md. Sadaf,M. G. Kibria,Edward H. Sargent,Cao-Thang Dinh +7 more
TL;DR: In this article , a catalyst regeneration strategy was proposed to increase the operating lifetime of a copper (Cu) catalysts for producing valuable multicarbon (C2+) products under ECR conditions, especially at high current densities.
Journal ArticleDOI
BiPO4 Derived 2D Nanosheets for Efficient Electrocatalytic CO2 Reduction to Liquid Fuel
Yating Wang,Yu Hang Li,Jinze Liu,Chunxiao Dong,Chuqian Xiao,Ling Cheng,Hongliang Jiang,Hao Jiang,Chunzhong Li +8 more
Journal ArticleDOI
Water and Solute Activities Regulate CO2 Reduction in Gas-Diffusion Electrodes
Journal ArticleDOI
Reconstructing two-dimensional defects in CuO nanowires for efficient CO2 electroreduction to ethylene
TL;DR: In this article, in situ reconstructed Cu two-dimensional (2D) defects in CuO nanowires during CO2RR lead to significantly enhanced activity and selectivity of C2H4 compared to the CuO nanoplatelets.
Journal ArticleDOI
CO2 electroreduction to multicarbon products in strongly acidic electrolyte via synergistically modulating the local microenvironment
Zesong Ma,Zhi-lin Yang,Wenchuan Lai,Qiyou Wang,Yan-xin Qiao,Haolan Tao,Cheng Lian,Mingyan Liu,Chao Ma,Anlian Pan,Hongwen Huang +10 more
TL;DR: In this paper , the authors demonstrate CO2 electroreduction in strongly acidic electrolyte (pH ≤ 1) on electrochemically reduced porous Cu nanosheets by combining the confinement effect and cation effect to synergistically modulate the local microenvironment.
References
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Stephanie A. Nitopi,Erlend Bertheussen,Søren Bertelsen Scott,Xinyan Liu,Albert K. Engstfeld,Albert K. Engstfeld,Sebastian Horch,Brian Seger,Ifan E. L. Stephens,Ifan E. L. Stephens,Karen Chan,Karen Chan,Christopher Hahn,Christopher Hahn,Jens K. Nørskov,Jens K. Nørskov,Jens K. Nørskov,Thomas F. Jaramillo,Thomas F. Jaramillo,Ib Chorkendorff +19 more