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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Compositionally Screened Eutectic Catalytic Coatings on Halide Perovskite Photocathodes for Photoassisted Selective CO2 Reduction
Jie Chen,Jun Yin,Xiaopeng Zheng,Hassan Ait Ahsaine,Yang Zhou,Chunwei Dong,Omar F. Mohammed,Kazuhiro Takanabe,Osman M. Bakr +8 more
TL;DR: In this paper, an efficient and selective photocathode for converting CO2 to HCOOH in aqueous solution was proposed by coating the catalytic, protective, and conductive In0.4Bi0.6 alloy layer on a halide perovskite photovoltaic, effectively utilizing its low melting point eutectic molten state.
Journal ArticleDOI
Single-atom catalysts boost nitrogen electroreduction reaction
TL;DR: In this article, a review of single-atom catalysts (SACs) for nitrogen electroreduction reaction (NERR) is presented, including the most recent experimental and computational efforts on developing novel SACs with excellent NERR performance.
Journal ArticleDOI
Gas Phase Electrolysis of Carbon Dioxide to Carbon Monoxide Using Nickel Nitride as the Carbon Enrichment Catalyst.
TL;DR: The increased amount of strong base sites in the Ni3N catalyst could enrich CO2 at the catalyst surface, and the utilization of gas phase electrolysis, has cooperatively enhanced reactivity.
Journal ArticleDOI
In Situ Topotactic Transformation of an Interstitial Alloy for CO Electroreduction
Changming Zhao,Gan Luo,Xiaokang Liu,Wei Zhang,Zhijun Li,Qian Xu,Qinghua Zhang,Huijuan Wang,Deming Li,Fangyao Zhou,Yunteng Qu,Xiao Han,Zezhou Zhu,Geng Wu,Jing Wang,Junfa Zhu,Tao Yao,Yafei Li,Henny J.M. Bouwmeester,Henny J.M. Bouwmeester,Yuen Wu +20 more
TL;DR: High lattice-disordered Cu3 N with abundant twin structures as a precursor electrocatalyst is examined for CO reduction and delivers an unprecedented C2+ Faradaic efficiency of over 90% at a current density of 727 mA cm-2 in a flow cell system.
Journal ArticleDOI
Environment Matters: CO2RR Electrocatalyst Performance Testing in a Gas-Fed Zero-Gap Electrolyzer
María de Jesús Gálvez-Vázquez,Pavel Moreno-García,Heng Xu,Yuhui Hou,Huifang Hu,Ivan Zelocualtecatl Montiel,Alexander V. Rudnev,Alexander V. Rudnev,Shima Alinejad,Vitali Grozovski,Benjamin J. Wiley,Matthias Arenz,Peter Broekmann +12 more
TL;DR: Among the electrolyzers under development for CO2 electroreduction at practical reaction rates, gas-fed approaches that use gas diffusion electrodes (GDEs) as cathodes are the most promising.
References
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Journal ArticleDOI
Improved tangent estimate in the nudged elastic band method for finding minimum energy paths and saddle points
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