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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Copper Nanocubes for CO2 Reduction in Gas Diffusion Electrodes.
Yuxuan Wang,Hao Shen,Kenneth J. T. Livi,David Raciti,Han Zong,J. M. Gregg,Mofopefoluwa Onadeko,Yidong Wan,Adam Watson,Chao Wang +9 more
TL;DR: In this article, the effect of nanoparticle shape on the electrocatalysis of CO2 reduction by using gas-diffusion electrodes (GDEs) and flowing alkaline catholytes was investigated.
Journal ArticleDOI
Hierarchical Copper with Inherent Hydrophobicity Mitigates Electrode Flooding for High-Rate CO2 Electroreduction to Multicarbon Products.
Zhuang-Zhuang Niu,Fei-Yue Gao,Xiao-Long Zhang,Peng-Peng Yang,Ren Liu,Li-Ping Chi,Zhi-Zheng Wu,Shuai Qin,Xingxing Yu,Min-Rui Gao +9 more
TL;DR: In this paper, a bioinspired copper catalyst on a gas diffusion layer that mimics the unique hierarchical structuring of Setaria's hydrophobic leaves was proposed, which can not only trap more CO close to the active copper surface but also effectively resist electrolyte flooding even under high-rate operation.
Journal ArticleDOI
Promoting Electrocatalytic Hydrogen Evolution Reaction and Oxygen Evolution Reaction by Fields: Effects of Electric Field, Magnetic Field, Strain, and Light
Jiandong Yao,Wenjing Huang,Wei Fang,Min Kuang,Ning Jia,Hao Ren,Daobin Liu,Chade Lv,Chuntai Liu,Jianwei Xu,Qingyu Yan +10 more
Journal ArticleDOI
Fundamentals of Electrochemical CO2 Reduction on Single-Metal-Atom Catalysts
TL;DR: In this paper, the authors proposed an approach to produce valuable products from CO2 and to store intermittent renewable energy for storing and storing the earth-scale human waste and CO2.
Journal ArticleDOI
In Situ Observation of the pH Gradient near the Gas Diffusion Electrode of CO2 Reduction in Alkaline Electrolyte.
TL;DR: A continuous-flow Raman electrochemical cell is developed that enables the first experimental study of the local pH near a CO2 reduction gas diffusion electrode under reaction conditions, and verifies that the nominal overpotential reduction from using alkaline electrolyte originates from the Nernst potential of the pH gradient layer at the cathode/electrolyte interface.
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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