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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The lab-to-fab journey of copper-based electrocatalysts for multi-carbon production: Advances, challenges, and opportunities
Shilong Jiao,Shilong Jiao,Xianwei Fu,Li Zhang,Luhong Zhang,Shuangchen Ruan,Yu-Jia Zeng,Hongwen Huang +7 more
TL;DR: This review will begin with an introduction of some background to the electrochemical CO2 reduction reactions (ECR) process, followed by a discussion of the world’s energy status, and focuses on the advances for the optimization of the Cu-based electrocatalysts that generate multi-carbon products to meet the requirements of the industry from the point-view of electrolyzer design, electrocatalyst design and electrolyte design.
Journal ArticleDOI
Bifunctional ionomers for efficient co-electrolysis of CO2 and pure water towards ethylene production at industrial-scale current densities
Wenzheng Li,Zhen-gong Yin,Zeyu Gao,Gongwei Wang,Zhen Li,Feng Wei,Xing Wei,Han-Yu Peng,Xingtao Hu,Li Xiao,Juntao Lu,Lina Zhang +11 more
Journal ArticleDOI
Proton sponge promotion of electrochemical CO2 reduction to multi-carbon products
TL;DR: In this paper , an organosuperbase-modified commercial Cu nanoparticle presented a 20-fold improvement in C2+ to C1 ratio compared with its pristine performance, delivering a maximal C 2+ faradic efficiency of ∼80% and large partial current of over 270 mA cm−2 in neutral electrolyte.
Journal ArticleDOI
A mechanistic study of B36-supported atomic Au promoted CO2 electroreduction to formic acid
TL;DR: In this article, a single-atom catalyst in which atomic gold resides in the corner sites of a recently discovered B36 cluster was proposed, which is capable of adsorbing CO2 and promoting a highly active and selective CO2 reduction process to form HCOOH with a tiny electrochemical limiting potential of −0.08 V.
Journal ArticleDOI
Molecularly Defined Interface Created by Porous Polymeric Networks on Gold Surface for Concerted and Selective CO2 Reduction
TL;DR: In this paper, the design and synthesis of a catalyst for electrochemical reduction of carbon dioxide is described, where the high geometric current of metal electrode and the excellent selectivity of molecular catalysts are exploited.
References
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