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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Assessing the Influence of Supercritical Carbon Dioxide on the Electrochemical Reduction to Formic Acid Using Carbon-Supported Copper Catalysts
Kai junge Puring,Olga Evers,Michael Prokein,Daniel Siegmund,Fabian Scholten,Nils Mölders,Manfred Renner,Beatriz Roldan Cuenya,Marcus Petermann,Eckhard Weidner,Ulf-Peter Apfel +10 more
TL;DR: In this article, the electrocatalytic reduction of carbon dioxide (CO2) by means of renewable energies is widely recognized as a promising approach to establish a sustainable closed carbon cycle economy.
Journal ArticleDOI
Unveiling the effects of dimensionality of tin oxide-derived catalysts on CO2 reduction by using gas-diffusion electrodes
Mengran Li,Mohamed Nazmi Idros,Yuming Wu,Sahil Garg,Shuai Gao,Rijia Lin,Hesamoddin Rabiee,Zhiheng Li,Lei Ge,Lei Ge,Thomas E. Rufford,Zhonghua Zhu,Liye Li,Geoff Wang +13 more
TL;DR: In this article, the authors compared the performance of tin oxide-derived 3D nanoparticles and 2D nanosheets deposited on gas-diffusion electrodes for CO2 conversion to formate.
Journal ArticleDOI
Highly effective conversion of CO2 into light olefins abundant in ethene
Sen Wang,Li Zhang,Pengfei Wang,Xingchen Liu,Yanyan Chen,Zhangfeng Qin,Mei Dong,Jianguo Wang,Libowen He,Unni Olsbye,Weibin Fan +10 more
TL;DR: In this article , a new catalyst consisting of Cr2O3(SG) oxide and H-SAPO-34 zeolite is fabricated, which shows C2=−C4= selectivity in hydrocarbons as high as 95.7% at 370°C and 0.5 MPa.
Journal ArticleDOI
Turning Harmful Deposition of Metal Impurities into Activation of Nitrogen-Doped Carbon Catalyst toward Durable Electrochemical CO2 Reduction
Chanyeon Kim,Yoong-Kee Choe,Da Hye Won,Ung Lee,Ung Lee,Hyung Suk Oh,Dong Ki Lee,Chang Hyuck Choi,Sungho Yoon,Woong Kim,Yun Jeong Hwang,Yun Jeong Hwang,Byoung Koun Min,Byoung Koun Min +13 more
TL;DR: In this paper, the authors designed a new system where metal impurities are utilized as activators and demonstrated self-activation of the N-doped carbon catalyst in the presence of Fe impurity with remarkable stability for 120 h.
References
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