Progress and Perspectives of Electrochemical CO2 Reduction on Copper in Aqueous Electrolyte
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
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TLDR
A broad and historical view of different aspects and their complex interplay in CO2R catalysis on Cu is taken, with the purpose of providing new insights, critical evaluations, and guidance to the field with regard to research directions and best practices.Abstract:
To date, copper is the only heterogeneous catalyst that has shown a propensity to produce valuable hydrocarbons and alcohols, such as ethylene and ethanol, from electrochemical CO2 reduction (CO2R). There are variety of factors that impact CO2R activity and selectivity, including the catalyst surface structure, morphology, composition, the choice of electrolyte ions and pH, and the electrochemical cell design. Many of these factors are often intertwined, which can complicate catalyst discovery and design efforts. Here we take a broad and historical view of these different aspects and their complex interplay in CO2R catalysis on Cu, with the purpose of providing new insights, critical evaluations, and guidance to the field with regard to research directions and best practices. First, we describe the various experimental probes and complementary theoretical methods that have been used to discern the mechanisms by which products are formed, and next we present our current understanding of the complex reaction networks for CO2R on Cu. We then analyze two key methods that have been used in attempts to alter the activity and selectivity of Cu: nanostructuring and the formation of bimetallic electrodes. Finally, we offer some perspectives on the future outlook for electrochemical CO2R.read more
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Electrocatalytic reduction of CO2 to ethylene and ethanol through hydrogen-assisted C–C coupling over fluorine-modified copper
Wenchao Ma,Shunji Xie,Tongtong Liu,Qiyuan Fan,Jin-Yu Ye,Fanfei Sun,Zheng Jiang,Qinghong Zhang,Jun Cheng,Ye Wang +9 more
TL;DR: In this article, a fluorine-modified copper catalyst was proposed for electrocatalytic CO2 electroreduction in a flow cell, achieving an ultrahigh current density of 1.6
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Electrocatalysis for CO2 conversion: from fundamentals to value-added products
Genxiang Wang,Junxiang Chen,Yichun Ding,Pingwei Cai,Luocai Yi,Yan Li,Yan Li,Chaoyang Tu,Yang Hou,Zhenhai Wen,Liming Dai +10 more
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Core–shell structured catalysts for thermocatalytic, photocatalytic, and electrocatalytic conversion of CO2
Sonali Das,Javier Pérez-Ramírez,Javier Pérez-Ramírez,Jinlong Gong,Nikita Dewangan,Kus Hidajat,Bruce C. Gates,Sibudjing Kawi +7 more
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Molecular enhancement of heterogeneous CO 2 reduction.
Dae-Hyun Nam,Phil De Luna,Phil De Luna,Alonso Rosas-Hernández,Arnaud Thevenon,Fengwang Li,Theodor Agapie,Jonas C. Peters,Osama Shekhah,Mohamed Eddaoudi,Edward H. Sargent +10 more
TL;DR: This Perspective provides an overview of strategies that use molecular enhancement of heterogeneous catalysts to improve activity, efficiency and selectivity in the further development of CO2RR.
References
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Journal ArticleDOI
Bicarbonate Is Not a General Acid in Au-Catalyzed CO2 Electroreduction
TL;DR: It is concluded that bicarbonate is not a general acid cocatalyst and acts as a viable proton donor past the rate-limiting step and a sluggish buffer that maintains the bulk but not local pH in CO2-saturated aqueous electrolytes.
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Reduction of CO2 and CO to methane on Cu foil electrodes
TL;DR: In this article, the electrochemical reduction of CO 2 has been studied on Cu foil electrodes in 0.5 M KHCO 3, pH 7.6, and it was demonstrated that CH 4 is formed from CO at a 50 times lower rate than from CO 2 with an onset potential of −1.5 to − 1.6 V vs. SCE.
Journal ArticleDOI
Acetaldehyde as an Intermediate in the Electroreduction of Carbon Monoxide to Ethanol on Oxide-Derived Copper
Erlend Bertheussen,Arnau Verdaguer-Casadevall,Davide Ravasio,Joseph Montoya,Daniel Bøndergaard Trimarco,Claudie Roy,Sebastian Meier,Jürgen Wendland,Jens K. Nørskov,Ifan E. L. Stephens,Ifan E. L. Stephens,Ib Chorkendorff +11 more
TL;DR: In this article, a static headspace-gas chromatography for liquid phase analysis was used to identify acetaldehyde as a minor product and key intermediate in the electroreduction of CO to ethanol on OD-Cu electrodes.
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Controlling Catalytic Selectivities during CO2 Electroreduction on Thin Cu Metal Overlayers
Rulle Reske,Matteo Duca,Matteo Duca,Mehtap Oezaslan,Mehtap Oezaslan,Klaas Jan P. Schouten,Marc T. M. Koper,Peter Strasser +7 more
TL;DR: In this paper, the catalytic activity and selectivity of the electrochemical CO2 reduction on Cu overlayers with varying atomic-scale thickness on Pt was investigated, and the main products were hydrogen, methane, and ethylene.
Journal ArticleDOI
Electroreduction of Carbon Dioxide on Copper-Based Electrodes: Activity of Copper Single Crystals and Copper–Gold Alloys
TL;DR: The activity of copper single-crystal and copper-gold alloyed (Au1Cu99, Au10Cu90, Au20Cu80, Au50Cu50) electrodes for CO2 electroreduction has been investigated in aqueous phosphate buffer solutions by cyclic voltammetry and potentiostatic long-term electrolysis as mentioned in this paper.