Electrochemical CO2 reduction (CO2RR) to multi-carbon products over copper-based catalysts

Woldu, Abebe Reda; Huang, Zanling; Zhao, Pengxiang; Hu, Liangsheng; Astruc, Didier

doi:10.1016/j.ccr.2021.214340

Cited by 320 publications

(163 citation statements)

References 260 publications

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“…Electrode process is a continuous reaction with multiple basic processes, in order: liquid mass transfer, adsorption, electrochemical reaction, desorption, liquid mass transfer, which obeys the kinetic laws of general heterogeneous catalytic reactions 81 . The interface properties and area, mass transfer kinetics, and new phase formation kinetics all affect the reaction rate 82 .…”

Section: Reaction Routes Of Electrochemical Co2rrmentioning

confidence: 99%

Cu-Based Tandem Catalysts for Electrochemical CO<sub>2</sub> Reduction

Shi¹,

Hou²,

Li³

et al. 2022

Acta Physico Chimica Sinica

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Through the combustion of fossil fuels and other human activities, large amounts of CO2 gas have been emitted into the atmosphere, causing many environmental problems, such as the greenhouse effect and global warming. Thus, developing and utilizing renewable clean energy is crucial to reduce CO2 emission and achieve carbon neutrality. The electrochemical CO2 reduction reaction (CO2RR) has been considered as an effective approach to obtain high value-added chemicals and fuels, which can store intermittent renewable energy and achieve the artificial carbon cycle. In addition, due to its multiple advantages, such as mild reaction conditions, tunable products, and simple implementation, electrochemical CO2RR has attracted extensive attention. Electrochemical CO2RR involves multiple electron-proton transfer steps to obtain multitudinous products, such as C1 products (CO, HCOOH, CH4, etc.) and C2 products (C2H4, C2H5OH, etc.). The intermediates, among which * CO is usually identified as the key intermediate, and reaction pathways of different products intersect, resulting in an extremely complex reaction mechanism. Currently, copper has been widely proven to be the only metal catalyst that can efficiently reduce CO2 to hydrocarbons and oxygenates due to its suitable adsorption energy for * CO. However, the low product selectivity, poor stability, and high overpotential of pure Cu hinder its use for the production of industrial-grade multi-carbon products. Tandem catalysts with multiple types of active sites can sequentially reduce CO2 molecules into desired products. When loaded onto a co-catalyst that can efficiently convert CO2 to * CO (such as Au and Ag), Cu acts as an electron donor owing to its high electrochemical potential. * CO species generated from the substrate can spillover onto the surface of electron-poor Cu due to the stronger adsorption and be further reduced to C2+ products. The use of Cu-based tandem catalysts for electrochemical CO2RR is a promising strategy for improving the performance of CO2RR and thus, has become a research hotspot in recent years. In this review, we first introduce the reaction routes and tandem mechanisms of electrochemical CO2RR. Then, we systematically summarize the recent research progress of Cu-based tandem catalysts for electrochemical CO2RR, including Cu-based metallic materials (alloys, heterojunction, and core-shell structures) as well as Cu-based framework materials, carbon materials, and polymer-modified materials. Importantly, the preparation methods of various Cu-based tandem catalysts and their structure-activity relationship in CO2RR are discussed and analyzed in detail. Finally, the challenges and opportunities of the rational design and controllable synthesis of advanced tandem catalysts for electrochemical CO2RR are proposed.

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Section: Reaction Routes Of Electrochemical Co2rrmentioning

confidence: 99%

Cu-Based Tandem Catalysts for Electrochemical CO<sub>2</sub> Reduction

Shi¹,

Hou²,

Li³

et al. 2022

Acta Physico Chimica Sinica

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“…[3] Nevertheless, the selectivity of the reaction towards one specific product remains low, and the overpotentials for the production of hydrocarbon products remain relatively high. [4] Most of the CO 2 reduction reaction (CO 2 RR) research efforts have therefore been directed towards developing new electrocatalysts to either increase product selectivities or decrease overpotentials. Only a few studies have systematically tested or benchmarked the CO 2 RR performances of electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Benchmarking the Electrochemical CO₂ Reduction on Polycrystalline Copper Foils: The Importance of Microstructure Versus Applied Potential

et al. 2022

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Copper is one of the most promising catalysts for the CO 2 reduction reaction (CO 2 RR) due to its unique capability of producing multicarbon products in appreciable quantities. Most of the CO 2 RR research efforts have been directed towards the development of new electrocatalysts to either increase product selectivities or decrease overpotentials. In contrast, only a few studies have systematically tested or benchmarked CO 2 RR performances of electrocatalysts. In this paper, for the first time, the performances of five different polycrystalline copper foils purchased from different suppliers are benchmarked for their CO 2 RR performance. Their differences are characterized in terms of microstructural features and the effect that these microstructural properties have on the electrocatalytic behavior during potentiostatic CO 2 RR experiments are evaluated. It is shown that the potential applied is the dominant factor controlling CO 2 RR selectivities, leading to the conclusion that microstructural properties of polycrystalline copper electrodes have a negligible effect on the outcome of CO 2 RR experiments.

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“…11,12 However, Cu-containing electrocatalysts usually require large overpotentials and are not particularly selective toward >2e À products, thus leading to low energy efficiency and poor C 2+ product selectivity. 13,14 Although some advances have been made to enhance Cu-based catalysts, such as particle size effects, nanostructuring, face dependency, bimetallic alloys, and surface modication, 15,16 the further design of advanced Cu-based electrocatalysts with high efficiency is still of particular interest for the sustainable conversion of CO into highvalue C 2+ products.…”

Section: Introductionmentioning

confidence: 99%

Supported Cu₃ clusters on graphitic carbon nitride as an efficient catalyst for CO electroreduction to propene

et al. 2022

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Electrochemical CO2 reduction (CO2RR) to multi-carbon products over copper-based catalysts

Cited by 320 publications

References 260 publications

Cu-Based Tandem Catalysts for Electrochemical CO<sub>2</sub> Reduction

Cu-Based Tandem Catalysts for Electrochemical CO<sub>2</sub> Reduction

Benchmarking the Electrochemical CO₂ Reduction on Polycrystalline Copper Foils: The Importance of Microstructure Versus Applied Potential

Supported Cu₃ clusters on graphitic carbon nitride as an efficient catalyst for CO electroreduction to propene

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Electrochemical CO2 reduction (CO2RR) to multi-carbon products over copper-based catalysts

Cited by 320 publications

References 260 publications

Cu-Based Tandem Catalysts for Electrochemical CO<sub>2</sub> Reduction

Cu-Based Tandem Catalysts for Electrochemical CO<sub>2</sub> Reduction

Benchmarking the Electrochemical CO2 Reduction on Polycrystalline Copper Foils: The Importance of Microstructure Versus Applied Potential

Supported Cu3 clusters on graphitic carbon nitride as an efficient catalyst for CO electroreduction to propene

Contact Info

Product

Resources

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Benchmarking the Electrochemical CO₂ Reduction on Polycrystalline Copper Foils: The Importance of Microstructure Versus Applied Potential

Supported Cu₃ clusters on graphitic carbon nitride as an efficient catalyst for CO electroreduction to propene