Progress and Perspectives of Electrochemical CO₂ Reduction on Copper in Aqueous Electrolyte

Chemical Reviews, Journal Year: 2019, Volume and Issue: 119(12), P. 7610 - 7672

Published: May 22, 2019

To date, copper is the only heterogeneous catalyst that has shown a propensity to produce valuable hydrocarbons and alcohols, such as ethylene ethanol, from electrochemical CO2 reduction (CO2R). There are variety of factors impact CO2R activity selectivity, including surface structure, morphology, composition, choice electrolyte ions pH, cell design. Many these often intertwined, which can complicate discovery design efforts. Here we take broad historical view different aspects their complex interplay in catalysis on Cu, with purpose providing new insights, critical evaluations, guidance field regard research directions best practices. First, describe various experimental probes complementary theoretical methods have been used discern mechanisms by products formed, next present our current understanding reaction networks for Cu. We then analyze two key attempts alter selectivity Cu: nanostructuring formation bimetallic electrodes. Finally, offer some perspectives future outlook CO2R.

Language: Английский

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Electrocatalysis for CO₂conversion: from fundamentals to value-added products

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(8), P. 4993 - 5061

Published: Jan. 1, 2021

This timely and comprehensive review mainly summarizes advances in heterogeneous electroreduction of CO₂: from fundamentals to value-added products.

Language: Английский

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Defect and Interface Engineering for Aqueous Electrocatalytic CO2 Reduction

Joule, Journal Year: 2018, Volume and Issue: 2(12), P. 2551 - 2582

Published: Oct. 20, 2018

Language: Английский

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Boosting CO₂ Electroreduction to CH₄ via Tuning Neighboring Single-Copper Sites

ACS Energy Letters, Journal Year: 2020, Volume and Issue: 5(4), P. 1044 - 1053

Published: Feb. 6, 2020

We report single-atom Cu catalysts dispersed on nitrogen-doped carbon by a nitrogen-coordination strategy. The presence of nitrogen enabled good dispersion and attachment atomic species the frameworks with Cu–Nx configurations. doping concentrations configurations were well-tuned pyrolysis temperature. At high concentration 4.9%mol, distance between neighboring was close enough to enable C–C coupling produce C2H4. In contrast, at lower than 2.4%mol, large so that electrocatalyst favored formation CH4 as C1 products. Density functional theory calculations further confirmed capability producing C2H4 two CO intermediates binding adjacent Cu–N2 sites, while isolated Cu–N4, sites led CH4. Our work demonstrates facile approach tuning active for CO2 electroreduction different hydrocarbons.

Language: Английский

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Gas diffusion electrodes (GDEs) for electrochemical reduction of carbon dioxide, carbon monoxide, and dinitrogen to value-added products: a review

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(4), P. 1959 - 2008

Published: Jan. 1, 2021

Opportunities, challenges and design criteria associated with Gas diffusion electrodes (GDEs) for various electrochemical applications.

Language: Английский

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Electrochemical Energy Conversion on Intermetallic Compounds: A Review

ACS Catalysis, Journal Year: 2019, Volume and Issue: 9(3), P. 2018 - 2062

Published: Jan. 15, 2019

Structurally ordered intermetallic compounds possess unique chemical and physical properties, making them an interesting class of materials for application in electrocatalytic reactions. This Review comprises the work on used energy relevant electrocatalysis is structured by reactions scope, which are hydrogen evolution reaction (HER), electrochemical carbondioxide reduction (eCO2RR), oxygen (ORR), oxidation (HOR) as well formic acid (FAOR), methanol (MOR), ethanol (EtOR). Optimization pathways electrocatalysts, based adjustability materials, highlighted, experimental data provided a comparative manner, to provide overview, foundation, reference further development.

Language: Английский

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Boosting CO Production in Electrocatalytic CO₂ Reduction on Highly Porous Zn Catalysts

ACS Catalysis, Journal Year: 2019, Volume and Issue: 9(5), P. 3783 - 3791

Published: March 18, 2019

Earth-abundant electrocatalysts are desirable for the efficient and selective reduction of CO2 to value-added chemicals. Here, a low-cost porous Zn electrocatalyst is synthesized using facile electrodeposition method boost performance electrocatalytic reaction (CO2RR). In an H-cell reactor, catalyst can convert CO at remarkably high faradaic efficiency (FE, ∼95%) current density (27 mA cm–2) −0.95 V versus reversible hydrogen electrode. Detailed electrokinetic studies demonstrate that instead enhanced intrinsic activity, dramatically increased active sites play decisive role in improving catalytic activity. addition, local pH induced by highly structure results selectivity because suppressed H2 evolution. Furthermore, we present straightforward strategy transform electrode into gas diffusion This way, CO2RR be boosted 200 cm–2 with ∼84% FE −0.64 flow-cell which is, date, best observed over non-noble catalysts.

Language: Английский

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Potential Link between Cu Surface and Selective CO₂ Electroreduction: Perspective on Future Electrocatalyst Designs

Advanced Materials, Journal Year: 2020, Volume and Issue: 32(17)

Published: March 5, 2020

Abstract Electrochemical reduction of carbon dioxide (CO 2 RR) product distribution has been identified to be dependent on various surface factors, including the Cu facet, morphology, chemical states, doping, etc., which can alter binding strength key intermediates such as *CO and *OCCO during reduction. Therefore, in‐depth knowledge catalyst identification active species under reaction conditions aid in designing efficient Cu‐based electrocatalysts. This progress report categorizes electrocatalysts into four main groups, namely metallic Cu, alloys, compounds (Cu + non‐metal), supported catalysts by carbon, metal oxides, or polymers). The detailed mechanisms for selective CO RR are presented, followed recent relevant developments synthetic procedures preparing nanoparticles. Herein, potential link between performance is highlighted, especially terms but other significant factors defective sites roughened morphology equally considered discussion current studies with fully understand origin enhancement toward C formation. concludes providing suggestions future designs highly stable RR.

Language: Английский

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Copper‐Based Plasmonic Catalysis: Recent Advances and Future Perspectives

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(32)

Published: May 29, 2021

With the capability of inducing intense electromagnetic field, energetic charge carriers, and photothermal effect, plasmonic metals provide a unique opportunity for efficient light utilization chemical transformation. Earth-abundant low-cost Cu possesses tunable localized surface plasmon resonance from ultraviolet-visible to near infrared region. Moreover, essentially exhibits remarkable catalytic performance toward various reactions owing its intriguing physical properties. Coupling with light-harvesting ability function, serves as promising platform light-driven reaction. Herein, recent advancements Cu-based photocatalysis are systematically summarized, including designing synthetic strategies catalysts, performance, mechanistic understanding over catalysts. What's more, approaches enhancement efficiency construction active centers on catalysts highlighted discussed in detail, such morphology size control, regulation electronic structure, defect strain engineering, etc. Remaining challenges future perspectives further development catalysis also proposed.

Language: Английский

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Electrochemical Reduction of CO₂ over Heterogeneous Catalysts in Aqueous Solution: Recent Progress and Perspectives

Small Methods, Journal Year: 2018, Volume and Issue: 3(3)

Published: Dec. 12, 2018

Abstract Electrochemical reduction of CO 2 into value‐added chemicals or fuels, driven by renewable energy, presents a promising solution to depletion fossil fuels and greenhouse effects caused excessive carbon emissions. In the past few years, great efforts have been dedicated promote research in this field. Herein, review focuses on recent advances underlying mechanistic studies novel heterogeneous catalyst constructions for electrochemical aqueous media, targeting at presenting full landscape current stage. The outlook future development is also included end review.

Language: Английский

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