New aspects of C2 selectivity in electrochemical CO<sub>2</sub>reduction over oxide-derived copper

Shah, Aamir Hassan; Wang, Yanjie; Hussain, Sajjad; Akbar, Muhammad Bilal; Woldu, Abebe Reda; Zhang, Xuehua; He, Tao

doi:10.1039/c9cp06009j

Cited by 35 publications

(33 citation statements)

References 55 publications

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“…Oxide Derived Copper: Neutral pHRecent studies have demonstrated that Cu materials derived from copper oxides (OD Cu) display high activity and selectivity for electroreduction of CO 2 to C 2 products (ethylene and ethanol) [45][46][47][48]. OD Cu electrodes are generally obtained by growing Cu 2 O layers from various Cu-based precursors (e.g.…”

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confidence: 99%

Electrochemical CO₂ Reduction to Ethanol with Copper-Based Catalysts

et al. 2021

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Electrochemical CO 2 reduction presents a sustainable route to storage of intermittent renewable energy. Ethanol is an important target product, which is used as fuel additive and as a chemical feedstock. However, electrochemical ethanol production is challenging as it involves the transfer of multiple electrons and protons alongside C−C bond formation. To date, the most commonly employed and effective catalysts are copper-based materials. This review presents and categorizes the most efficient and selective Cu-based electrocatalysts, which are divided into three main groups: oxide-

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confidence: 99%

Electrochemical CO₂ Reduction to Ethanol with Copper-Based Catalysts

et al. 2021

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“…One of the more interesting conclusions from the use of mixed oxides catalyst particles in the gas diffusion cathode was that ZnO and CuO, rather than metallic copper, control selective ethanol formation from carbon dioxide reduction 189. More recent works have concluded that the copper oxides at the surface are largely reduced during the carbon dioxide reduction reaction, but they also confirm that higher ethanol selectivity is obtained from cathode surfaces that initially had oxidized copper species present 64.…”

Section: Gas Phase/diffusion Cathodesmentioning

confidence: 72%

“…Whilst recent works still present evidence of the existence of Cu 2 O on the copper cathode surface during the reduction of carbon dioxide, there remains on‐going debate about the existence of sub‐surface unreduced ionic copper species that might promote this catalytic effect in the surface layers of copper, as most evidence indicates that the surface oxides are substantially, if not entirely, reduced 64, 65. It was concluded that both Cu 2 O and CuO were present prior to reduction and that the copper oxides were completely reduced to elemental copper during the carbon dioxide reduction reaction.…”

Section: Direct Electrochemical Reduction Of Carbon Dioxide To Ethylenementioning

confidence: 99%

Process Parameters in the Electrochemical Reduction of Carbon Dioxide to Ethylene

Sturman

Oelgemöller

2021

ChemBioEng Reviews

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Ethylene is one of the most widely used chemical compounds. It is readily transformed to a variety of useful products that can replace those derived from fossil sources. Further, the ability to produce ethylene from atmospheric carbon dioxide would significantly assist in the urgent need to stabilize, and ultimately to reduce, the concentration of greenhouse gases in the atmosphere. This review covers the electrochemical reduction of carbon dioxide at copper‐based cathodes. The direct production of ethylene is the focus of the review, but it is also relevant to include the important ethylene precursor and intermediate in the carbon dioxide reduction reaction, carbon monoxide. Carbon monoxide can be reduced to ethylene on a copper cathode under similar conditions to carbon dioxide. Ethanol is another potential product of the reduction of carbon dioxide at a copper cathode. It can be readily dehydrated to ethylene, further enhancing the overall yield of ethylene. The aim of the review is to show that there are many interacting parameters that influence the effectiveness and efficiency of the electrochemical reduction of carbon dioxide at copper‐based cathodes.

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“…Cu + of Cu x O catalysts prefers to adsorb intermediates, especially *CO, during the CRR process, and substantially convert CO 2 into ethylene. [ 69 ] Furthermore, some defect sites of Cu x O catalysts, such as oxygen vacancies, enhance the bond strength of *CO intermediate and ethylene selectivity. [ 75 ] Gu et al.…”

Section: Electrocatalystsmentioning

confidence: 99%

Recent Development of Electrocatalytic CO₂ Reduction Application to Energy Conversion

Feng

Zhang

et al. 2021

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Carbon dioxide (CO2) emission has caused greenhouse gas pollution worldwide. Hence, strengthening CO2 recycling is necessary. CO2 electroreduction reaction (CRR) is recognized as a promising approach to utilize waste CO2. Electrocatalysts in the CRR process play a critical role in determining the selectivity and activity of CRR. Different types of electrocatalysts are introduced in this review: noble metals and their derived compounds, transition metals and their derived compounds, organic polymer, and carbon‐based materials, as well as their major products, Faradaic efficiency, current density, and onset potential. Furthermore, this paper overviews the recent progress of the following two major applications of CRR according to the different energy conversion methods: electricity generation and formation of valuable carbonaceous products. Considering electricity generation devices, the electrochemical properties of metal–CO2 batteries, including Li–CO2, Na–CO2, Al–CO2, and Zn–CO2 batteries, are mainly summarized. Finally, different pathways of CO2 electroreduction to carbon‐based fuels is presented, and their reaction mechanisms are illustrated. This review provides a clear and innovative insight into the entire reaction process of CRR, guiding the new electrocatalysts design, state‐of‐the‐art analysis technique application, and reaction system innovation.

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New aspects of C2 selectivity in electrochemical CO₂reduction over oxide-derived copper

Abstract: Persistent Cu2O on ODCu plays an important role in C2 product selectivity due to its interactions with CO2RR intermediates.

Cited by 35 publications

References 55 publications

Electrochemical CO₂ Reduction to Ethanol with Copper-Based Catalysts

Electrochemical CO₂ Reduction to Ethanol with Copper-Based Catalysts

Process Parameters in the Electrochemical Reduction of Carbon Dioxide to Ethylene

Recent Development of Electrocatalytic CO₂ Reduction Application to Energy Conversion

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New aspects of C2 selectivity in electrochemical CO2reduction over oxide-derived copper

Abstract: Persistent Cu2O on ODCu plays an important role in C2 product selectivity due to its interactions with CO2RR intermediates.

Cited by 35 publications

References 55 publications

Electrochemical CO2 Reduction to Ethanol with Copper-Based Catalysts

Electrochemical CO2 Reduction to Ethanol with Copper-Based Catalysts

Process Parameters in the Electrochemical Reduction of Carbon Dioxide to Ethylene

Recent Development of Electrocatalytic CO2 Reduction Application to Energy Conversion

Contact Info

Product

Resources

About

New aspects of C2 selectivity in electrochemical CO₂reduction over oxide-derived copper

Electrochemical CO₂ Reduction to Ethanol with Copper-Based Catalysts

Electrochemical CO₂ Reduction to Ethanol with Copper-Based Catalysts

Recent Development of Electrocatalytic CO₂ Reduction Application to Energy Conversion