Three-dimensional ordered porous N-doped carbon-supported accessible Ni-Nx active sites for efficient CO2 electroreduction

Zheng, Sijia; Chen, Hua; Yu, Junsheng; Bie, Qin; Chen, Jing-Dong; Wang, Feng; Wu, Rui; Blackwood, Daniel John; Chen, Jun‐Song

doi:10.1007/s12598-022-02247-z

Cited by 23 publications

(5 citation statements)

References 48 publications

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“…The enhanced performance of the pore-structured carbon membrane electrodes primarily stems from the facilitation of the mass transport of CO 2 and the exposure of additional active sites. When compared to the powder electro-catalysts of Ni–N–C reported in recent literature (Table S4), ,,− our self-supported carbon membrane electrode K 0.66 -Ni-NC exhibited an exceptionally wide operational window (>900 mV), making it a promising candidate for CO 2 reduction applications. We inferred that this behavior was a distinct feature of nitrogen-doped carbon self-supported electrodes.…”

Section: Resultsmentioning

confidence: 77%

Boosting Electrochemical CO₂ Reduction to CO by Regulating the Porous Structure of Carbon Membrane

Chuai,

Yang,

Zhang

2024

ACS Appl. Mater. Interfaces

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Ni single-atom-decorated nitrogen-doped carbon materials (Ni−N x -C) have demonstrated high efficiency in the electrochemical reduction of CO 2 (CO 2 RR) to CO. In this study, Ni−N x -C active sites were embedded within a carbon membrane via an electrospinning and pyrolysis process. The resulting selfsupported carbon membrane hosting Ni−N x -C sites could be directly utilized as an electrode for the CO 2 RR. To enhance the CO 2 RR performance of the carbon membrane, the porous structure of the carbon membrane was fine-tuned by incorporating a poreforming agent. The optimized porous carbon membrane electrode, K 0.66 -Ni-NC, achieved an impressive CO faradaic efficiency (FE CO ) of over 90% within a wide potential range from −0.8 to −1.6 V vs RHE for CO 2 RR. Additionally, it maintained an FE CO of above 90% at −0.8 V vs RHE throughout a 30 h durability test in an Hcell. Further analysis has revealed that the porous structure of the carbon membrane not only facilitates the mass transport of CO 2 but also increases the level of exposure of active sites during the CO 2 RR.

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Section: Resultsmentioning

confidence: 77%

Boosting Electrochemical CO₂ Reduction to CO by Regulating the Porous Structure of Carbon Membrane

Chuai,

Yang,

Zhang

2024

ACS Appl. Mater. Interfaces

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“…30 The Zn(OH) 2 /Cu 2+1 O/CF catalyst covered with Zn(OH) 2 could efficiently improve its specific surface area and total pore volume, facilitate ion transport and mass transfer of the gas molecules in the electrolyte, and ultimately enhance the electrochemical performance of the catalyst. 31–33 This study is expected to reveal the efficient conversion of CO 2 into C 2+ hydrocarbons and be an important reference for the design and construction of highly efficient copper-based catalysts with multiple valence states, defects, and active sites.…”

Section: Introductionmentioning

confidence: 99%

Highly selective electrocatalytic reduction of CO₂ to ethane over a petal-like Zn(OH)₂/Cu₂₊₁O/Cu foam catalyst at low overpotentials

Cao,

He,

Tian

et al. 2024

J. Mater. Chem. A

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“…[5][6][7] Compared to photocatalytic and thermocatalytic CO 2 reduction reactions, electrocatalytic CO 2 reduction reactions present a more operationally convenient alternative, which is amenable to execution at ambient temperature and pressure. 6,[8][9][10][11][12][13][14][15] This method proffers a novel avenue for the efficient conversion and utilization of CO 2 in the synthesis of basic chemicals and liquid fuels. [16][17][18] With the decreasing costs of renewable energy conversion to electricity, electrocatalytic CO 2 reduction reactions exhibit considerable potential for industrialscale production.…”

Section: Introductionmentioning

confidence: 99%

Copper oxide foam with high specific surface area for electrocatalytic reduction of CO₂ to C₂₊ products

Feng,

Hao,

Zhu

et al. 2024

cMat

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The carbon dioxide reduction reaction (CO2RR) for the synthesis of high‐energy‐density and high‐value multi‐carbon (C2+) products has demonstrated considerable potential for practical applications. In this work, we design a novel copper oxide foam (OD‐Cu foam) catalyst through a high‐temperature calcination process, characterized by a substantial specific surface area. The distinctive three‐dimensional structure of the OD‐Cu foam catalyst and the metal oxide particles covered on its surface provide abundant active sites. The total Faradaic efficiency of 57.3% for C2+ products over the OD‐Cu foam is achieved at −0.85 V versus reversible hydrogen electrode (RHE). Furthermore, the partial current density for C2+ products over the OD‐Cu foam reaches 44.1 mA cm−2 at −0.95 V versus RHE, surpassing significantly that both of Cu foam (3.4 mA cm−2) and copper oxide foil (OD‐Cu foil) (1.6 mA cm−2). In addition, the integrated structure of the OD‐Cu foam, which does not require complex preparation processes, facilitates its application in CO2RR. These results underscore the significance of three‐dimensional structure and high specific surface area, emphasizing the considerable potential of this catalyst for effective and sustainable CO2 conversion.

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Three-dimensional ordered porous N-doped carbon-supported accessible Ni-Nx active sites for efficient CO2 electroreduction

Cited by 23 publications

References 48 publications

Boosting Electrochemical CO₂ Reduction to CO by Regulating the Porous Structure of Carbon Membrane

Boosting Electrochemical CO₂ Reduction to CO by Regulating the Porous Structure of Carbon Membrane

Highly selective electrocatalytic reduction of CO₂ to ethane over a petal-like Zn(OH)₂/Cu₂₊₁O/Cu foam catalyst at low overpotentials

Copper oxide foam with high specific surface area for electrocatalytic reduction of CO₂ to C₂₊ products

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Three-dimensional ordered porous N-doped carbon-supported accessible Ni-Nx active sites for efficient CO2 electroreduction

Cited by 23 publications

References 48 publications

Boosting Electrochemical CO2 Reduction to CO by Regulating the Porous Structure of Carbon Membrane

Boosting Electrochemical CO2 Reduction to CO by Regulating the Porous Structure of Carbon Membrane

Highly selective electrocatalytic reduction of CO2 to ethane over a petal-like Zn(OH)2/Cu2+1O/Cu foam catalyst at low overpotentials

Copper oxide foam with high specific surface area for electrocatalytic reduction of CO2 to C2+ products

Contact Info

Product

Resources

About

Boosting Electrochemical CO₂ Reduction to CO by Regulating the Porous Structure of Carbon Membrane

Boosting Electrochemical CO₂ Reduction to CO by Regulating the Porous Structure of Carbon Membrane

Highly selective electrocatalytic reduction of CO₂ to ethane over a petal-like Zn(OH)₂/Cu₂₊₁O/Cu foam catalyst at low overpotentials

Copper oxide foam with high specific surface area for electrocatalytic reduction of CO₂ to C₂₊ products