Enhancing CO2 Electroreduction Performance through Si-Doped CuO: Stabilization of Cu+/Cu0 Sites and Improved C2 Product Selectivity

Cheng, Long; Wang, Rong; Si, Wenzhe; Deng, Yanxi; Li, Junhua; Peng, Yue

doi:10.1021/acscatal.4c01961

ACS Catal.

2024

DOI: 10.1021/acscatal.4c01961

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Enhancing CO₂ Electroreduction Performance through Si-Doped CuO: Stabilization of Cu⁺/Cu⁰ Sites and Improved C₂ Product Selectivity

Long Cheng,

Rong Wang,

Wenzhe Si

et al.

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Cited by 3 publications

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Controlling the Phase Composition of Pre‐Catalysts to Obtain Abundant Cu(111)/Cu(200) Grain Boundaries for Enhancing Electrocatalytic CO₂ Reduction Selectivity to Ethylene

Zhang,

Li,

Zhang

et al. 2024

Small

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The preparation of ethylene (C2H4) by electrochemical CO2 reduction (ECO2R) has dramatically progressed in recent years. However, the slow kinetics of carbon‐carbon (C‐C) coupling remains a significant challenge. A generalized facet reconstruction strategy is reported to prepare a 3‐phase mixed pre‐catalyst (Cu3N‐300) of Cu3N, Cu2O, and CuO by controlling the calcination temperature and to obtain the derived Cu catalyst (A‐Cu3N‐300‐0.5) enriched with Cu(111)/Cu(200) grain boundaries (GBs) by subsequent constant potential reduction. Its Faraday efficiency (FE) toward C2H4 at a low reaction potential of −1.07 V (vs reversible hydrogen electrode (RHE)) is 46.03%, which is much higher than the other 3 derived Cu catalysts containing single Cu(111) facets (24.89% and 24.52%) and Cu(111)/Cu(111) GBs (28.66%). Combining in situ experimental and theoretical computational studies, abundant Cu(111)/Cu(200) GBs is found to enhance CO2 activation and significantly promote the formation and adsorption of *CO intermediates, thereby lowering the activation energy barrier of C‐C coupling and increasing the FE of C2H4.

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Controlling the Phase Composition of Pre‐Catalysts to Obtain Abundant Cu(111)/Cu(200) Grain Boundaries for Enhancing Electrocatalytic CO₂ Reduction Selectivity to Ethylene

Zhang,

Li,

Zhang

et al. 2024

Small

View full text Add to dashboard Cite

show abstract

In-situ interfacial reactions in boron nitride-reinforced zinc implants for achieving strength and toughness

Shuai,

Zhang,

Yang

et al. 2024

Rare Met.

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Understanding oxidation state of Cu-based catalysts for electrocatalytic CO2 reduction

Zhu,

Qin,

Cai

et al. 2025

Journal of Materials Science & Technology

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Enhancing CO₂ Electroreduction Performance through Si-Doped CuO: Stabilization of Cu⁺/Cu⁰ Sites and Improved C₂ Product Selectivity

Cited by 3 publications

References 68 publications

Controlling the Phase Composition of Pre‐Catalysts to Obtain Abundant Cu(111)/Cu(200) Grain Boundaries for Enhancing Electrocatalytic CO₂ Reduction Selectivity to Ethylene

Controlling the Phase Composition of Pre‐Catalysts to Obtain Abundant Cu(111)/Cu(200) Grain Boundaries for Enhancing Electrocatalytic CO₂ Reduction Selectivity to Ethylene

In-situ interfacial reactions in boron nitride-reinforced zinc implants for achieving strength and toughness

Understanding oxidation state of Cu-based catalysts for electrocatalytic CO2 reduction

Contact Info

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Resources

About

Enhancing CO2 Electroreduction Performance through Si-Doped CuO: Stabilization of Cu+/Cu0 Sites and Improved C2 Product Selectivity

Cited by 3 publications

References 68 publications

Controlling the Phase Composition of Pre‐Catalysts to Obtain Abundant Cu(111)/Cu(200) Grain Boundaries for Enhancing Electrocatalytic CO2 Reduction Selectivity to Ethylene

Controlling the Phase Composition of Pre‐Catalysts to Obtain Abundant Cu(111)/Cu(200) Grain Boundaries for Enhancing Electrocatalytic CO2 Reduction Selectivity to Ethylene

In-situ interfacial reactions in boron nitride-reinforced zinc implants for achieving strength and toughness

Understanding oxidation state of Cu-based catalysts for electrocatalytic CO2 reduction

Contact Info

Product

Resources

About

Enhancing CO₂ Electroreduction Performance through Si-Doped CuO: Stabilization of Cu⁺/Cu⁰ Sites and Improved C₂ Product Selectivity

Controlling the Phase Composition of Pre‐Catalysts to Obtain Abundant Cu(111)/Cu(200) Grain Boundaries for Enhancing Electrocatalytic CO₂ Reduction Selectivity to Ethylene

Controlling the Phase Composition of Pre‐Catalysts to Obtain Abundant Cu(111)/Cu(200) Grain Boundaries for Enhancing Electrocatalytic CO₂ Reduction Selectivity to Ethylene