4.8 Article

Catalyst Regeneration via Chemical Oxidation Enables Long-Term Electrochemical Carbon Dioxide Reduction

Related references

Note: Only part of the references are listed.
Article Chemistry, Multidisciplinary

Copper Carbonate Hydroxide as Precursor of Interfacial CO in CO2 Electroreduction

Shan Jiang et al.

Summary: Copper electrodes have shown excellent catalytic performance in the reduction of CO2, but the underlying reasons are not well understood. In this study, using operando Raman experiments, the researchers investigated the structures and molecular interactions at the electrode-electrolyte interface and discovered the formation of a copper carbonate hydroxide (CuCarHyd) that resembles malachite. It was found that the reduction of carbonate ions, bound to the metallic Cu electrode in the form of CuCarHyd structures, was the starting point of carbon reduction, challenging previous mechanistic models. The presence of CuCarHyd patches at catalytic potentials could be attributed to alkalization and local electrical potential gradients. These findings provide important insights into improving the efficiency of CO2 reduction reactions and understanding their mechanisms.

CHEMSUSCHEM (2022)

Article Multidisciplinary Sciences

Understanding the complementarities of surface-enhanced infrared and Raman spectroscopies in CO adsorption and electrochemical reduction

Xiaoxia Chang et al.

Summary: This study demonstrates that surface enhanced infrared and Raman spectroscopies provide similar data on strongly binding surfaces, but probe different subpopulations of adsorbates on weakly adsorbing surfaces. The lack of scaling between derivatives of the dipole moment and the polarizability explains the different responses of infrared and Raman spectroscopies. The competitive adsorption of water on weak binding metals might contribute to the differences in infrared and Raman responses among metal surfaces. It is also found that only copper sites capable of adsorbing carbon monoxide in an atop configuration visible to surface enhanced infrared spectroscopy are active in the electrochemical carbon monoxide reduction reaction.

NATURE COMMUNICATIONS (2022)

Article Chemistry, Multidisciplinary

Oxidation State and Surface Reconstruction of Cu under CO2 Reduction Conditions from In Situ X-ray Characterization

Soo Hong Lee et al.

Summary: This study demonstrates the structural evolution of Cu catalyst surfaces during the CO2RR and reveals the surface reconstruction of Cu towards (100) facets in the presence of CO2. The findings highlight the dynamic nature of Cu electrocatalysts surface during CO2RR process and the importance of in situ characterization in understanding the role of surface structure in electrocatalysis.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Nanoscience & Nanotechnology

An industrial perspective on catalysts for low-temperature CO2 electrolysis

Richard I. Masel et al.

Summary: This Perspective discusses the key advances in nanocatalysts that have led to significant progress in the electrochemical conversion of CO2 to useful products, providing benchmarks for comparison and highlighting the need for further research.

NATURE NANOTECHNOLOGY (2021)

Article Multidisciplinary Sciences

The nature of active sites for carbon dioxide electroreduction over oxide-derived copper catalysts

Dongfang Cheng et al.

Summary: This study reveals the active sites for CO2 electroreduction over oxide-derived copper (OD-Cu) catalysts, identifying square-like sites responsible for specific products. Planar and convex square sites are found to be responsible for ethylene production, while the step square site favors alcohols generation, providing fundamental insights into the origin of activity and selectivity over Cu-based catalysts.

NATURE COMMUNICATIONS (2021)

Article Chemistry, Physical

Electrochemical CO2-to-ethylene conversion on polyamine-incorporated Cu electrodes

Xinyi Chen et al.

Summary: A Cu-polyamine hybrid catalyst was developed to significantly enhance the selectivity for ethylene production in CO2 electrochemical conversion. Incorporating polyamine altered surface reactivity, leading to improved product selectivity at high current densities.

NATURE CATALYSIS (2021)

Article Chemistry, Multidisciplinary

Selective CO2 Electrochemical Reduction Enabled by a Tricomponent Copolymer Modifier on a Copper Surface

Jianchun Wang et al.

Summary: In this study, a highly modular tricomponent copolymer modified Cu electrode achieved high selectivity for ethylene and C2+ products. Control experiments showed the essential role of all three components in enhancing selectivity. Additionally, the copolymer was found to be conveniently prepared and improved film robustness.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Chemistry, Multidisciplinary

Selective and High Current CO2 Electro-Reduction to Multicarbon Products in Near-Neutral KCl Electrolytes

Xiao Zhang et al.

Summary: A stable and selective electrocatalytic carbon dioxide reduction reaction (CO2RR) to C2+ products was achieved using a Cu electrocatalyst on a hydrophobic gas-diffusion layer (GDL) electrode in near-neutral KCl electrolytes. The instability of the catalyst in alkaline media under cathodic CO2RR conditions was largely suppressed by using a near-neutral electrolyte, showcasing the potential for long-term stability in CO2RR applications.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Electrochemistry

In Situ Raman Study of Potential-Dependent Surface Adsorbed Carbonate, CO, OH, and C Species on Cu Electrodes During Electrochemical Reduction of CO2

Mozhgan Moradzaman et al.

Summary: In this study, in situ surface-enhanced Raman spectroscopy and isotopic labeling techniques were used to investigate the surface composition changes during the electrochemical reduction of CO2 catalyzed by Cu in carbonate solution. The results showed that different surface species were observed at different potential ranges, with the surface processes being completely reversible back to Cu(I) oxide. These findings have implications for understanding electrode deactivation mechanisms and practical operation.

CHEMELECTROCHEM (2021)

Article Multidisciplinary Sciences

Efficient CO2 electroreduction on facet-selective copper films with high conversion rate

Gong Zhang et al.

Summary: The authors developed a novel synthetic approach to prepare Cu(100)-rich thin film electrodes for CO2 electroreduction, achieving high Faradaic efficiency for ethylene and C2+ products. Scaling up the electrode led to increased total current and higher yield of desired C2+ products. Insights into Cu facets exposure effects on intermediates were provided through in situ spectroscopic methods and theoretical calculations, enabling precise design of CO2 reduction reactions for future industrial applications.

NATURE COMMUNICATIONS (2021)

Article Chemistry, Physical

Self-Cleaning CO2 Reduction Systems: Unsteady Electrochemical Forcing Enables Stability

Yi Xu et al.

Summary: The study introduces a self-cleaning CO2 reduction strategy to enhance the efficiency of electrochemical conversion of CO2 and prevent carbonate salt formation, demonstrating a significant extension of the cathode's lifespan.

ACS ENERGY LETTERS (2021)

Review Chemistry, Physical

Electrochemical CO2 Reduction to Ethanol with Copper-Based Catalysts

Dilan Karapinar et al.

Summary: This Review highlights the importance and challenges of electrochemical CO2 reduction for ethanol production, categorizing and evaluating the performance of copper-based catalysts to aid in the design of more efficient catalysts for selective ethanol formation.

ACS ENERGY LETTERS (2021)

Article Chemistry, Multidisciplinary

Controllable Cu0-Cu+ Sites for Electrocatalytic Reduction of Carbon Dioxide

Xintong Yuan et al.

Summary: This study aims to enhance the CO2ER performance by increasing the synergism of Cu-0-Cu+ pairs, where Cu-0 activates CO2 molecules and facilitates electron transfer, while Cu+ strengthens *CO adsorption to further promote C-C coupling.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Selectivity Control of Cu Nanocrystals in a Gas-Fed Flow Cell through CO2 Pulsed Electroreduction

Hyo Sang Jeon et al.

Summary: This study utilized a pulsed CO2 electroreduction reaction approach to adjust product distribution in a gas-fed flow cell for industrially relevant current densities. By comparing the selectivity of Cu catalysts under potentiostatic and pulsed electrolysis conditions, it was found that the enhanced product selectivity in the latter case can be attributed to structural modifications and local pH effects. The differences in catalyst selectivity were observed to influence the formation of specific products, such as C-2 and CH4, through morphological reconstruction and consumption of OH - species near the catalyst surface.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Multidisciplinary Sciences

Molecular tuning of CO2-to-ethylene conversion

Fengwang Li et al.

NATURE (2020)

Article Chemistry, Multidisciplinary

Investigating Electrode Flooding in a Flowing Electrolyte, Gas-Fed Carbon Dioxide Electrolyzer

McLain E. Leonard et al.

CHEMSUSCHEM (2020)

Article Multidisciplinary Sciences

CO2 electrolysis to multicarbon products at activities greater than 1 A cm-2

F. Pelayo Garcia de Arquer et al.

SCIENCE (2020)

Article Chemistry, Multidisciplinary

Atypical Oxygen-Bearing Copper Boosts Ethylene Selectivity toward Electrocatalytic CO2 Reduction

Wei Zhang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

Article Multidisciplinary Sciences

Oxygen induced promotion of electrochemical reduction of CO2 via co-electrolysis

Ming He et al.

NATURE COMMUNICATIONS (2020)

Article Chemistry, Multidisciplinary

Electrochemical Fragmentation of Cu2O Nanoparticles Enhancing Selective C-C Coupling from CO2 Reduction Reaction

Hyejin Jung et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

Review Chemistry, Multidisciplinary

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

Stephanie Nitopi et al.

CHEMICAL REVIEWS (2019)

Article Chemistry, Physical

Gas-Diffusion Electrodes for Carbon Dioxide Reduction: A New Paradigm

Drew Higgins et al.

ACS ENERGY LETTERS (2019)

Article Engineering, Chemical

General Techno-Economic Analysis of CO2 Electrolysis Systems

Matthew Jouny et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2018)

Article Electrochemistry

On the Electrochemical CO2 Reduction at Copper Sheet Electrodes with Enhanced Long-Term Stability by Pulsed Electrolysis

Andreas Engelbrecht et al.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2018)

Article Multidisciplinary Sciences

Potential-induced nanoclustering of metallic catalysts during electrochemical CO2 reduction

Jianfeng Huang et al.

NATURE COMMUNICATIONS (2018)

Article Chemistry, Multidisciplinary

A Highly Porous Copper Electrocatalyst for Carbon Dioxide Reduction

Jing-Jing Lv et al.

ADVANCED MATERIALS (2018)

Article Chemistry, Multidisciplinary

Stability of Residual Oxides in Oxide-Derived Copper Catalysts for Electrochemical CO2 Reduction Investigated with 18O Labeling

Yanwei Lum et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2018)

Article Multidisciplinary Sciences

Copper nanoparticle ensembles for selective electroreduction of CO2 to C2-C3 products

Dohyung Kim et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2017)

Article Chemistry, Physical

Impurity Ion Complexation Enhances Carbon Dioxide Reduction Catalysis

Anna Wuttig et al.

ACS CATALYSIS (2015)

Article Electrochemistry

Deactivation of copper electrode in electrochemical reduction of CO2

Y Hori et al.

ELECTROCHIMICA ACTA (2005)