Industrial Approach for Direct Electrochemical CO2 Reduction in Aqueous Electrolytes

Fleischer, Maximilian; Jeanty, P.; Wiesner‐Fleischer, Kerstin; Hinrichsen, Olaf

doi:10.1007/978-3-662-58006-6_12

Cited by 4 publications

(5 citation statements)

References 38 publications

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“…Carbon dioxide electrolysis is a technology with the potential to convert the most prevalent greenhouse gas into chemical feedstocks and fuels using renewable electricity. − As the field has advanced, it is clear that the reaction must occur at elevated reaction rates (e.g., high current densities), which has led to catalysts being positioned near a gas–liquid interface. This is typically achieved by using a gas diffusion electrode (GDE), where a catalyst is deposited on a gas diffusion layer (GDL). − Such application boosts the limiting CO 2 reduction current density by more than an order of magnitude when compared with that of electrodes in a conventional H cell that are typically limited to current densities of <60 mA/cm 2 . − …”

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confidence: 99%

Role of the Carbon-Based Gas Diffusion Layer on Flooding in a Gas Diffusion Electrode Cell for Electrochemical CO₂ Reduction

et al. 2020

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The deployment of gas diffusion electrodes (GDEs) for the electrochemical CO 2 reduction reaction (CO2RR) has enabled current densities an order of magnitude greater than those of aqueous H cells. The gains in production, however, have come with stability challenges due to rapid flooding of GDEs, which frustrate both laboratory experiments and scale-up prospects. Here, we investigate the role of carbon gas diffusion layers (GDLs) in the advent of flooding during CO2RR, finding that applied potential plays a central role in the observed instabilities. Electrochemical characterization of carbon GDLs with and without catalysts suggests that the high overpotential required during electrochemical CO2RR initiates hydrogen evolution on the carbon GDL support. These potentials impact the wetting characteristics of the hydrophobic GDL, resulting in flooding that is independent of CO2RR. Findings from this work can be extended to any electrochemical reduction reaction using carbon-based GDEs (CORR or N 2 RR) with cathodic overpotentials of less than −0.65 V versus a reversible hydrogen electrode.

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confidence: 99%

Role of the Carbon-Based Gas Diffusion Layer on Flooding in a Gas Diffusion Electrode Cell for Electrochemical CO₂ Reduction

et al. 2020

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“…A similar concept was shown for ethylene production, with a FE of 78.7% for C 2 products at a CD of 281 mA cm -2 [223]. Different academic and industrial actors have been also working with stacked designs recently, but the details of their setups have not been published yet [224][225][226].…”

Section: Statusmentioning

confidence: 99%

2022 roadmap on low temperature electrochemical CO₂ reduction

et al. 2022

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Electrochemical CO2 reduction is an attractive option for storing renewable electricity and for the sustainable production of valuable chemicals and fuels. In this roadmap, we review recent progress in fundamental understanding, catalyst development, and in engineering and scale-up. We discuss the outstanding challenges towards commercialization of electrochemical CO2 reduction technology: energy efficiencies, selectivities, low current densities, and stability. We highlight the opportunities in establishing rigorous standards for benchmarking performance, advances in in operando characterization, the discovery of new materials towards high value products, the investigation of phenomena across multiple-length scales and the application of data science towards doing so. We hope that this collective perspective sparks new research activities that ultimately bring us a step closer towards establishing a low- or zero-emission carbon cycle.

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“…This fact represents the growing impact of the research on classical electrochemical studies by coating a polymer or composite thin film on the electrodes to the improvement of CO 2 electroreduction processes. They go from activating the CO 2 reduction of metal catalysts by reducing the activation barrier by conductive polymers [37][38][39] in organic media to aqueous electrolytes [40,41], most directly scalable to large applications [42,43], although aqueous media may complicate the understanding of the reaction mechanisms occurring in the already difficult Cu-based electrocatalytic conversion system [44,45]. Table 2.…”

Section: Most Cited Papers and Author Abstractmentioning

confidence: 99%

An Analysis of Research on Membrane-Coated Electrodes in the 2001–2019 Period: Potential Application to CO2 Capture and Utilization

et al. 2020

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The chemistry and electrochemistry basic fields have been active for the last two decades of the past century studying how the modification of the electrodes’ surface by coating with conductive thin films enhances their electrocatalytic activity and sensitivity. In light of the development of alternative sustainable ways of energy storage and carbon dioxide conversion by electrochemical reduction, these research studies are starting to jump into the 21st century to more applied fields such as chemical engineering, energy and environmental science, and engineering. The huge amount of literature on experimental works dealing with the development of CO2 electroreduction processes addresses electrocatalyst development and reactor configurations. Membranes can help with understanding and controlling the mass transport limitations of current electrodes as well as leading to novel reactor designs. The present work makes use of a bibliometric analysis directed to the papers published in the 21st century on membrane-coated electrodes and electrocatalysts to enhance the electrochemical reactor performance and their potential in the urgent issue of carbon dioxide capture and utilization.

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Industrial Approach for Direct Electrochemical CO2 Reduction in Aqueous Electrolytes

Cited by 4 publications

References 38 publications

Role of the Carbon-Based Gas Diffusion Layer on Flooding in a Gas Diffusion Electrode Cell for Electrochemical CO₂ Reduction

Role of the Carbon-Based Gas Diffusion Layer on Flooding in a Gas Diffusion Electrode Cell for Electrochemical CO₂ Reduction

2022 roadmap on low temperature electrochemical CO₂ reduction

An Analysis of Research on Membrane-Coated Electrodes in the 2001–2019 Period: Potential Application to CO2 Capture and Utilization

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Industrial Approach for Direct Electrochemical CO2 Reduction in Aqueous Electrolytes

Cited by 4 publications

References 38 publications

Role of the Carbon-Based Gas Diffusion Layer on Flooding in a Gas Diffusion Electrode Cell for Electrochemical CO2 Reduction

Role of the Carbon-Based Gas Diffusion Layer on Flooding in a Gas Diffusion Electrode Cell for Electrochemical CO2 Reduction

2022 roadmap on low temperature electrochemical CO2 reduction

An Analysis of Research on Membrane-Coated Electrodes in the 2001–2019 Period: Potential Application to CO2 Capture and Utilization

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Product

Resources

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Role of the Carbon-Based Gas Diffusion Layer on Flooding in a Gas Diffusion Electrode Cell for Electrochemical CO₂ Reduction

Role of the Carbon-Based Gas Diffusion Layer on Flooding in a Gas Diffusion Electrode Cell for Electrochemical CO₂ Reduction

2022 roadmap on low temperature electrochemical CO₂ reduction