Highly selective Ag foam gas diffusion electrodes for CO<sub>2</sub> electroreduction by pulsed hydrogen bubble templation

Hoffmann, Hendrik; Kutter, Maximilian; Osiewacz, Jens; Paulisch-Rinke, Melanie-Cornelia; Lechner, Steffen; Ellendorff, Barbara; Hilgert, Annika; Manke, Ingo; Turek, Thomas; Roth, Christina

doi:10.1039/d3ey00220a

EES. Catal.

2024

DOI: 10.1039/d3ey00220a

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Highly selective Ag foam gas diffusion electrodes for CO₂ electroreduction by pulsed hydrogen bubble templation

Hendrik Hoffmann,

Maximilian Kutter,

Jens Osiewacz

et al.

Abstract: The electrochemical reduction of carbon dioxide to valuable fossil-free products opens up a way to close the carbon cycle, if based solely on renewable energy sources. Making the process industrially...

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Cited by 3 publications

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From Quinary Co–Cu–Mo–Pd–Re Materials Libraries to Gas Diffusion Electrodes for Alkaline Hydrogen Evolution

Wang,

Cechanaviciute,

Banko

et al. 2024

Adv Funct Materials

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Developing a hydrogen evolution reaction (HER) electrocatalyst that can steadily drive a large current density is of great significance for industrial electrochemical water‐splitting technology. Herein, the compositionally complex noble‐metal‐lean system Co–Cu–Mo–Pd–Re is investigated for alkaline HER by a scanning droplet cell‐assisted high‐throughput screening of co‐sputtered thin‐film material libraries. The identified hit compositions are used to prepare a catalyst‐coated Ni foam‐based layer that is hot‐pressed with a specifically designed PEEK‐covered carbon‐based gas diffusion layer to obtain a novel‐design gas diffusion electrode (GDE). H2 bubbles that collect on the electrode surface are effectively reduced by controlling the hydrophobicity of the catalyst layer of the GDE, hence enabling a high current (−1 A cm−2) operation for HER in alkaline water electrolysis.

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From Quinary Co–Cu–Mo–Pd–Re Materials Libraries to Gas Diffusion Electrodes for Alkaline Hydrogen Evolution

Wang,

Cechanaviciute,

Banko

et al. 2024

Adv Funct Materials

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show abstract

Surface coating combined with in situ cyclic voltammetry to enhance the stability of gas diffusion electrodes for electrochemical CO2 reduction

Pu,

Wu,

Wang

et al. 2024

Science of The Total Environment

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Method—Best Practices and Common Pitfalls in Experimental Investigation of Electrochemical CO₂ Reduction at Gas Diffusion Electrodes

Osiewacz,

Ellendorff,

Kunz

et al. 2024

J. Electrochem. Soc.

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Gas diffusion electrodes (GDEs) play a crucial role in the development of electro-chemical CO2 reduction (eCO2R) towards an conomically viable process. While membrane electrode assemblies (MEAs) are currently the most efficient approach due to their low cell voltage, electrolyte supported GDEs still present a valuable tool for the characterization of catalysts under industrially relevant current densities, allowing for direct measurement of the electrode potential against reference electrodes. In this study, common experimental methods of iR correction and pressure control in eCO2R literature studies on GDEs are analyzed and compared regarding their potential impact on the reported results. It is revealed that failure to account for dynamic changes in iR-drop can lead to significant inaccuracies in reported electrode potentials. Additionally, common methods for the application of differential pressure across GDEs are shown to impact the performance, leading to additional errors in experimental results. Based on these findings, an experimental protocol for the application of single high frequency response as a method for iR correction is developed, providing a tool for reproducible electrochemical characterization of GDEs in eCO2R.

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Highly selective Ag foam gas diffusion electrodes for CO₂ electroreduction by pulsed hydrogen bubble templation

Abstract: The electrochemical reduction of carbon dioxide to valuable fossil-free products opens up a way to close the carbon cycle, if based solely on renewable energy sources. Making the process industrially...

Cited by 3 publications

References 74 publications

From Quinary Co–Cu–Mo–Pd–Re Materials Libraries to Gas Diffusion Electrodes for Alkaline Hydrogen Evolution

From Quinary Co–Cu–Mo–Pd–Re Materials Libraries to Gas Diffusion Electrodes for Alkaline Hydrogen Evolution

Surface coating combined with in situ cyclic voltammetry to enhance the stability of gas diffusion electrodes for electrochemical CO2 reduction

Method—Best Practices and Common Pitfalls in Experimental Investigation of Electrochemical CO₂ Reduction at Gas Diffusion Electrodes

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Highly selective Ag foam gas diffusion electrodes for CO2 electroreduction by pulsed hydrogen bubble templation

Abstract: The electrochemical reduction of carbon dioxide to valuable fossil-free products opens up a way to close the carbon cycle, if based solely on renewable energy sources. Making the process industrially...

Cited by 3 publications

References 74 publications

From Quinary Co–Cu–Mo–Pd–Re Materials Libraries to Gas Diffusion Electrodes for Alkaline Hydrogen Evolution

From Quinary Co–Cu–Mo–Pd–Re Materials Libraries to Gas Diffusion Electrodes for Alkaline Hydrogen Evolution

Surface coating combined with in situ cyclic voltammetry to enhance the stability of gas diffusion electrodes for electrochemical CO2 reduction

Method—Best Practices and Common Pitfalls in Experimental Investigation of Electrochemical CO2 Reduction at Gas Diffusion Electrodes

Contact Info

Product

Resources

About

Highly selective Ag foam gas diffusion electrodes for CO₂ electroreduction by pulsed hydrogen bubble templation

Method—Best Practices and Common Pitfalls in Experimental Investigation of Electrochemical CO₂ Reduction at Gas Diffusion Electrodes