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Development of a Modular Operando Cell for X-ray Imaging of Strongly Absorbing Silver-Based Gas Diffusion Electrodes

Title data

Hoffmann, Hendrik ; Paulisch, Melanie Cornelia ; Gebhard, Marcus ; Osiewacz, Jens ; Kutter, Maximilian ; Hilger, André ; Arlt, Tobias ; Kardjilov, Nikolay ; Ellendorff, Barbara ; Beckmann, Felix ; Markötter, Henning ; Luik, Marius ; Turek, Thomas ; Manke, Ingo ; Roth, Christina:
Development of a Modular Operando Cell for X-ray Imaging of Strongly Absorbing Silver-Based Gas Diffusion Electrodes.
In: Journal of the Electrochemical Society. Vol. 169 (2022) Issue 4 . - No. 044508.
ISSN 1945-7111
DOI: https://doi.org/10.1149/1945-7111/ac6220

Abstract in another language

Metal-based gas diffusion electrodes are utilized in chlor-alkali electrolysis or electrochemical reduction of carbon dioxide, allowing the reaction to proceed at high current densities. In contrast to planar electrodes and predominantly 2D designs, the industrially required high current densities can be achieved by intense contact between the gas and liquid phase with the catalytically active surfaces. An essential asset for the knowledge-based design of tailored electrodes is therefore in-depth information on electrolyte distribution and intrusion into the electrode's porous structure. Lab-based and synchrotron radiography allow for monitoring this process operando. Herein, we describe the development of a cell design that can be modularly adapted and successfully used to monitor both the oxygen reduction reaction and the electrochemical reduction of CO2 as exemplary and currently very relevant examples of gas-liquid reactions by only minor modifications to the cell set-up. With the reported cell design, we were able to observe the electrolyte distribution within the gas diffusion electrode during cell operation in realistic conditions.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Electrochemical Process Engineering > Chair Electrochemical Process Engineering - Univ.-Prof. Dr. Christina Roth
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 18 May 2022 07:53
Last Modified: 18 May 2022 07:53
URI: https://eref.uni-bayreuth.de/id/eprint/69634