Operando Synchrotron Imaging of Electrolyte Distribution in Silver-Based Gas Diffusion Electrodes During Oxygen Reduction Reaction in Highly Alkaline Media
Autor: | Melanie Paulisch, Marcus Gebhard, Barbara Ellendorff, Shashidhara Marathe, David Franzen, André Hilger, Ingo Manke, Thomas Turek, Christina Roth, Markus Osenberg, Christoph Rau |
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Rok vydání: | 2021 |
Předmět: |
Materials science
Distribution (number theory) Analytical chemistry Energy Engineering and Power Technology Electrolyte in situ operando techniques synchrotron imaging gas diffusion electrode oxygen depolarized cathode oxygen reduction reaction electrolyte distribution Synchrotron law.invention law Electrode Materials Chemistry Electrochemistry Chemical Engineering (miscellaneous) Gaseous diffusion Oxygen reduction reaction Electrical and Electronic Engineering |
Zdroj: | ACS Applied Energy Materials. 4:7497-7503 |
ISSN: | 2574-0962 |
Popis: | Understanding how gas diffusion electrodes are working is crucial to improve their performance and cost efficiency. One key issue is the electrolyte distribution during operation. Here, operando synchrotron imaging of the electrolyte distribution in silver based gas diffusion electrodes is presented. For this purpose, a half cell compartment was designed for operando synchrotron imaging of chronoamperometric measurements. For the first time, the electrolyte distribution could be analyzed in real time 1 s time resolution even in individual pores as small as a few micrometers. The detailed analyses of dynamic filling processes are an important step for understanding and improving electrodes |
Databáze: | OpenAIRE |
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