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https://doi.org/10.21256/zhaw-29877| Publication type: | Article in scientific journal |
| Type of review: | Peer review (publication) |
| Title: | Upscaling of reactive mass transport through porous electrodes in aqueous flow batteries |
| Authors: | Wlodarczyk, Jakub Karol Schärer, Roman Pascal Friedrich, Andreas Schumacher, Jürgen |
| et. al: | No |
| DOI: | 10.1149/1945-7111/ad258e 10.21256/zhaw-29877 |
| Published in: | Journal of the Electrochemical Society |
| Volume(Issue): | 171 |
| Issue: | 020544 |
| Issue Date: | 2024 |
| Publisher / Ed. Institution: | IOP Publishing |
| ISSN: | 1945-7111 |
| Language: | English |
| Subjects: | Porous electrode; Mathematical up-scaling; Volume-averaging; Transport phenomena; Redox flow battery |
| Subject (DDC): | 621.3: Electrical, communications, control engineering |
| Abstract: | Porous electrodes (PEs) are an important component of modern energy storage devices, such as lithium-ion batteries, flow batteries, or fuel cells. Their complicated multiphase structure presents a considerable challenge to modelling and simulation. In this paper, we apply the volume-averaging method (VAM) as an efficient approach for the evaluation of effective macroscopic transport parameters in PEs. We consider the transport of electro-active species coupled to heterogeneous Butler-Volmer type reactions at the electrode surface. We identify the characteristic scales and dimensionless groups for the application to aqueous flow batteries. We validate the VAM-based model with direct numerical simulation results and literature data showing excellent agreement. Subsequently, we characterise several simplified periodic PE structures in 2D and 3D in terms of hydraulic permeability, effective dispersion, and the effective kinetic number. We apply the up-scaled transport parameters to a simple macroscopic porous electrode to compare the overall efficiency of different pore-scale structures and material porosity values over a wide range of energy dissipation values. This study also reveals that the Bruggeman correction, commonly used in macroscopic porous electrode models, becomes inaccurate for realistic kinetic numbers in flow battery applications and should be used with care. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/29877 |
| Fulltext version: | Published version |
| License (according to publishing contract): | CC BY 4.0: Attribution 4.0 International |
| Departement: | School of Engineering |
| Organisational Unit: | Institute of Computational Physics (ICP) |
| Published as part of the ZHAW project: | Redox Flow Battery Campus |
| Appears in collections: | Publikationen School of Engineering |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| 2024_Wlodarczyk-etal_Upscaling-reactive-mass-transport-through-porous-electrodes.pdf | 1.82 MB | Adobe PDF |  View/Open |
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Wlodarczyk, J. K., Schärer, R. P., Friedrich, A., & Schumacher, J. (2024). Upscaling of reactive mass transport through porous electrodes in aqueous flow batteries. Journal of the Electrochemical Society, 171(020544). https://doi.org/10.1149/1945-7111/ad258e
Wlodarczyk, J.K. et al. (2024) ‘Upscaling of reactive mass transport through porous electrodes in aqueous flow batteries’, Journal of the Electrochemical Society, 171(020544). Available at: https://doi.org/10.1149/1945-7111/ad258e.
J. K. Wlodarczyk, R. P. Schärer, A. Friedrich, and J. Schumacher, “Upscaling of reactive mass transport through porous electrodes in aqueous flow batteries,” Journal of the Electrochemical Society, vol. 171, no. 020544, 2024, doi: 10.1149/1945-7111/ad258e.
WLODARCZYK, Jakub Karol, Roman Pascal SCHÄRER, Andreas FRIEDRICH und Jürgen SCHUMACHER, 2024. Upscaling of reactive mass transport through porous electrodes in aqueous flow batteries. Journal of the Electrochemical Society. 2024. Bd. 171, Nr. 020544. DOI 10.1149/1945-7111/ad258e
Wlodarczyk, Jakub Karol, Roman Pascal Schärer, Andreas Friedrich, and Jürgen Schumacher. 2024. “Upscaling of Reactive Mass Transport through Porous Electrodes in Aqueous Flow Batteries.” Journal of the Electrochemical Society 171 (020544). https://doi.org/10.1149/1945-7111/ad258e.
Wlodarczyk, Jakub Karol, et al. “Upscaling of Reactive Mass Transport through Porous Electrodes in Aqueous Flow Batteries.” Journal of the Electrochemical Society, vol. 171, no. 020544, 2024, https://doi.org/10.1149/1945-7111/ad258e.
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