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CFD model of slot die coating for lithium-ion battery electrodes in 2D and 3D with load balanced dynamic mesh refinement enabled with a local-slip boundary condition in OpenFOAM

Hoffmann, Alexander 1; Spiegel, Sandro ORCID iD icon 1; Heckmann, Thilo ORCID iD icon 1; Scharfer, Philip 1; Schabel, Wilhelm 1
1 Materialwissenschaftliches Zentrum für Energiesysteme (MZE), Karlsruher Institut für Technologie (KIT)

Abstract:

Slot die coating is a state-of-the-art process to manufacture lithium-ion battery electrodes with high accuracy and reproducibility, covering a wide range of process conditions and material systems. Common approaches to predict process windows are one-dimensional calculations with a limited expressiveness. A more detailed analysis can be performed using CFD simulations, which are often based on in-house code or closed-source software. In this study, a two-phase CFD model in two and three dimensions was created in OpenFOAM with the intent to provide a method for more detailed investigations of the slot die coating process with open access to source code and files. A custom boundary condition enables the proper description of the wetting behavior in the two-dimensional model. The combination of standard no-slip boundary conditions at the substrate boundary with the volume-of-fluid solution algorithm leads to a method-related air entrainment, which was prevented by allowing local slip at the dynamic wetting line at the upstream meniscus in the two-dimensional model. Additionally, a load-balancing dynamic refinement algorithm was implemented to minimize the computational effort and increase the ease of use of the simulation environment. ... mehr

Zugehörige Institution(en) am KIT Materialwissenschaftliches Zentrum für Energiesysteme (MZE)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 1547-0091, 0361-8773, 1935-3804, 1945-9645, 2168-8028, 2168-815X
KITopen-ID: 1000151271
HGF-Programm 43.31.02 (POF IV, LK 01) Devices and Applications
Erschienen in Journal of Coatings Technology and Research
Verlag Springer-Verlag
Band 20
Heft 1
Seiten 3–14
Bemerkung zur Veröffentlichung Zugl.: 14th European Coatings Symposium 2021, Brussels, Belgium
Vorab online veröffentlicht am 26.08.2022
Nachgewiesen in Web of Science
Dimensions
Scopus
OpenAlex
Globale Ziele für nachhaltige Entwicklung Ziel 7 – Bezahlbare und saubere Energie

Verlagsausgabe §
DOI: 10.5445/IR/1000151271
Veröffentlicht am 11.10.2022
Originalveröffentlichung
DOI: 10.1007/s11998-022-00660-8
Scopus
Zitationen: 9
Web of Science
Zitationen: 7
Dimensions
Zitationen: 8
Seitenaufrufe: 462
seit 11.10.2022
Downloads: 259
seit 13.10.2022
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