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Lattice Boltzmann simulation in the context of battery systems

Lautenschläger, Martin und Weinmiller, Julius und Danner, Timo und Latz, Arnulf (2021) Lattice Boltzmann simulation in the context of battery systems. InterPore2021, 2021-05-31 - 2021-06-04, Online.

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Kurzfassung

Simulations based on the Lattice Boltzmann method are a powerful and efficient tool for the investigation of mesoscopic processes that are hard to study experimentally. Such simulations have been used successfully to study redox flow batteries [1]. But they have rarely been used to study transport mechanisms in other battery systems [2,3]. In the present work, the wetting process during the electrolyte filling in the battery production is investigated by means of the flow of electrolyte through realistic three-dimensional porous battery electrodes. The electrode microstructures are generated using a sophisticated stochastic model [4] for the active material which is complemented by an additional binder phase. The focus of the study is on determining the capillary pressure-saturation relation during electrolyte intrusion and drainage. The main influencing factors investigated in the present work, are the porosity of the electrodes, the proportion of the binder phase as well as the wetting behavior of both the active material and the binder. Besides, also the effect of spatially non-resolved nanopores in the binder is studied using a homogenization approach. Lattice Boltzmann simulations with different multiphase flow methods, i.e. the Shan-Chen pseudopotential method [5] and the color gradient method [6], are conducted. Results from both methods are compared with each other. For validation purposes, they are also compared against results determined using the pore morphology method. The results from the present study are shown to agree well with results from the literature. They are especially useful for optimizing the electrolyte filling process which is a time-determining step in the battery production. [1] D. Zhang et al.; J. Power Sources, 447 (2020), pp. 227249 [2] T. Danner et al.; J. Power Sources, 324 (2016), pp. 646-656 [3] Z. Jiang et al.; J. Power Sources, 324 (2018), pp. 500-513 [4] J. Feinauer et al.; Comput. Mater. Sci., 109 (2015), pp. 137-146 [5] X. Shan et H. Chen; Phys. Rev. E, 47 (3) (1993), pp. 1815-1819 [6] J. Leclaire et al.; Phys. Rev. E, 95 (3) (2017), pp. 033306

elib-URL des Eintrags:https://elib.dlr.de/147653/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Lattice Boltzmann simulation in the context of battery systems
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Lautenschläger, MartinMartin.Lautenschlaeger (at) dlr.dehttps://orcid.org/0000-0003-3266-4218NICHT SPEZIFIZIERT
Weinmiller, Juliusjulius.weinmiller (at) dlr.dehttps://orcid.org/0000-0002-5380-6791NICHT SPEZIFIZIERT
Danner, TimoTimo.Danner (at) dlr.dehttps://orcid.org/0000-0003-2336-6059NICHT SPEZIFIZIERT
Latz, ArnulfArnulf.Latz (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:1 Juni 2021
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Befüllung von Batterieelektroden
Veranstaltungstitel:InterPore2021
Veranstaltungsort:Online
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:31 Mai 2021
Veranstaltungsende:4 Juni 2021
HGF - Forschungsbereich:Energie
HGF - Programm:Materialien und Technologien für die Energiewende
HGF - Programmthema:Elektrochemische Energiespeicherung
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SP - Energiespeicher
DLR - Teilgebiet (Projekt, Vorhaben):E - Elektrochemische Speicher
Standort: Ulm
Institute & Einrichtungen:Institut für Technische Thermodynamik > Computergestützte Elektrochemie
Hinterlegt von: Lautenschläger, Martin
Hinterlegt am:23 Dez 2021 10:28
Letzte Änderung:09 Jul 2024 14:57

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