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Traskunov, Igor and Latz, Arnulf (2021) Lithium gradients in active material, local anisotropy and DFN model accuracy: theory, simulations and DFN extension. Oxford Battery Modelling Symposium OBMS21, 31. Mar. 2021, Oxford, Großbritannien.
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Abstract
In microstructure-resolving lithium-ion batteries simulation the predictions (potential, ion concentration, overpotential) differ from the ones of DFN, which predicts only the local running average, due to the idealization of spherical particle. Accurate theoretical and numerical analysis of the relation between the microscopic model and DFN is needed, possibly a suitable DFN extension that captures the local fluctuations. We provided a theoretical explanation of the models' prediction differences and developed a new computationally effective model as an extension of Newman model with the differences taken into account.
| Item URL in elib: | https://elib.dlr.de/147758/ | |||||||||
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| Document Type: | Conference or Workshop Item (Poster) | |||||||||
| Title: | Lithium gradients in active material, local anisotropy and DFN model accuracy: theory, simulations and DFN extension. | |||||||||
| Authors: |
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| Date: | 31 March 2021 | |||||||||
| Refereed publication: | No | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Status: | Published | |||||||||
| Keywords: | Li-Ion battery, microstructure, Newman model, porous electrode theory, local fluctuations | |||||||||
| Event Title: | Oxford Battery Modelling Symposium OBMS21 | |||||||||
| Event Location: | Oxford, Großbritannien | |||||||||
| Event Type: | international Conference | |||||||||
| Event Dates: | 31. Mar. 2021 | |||||||||
| HGF - Research field: | Energy | |||||||||
| HGF - Program: | Materials and Technologies for the Energy Transition | |||||||||
| HGF - Program Themes: | Electrochemical Energy Storage | |||||||||
| DLR - Research area: | Energy | |||||||||
| DLR - Program: | E VS - Combustion Systems | |||||||||
| DLR - Research theme (Project): | E - Materials for Electrochemical Energy Storage, V - Energie und Verkehr | |||||||||
| Location: | Ulm | |||||||||
| Institutes and Institutions: | Institute of Engineering Thermodynamics > Computational Electrochemistry | |||||||||
| Deposited By: | Traskunov, Igor | |||||||||
| Deposited On: | 23 Dec 2021 10:57 | |||||||||
| Last Modified: | 23 Dec 2021 10:57 |
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