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Lithium gradients in active material, local anisotropy and DFN model accuracy: theory, simulations and DFN extension.

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/
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:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Traskunov, IgorIgor.Traskunov (at) dlr.dehttps://orcid.org/0000-0002-0320-2607
Latz, ArnulfArnulf.Latz (at) dlr.dehttps://orcid.org/0000-0003-1449-8172
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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