Electrochemical Model-Based Investigation of Thick LiFePO4 Electrode Design Parameters

dc.contributor.authorFranke-Lang, Robert
dc.contributor.authorKowal, Julia
dc.date.accessioned2021-12-29T10:09:27Z
dc.date.available2021-12-29T10:09:27Z
dc.date.issued2021-04-25
dc.description.abstractThe electrification of the powertrain requires enhanced performance of lithium-ion batteries, mainly in terms of energy and power density. They can be improved by optimising the positive electrode, i.e., by changing their size, composition or morphology. Thick electrodes increase the gravimetric energy density but generally have an inefficient performance. This work presents a 2D modelling approach for better understanding the design parameters of a thick LiFePO4 electrode based on the P2D model and discusses it with common literature values. With a superior macrostructure providing a vertical transport channel for lithium ions, a simple approach could be developed to find the best electrode structure in terms of macro- and microstructure for currents up to 4C. The thicker the electrode, the more important are the direct and valid transport paths within the entire porous electrode structure. On a smaller scale, particle size, binder content, porosity and tortuosity were identified as very impactful parameters, and they can all be attributed to the microstructure. Both in modelling and electrode optimisation of lithium-ion batteries, knowledge of the real microstructure is essential as the cross-validation of a cellular and lamellar freeze-casted electrode has shown. A procedure was presented that uses the parametric study when few model parameters are known.en
dc.description.sponsorshipDFG, 414044773, Open Access Publizieren 2021 - 2022 / Technische Universität Berlinen
dc.identifier.eissn2673-3951
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/16021
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-14795
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc537 Elektrizität, Elektronikde
dc.subject.otherlithium-ion batteryen
dc.subject.otherelectrode optimisationen
dc.subject.otherelectrochemical modelen
dc.subject.othermicrostructureen
dc.subject.othermacrostructureen
dc.subject.otheraligned porous electrodeen
dc.subject.otherLiFePO4en
dc.titleElectrochemical Model-Based Investigation of Thick LiFePO4 Electrode Design Parametersen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.3390/modelling2020014en
dcterms.bibliographicCitation.issue2en
dcterms.bibliographicCitation.journaltitleModellingen
dcterms.bibliographicCitation.originalpublishernameMDPIen
dcterms.bibliographicCitation.originalpublisherplaceBaselen
dcterms.bibliographicCitation.pageend287en
dcterms.bibliographicCitation.pagestart259en
dcterms.bibliographicCitation.volume2en
tub.accessrights.dnbfreeen
tub.affiliationFak. 4 Elektrotechnik und Informatik::Inst. Energie- und Automatisierungstechnik::FG Elektrische Energiespeichertechnikde
tub.affiliation.facultyFak. 4 Elektrotechnik und Informatikde
tub.affiliation.groupFG Elektrische Energiespeichertechnikde
tub.affiliation.instituteInst. Energie- und Automatisierungstechnikde
tub.publisher.universityorinstitutionTechnische Universität Berlinen
Files
Original bundle
Now showing 1 - 1 of 1
Loading…
Thumbnail Image
Name:
modelling-02-00014.pdf
Size:
9.19 MB
Format:
Adobe Portable Document Format
Description:
License bundle
Now showing 1 - 1 of 1
Loading…
Thumbnail Image
Name:
license.txt
Size:
4.86 KB
Format:
Item-specific license agreed upon to submission
Description:
Collections