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dc.contributor.authorSpitthoff, Lena
dc.contributor.authorVie, Preben Joakim Svela
dc.contributor.authorWahl, Markus Solberg
dc.contributor.authorWind, Julia
dc.contributor.authorBurheim, Odne Stokke
dc.date.accessioned2023-09-08T08:49:16Z
dc.date.available2023-09-08T08:49:16Z
dc.date.created2023-08-17T10:19:29Z
dc.date.issued2023
dc.identifier.citationJournal of Electroanalytical Chemistry. 2023, 944 .en_US
dc.identifier.issn1572-6657
dc.identifier.urihttps://hdl.handle.net/11250/3088170
dc.description.abstractThis work presents a comprehensive degradation study of two types of large lithium-ion pouch cells; 26 NMC532/Graphite (64 Ah) and 9 NMC433/Graphite (31 Ah) pouch cells. The cells were degraded under different cycling conditions and periodically characterized at room temperature. Specifically, the effect of different ambient temperatures and constraining the cells by clamping was studied. Incremental capacity analysis is an in situ, non-invasive characterization technique that allows the identification of battery degradation modes, and is a technique that does not require additional and advanced equipment. Therefore, in this study we also look into applying the analysis technique on an existing data set. This is done by combining incremental capacity analysis on a qualitative level with the tracking of features of interest in the incremental capacity curve as a function of State of Health and utilizing the simulation of different degradation modes for a more in-depth analysis. We combine simulation and experimental incremental capacity analysis with conclusions from capacity loss and resistance changes with a focus on understanding the benefit and limitations of the incremental capacity analysis for large cells. This is important, as incremental capacity analysis is a relatively fast analysis to qualify large commercial batteries for 2nd life applications. Specifically in this study, we found that degradation and capacity loss do not always correlate. For the 64 Ah Cells cycled at 15 °C and 25 °C, the rate of capacity loss appeared to be similar, although the degradation modes and mechanisms are found to be very different. The clamping was the most important factor for impeding degradation. The 31 Ah Cell cycled at low temperatures showed a very poor cycling performance, where the incremental capacity analysis revealed that Loss of Lithium Inventory from fast and irreversible plating was responsible.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleIncremental capacity analysis (dQ/dV) as a tool for analysing the effect of ambient temperature and mechanical clamping on degradationen_US
dc.title.alternativeIncremental capacity analysis (dQ/dV) as a tool for analysing the effect of ambient temperature and mechanical clamping on degradationen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.pagenumber15en_US
dc.source.volume944en_US
dc.source.journalJournal of Electroanalytical Chemistryen_US
dc.identifier.doi10.1016/j.jelechem.2023.117627
dc.identifier.cristin2167610
dc.relation.projectNorges forskningsråd: 281005en_US
dc.relation.projectNorges forskningsråd: 304213en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal