Self-discharge effects in lithium-sulfur equivalent circuit networks for state estimation

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dc.contributor.authorYousif, S. E. A.
dc.contributor.authorFotouhi, Abbas
dc.contributor.authorAuger, Daniel J.
dc.contributor.authorPropp, Karsten
dc.date.accessioned2018-01-22T13:21:21Z
dc.date.available2018-01-22T13:21:21Z
dc.date.issued2017-11-30
dc.description.abstractThis study considers application-oriented models of lithium-sulfur (Li-S) cells. Existing ECN models often neglect self-discharge, but this can be important in applications. After describing the context in which control-oriented models and estimators are based, the self-discharge phenomenon is investigated for a new 21 Ah Li-S cell. As a contribution of this study, an equivalent-circuit-network (ECN) model was extended to account for cells’ self-discharge. Formal system identification techniques were used to parameterize a model from experimental data. The original model was then extended by adding terms to represent a self-discharge resistance. To obtain the self-discharge resistance, a particular new series of experiments were designed and performed on the Li-S cell at various temperature and initial state-of-charge (SoC) levels. The results demonstrate the dependency of self-discharge rate on the SoC and temperature. The self-discharge rate is much higher at high SoC levels and it increases as temperature decreases.en_UK
dc.identifier.citationS. E. A. Yousif, A Fououhi, D. J. Auger and K Propp. Self-discharge effects in lithium-sulfur equivalent circuit networks for state estimation. Journal of The Electrochemical Society, 2018, Volume 165, Issue 1, A6081-A6090en_UK
dc.identifier.issn0013-4651
dc.identifier.urihttp://dx.doi.org/10.1149/2.0121801jes
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/12915
dc.language.isoenen_UK
dc.publisherElectrochemical Societyen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectlithium-sulfuren_UK
dc.subjectself-dischargeen_UK
dc.subjectstate estimationen_UK
dc.titleSelf-discharge effects in lithium-sulfur equivalent circuit networks for state estimationen_UK
dc.typeArticleen_UK

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