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dc.contributor.authorDhillon, Shweta
dc.contributor.authorHernández, Guiomar
dc.contributor.authorWagner, Nils Peter
dc.contributor.authorSvensson, Ann Mari
dc.contributor.authorBrandell, Daniel
dc.date.accessioned2022-08-12T07:07:40Z
dc.date.available2022-08-12T07:07:40Z
dc.date.created2021-08-19T12:57:32Z
dc.date.issued2021
dc.identifier.citationElectrochimica Acta. 2021, 377 1-9.en_US
dc.identifier.issn0013-4686
dc.identifier.urihttps://hdl.handle.net/11250/3011510
dc.description.abstractSilicon-based composite electrodes in lithium ion batteries attract increasing attention because of their high theoretical capacity. Here, numerical simulations are used to better understand the interplay between electrochemical and morphological behavior of the silicon-graphite (1:2.7) composite electrode during galvanostatic cycling. Finite element methodology is used to solve a one-dimensional model based on the porous electrode and concentrated solution theory. Porosity changes in the silicon electrode and solid electrolyte interphase layer growth are also included in the model. The simulation results show that at lower rates, the electrode with high initial porosity is being fully utilized before the lower cut-off potential is reached. When comparing the computational results with experimental observations, it can be seen that the main reason for capacity fade is the increase in tortuosity in the diffusion pathway of lithium ions due to cracking of the silicon composite electrode upon electrochemical cycling.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.subjectEffective diffusivityen_US
dc.subjectMicrocracksen_US
dc.subjectElectrode morphologyen_US
dc.subjectFinite element modellingen_US
dc.subjectSilicon-composite electrodeen_US
dc.titleModelling capacity fade in silicon-graphite composite electrodes for lithium-ion batteriesen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2021 The Authors. Published by Elsevier Ltden_US
dc.source.pagenumber1-9en_US
dc.source.volume377en_US
dc.source.journalElectrochimica Actaen_US
dc.identifier.doi10.1016/j.electacta.2021.138067
dc.identifier.cristin1927293
dc.relation.projectNorges forskningsråd: 255195en_US
dc.relation.projectNorges forskningsråd: 257653en_US
dc.source.articlenumber138067en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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