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dc.contributor.authorBucci, Giovanna
dc.contributor.authorSwamy, Tushar
dc.contributor.authorChiang, Yet-Ming
dc.contributor.authorCarter, W Craig
dc.date.accessioned2018-11-05T13:25:48Z
dc.date.available2018-11-05T13:25:48Z
dc.date.issued2017-09
dc.date.submitted2017-08
dc.identifier.issn0013-4651
dc.identifier.issn1945-7111
dc.identifier.urihttp://hdl.handle.net/1721.1/118867
dc.description.abstractMechanical and electrochemical phenomena are coupled in defining the battery reliability, particularly for solid-state batteries. Micro-cracks act as barriers to Li-ion diffusion in the electrolyte, increasing the average electrode’s tortuosity. In our previous work, we showed that solid electrolytes are likely to suffer from mechanical degradation if their fracture energy is lower than 4 J m−2[G. Bucci, T. Swamy, Y.-M. Chiang, and W. C. Carter, J. Mater. Chem. A (2017)]. Here we study the effect of electrolyte micro-cracking on the effective conductivity of composite electrodes. Via random analyzes, we predict the average diffusivity of lithium in a solid-state electrode to decrease linearly with the extension of mechanical degradation. Furthermore, the statistical distribution of first passage times indicates that the microstructure becomes more and more heterogeneous as damage progresses. In addition to power and capacity loss, a non-uniform increase of the electrode tortuosity can lead to heterogeneous lithiation and further stress localization. The understanding of these phenomena at the mesoscale is essential to the implementation of safe high-energy solid-state batteries.en_US
dc.description.sponsorshipUnited States. Department of Energy. Office of Science (grant DE-SC0002633)en_US
dc.publisherThe Electrochemical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1149/2.1581712JESen_US
dc.rightsCreative Commons Attribution 4.0 International Licenseen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceECSen_US
dc.titleRandom Walk Analysis of the Effect of Mechanical Degradation on All-Solid-State Battery Poweren_US
dc.typeArticleen_US
dc.identifier.citationBucci, Giovanna, Tushar Swamy, Yet-Ming Chiang, and W. Craig Carter. “Random Walk Analysis of the Effect of Mechanical Degradation on All-Solid-State Battery Power.” Journal of The Electrochemical Society 164, no. 12 (2017): A2660–A2664.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Institute for Soldier Nanotechnologiesen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Aeronautics and Astronauticsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Materials Science and Engineeringen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Mechanical Engineeringen_US
dc.contributor.mitauthorBucci, Giovanna
dc.contributor.mitauthorSwamy, Tushar
dc.contributor.mitauthorChiang, Yet-Ming
dc.contributor.mitauthorCarter, W Craig
dc.relation.journalJournal of The Electrochemical Societyen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2018-10-17T13:56:16Z
dspace.orderedauthorsBucci, Giovanna; Swamy, Tushar; Chiang, Yet-Ming; Carter, W. Craigen_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-5248-8621
dc.identifier.orcidhttps://orcid.org/0000-0002-0833-7674
dc.identifier.orcidhttps://orcid.org/0000-0001-7564-7173
mit.licensePUBLISHER_CCen_US


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