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dc.contributor.authorStallard, JC
dc.contributor.authorVema, S
dc.contributor.authorHall, DS
dc.contributor.authorDennis, AR
dc.contributor.authorPenrod, ME
dc.contributor.authorGrey, CP
dc.contributor.authorDeshpande, VS
dc.contributor.authorFleck, NA
dc.date.accessioned2022-04-11T12:00:08Z
dc.date.available2022-04-11T12:00:08Z
dc.date.issued2022
dc.date.submitted2022-01-06
dc.identifier.issn0013-4651
dc.identifier.otherjesac6244
dc.identifier.otherac6244
dc.identifier.otherjes-106872.r1
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/335979
dc.description.abstract<jats:p>An experimental protocol is developed to measure the shear strength of NMC811 single crystals within the cathode of a lithium-ion cell. The cathode is placed upon a set of thick metallic substrates that possess a wide range of indentation hardness. For each choice of substrate, the top surface of the cathode is indented by a Vickers indenter to a sufficient depth that the cathode layer is subjected to an approximately spatially uniform compressive normal traction equal to the hardness of the substrate. The sensitivity of plastic flow and fracture of the single crystals to substrate hardness is determined by observation of the particles in the indented top surface of the cathode using a scanning electron microscope. It is found that the shear strength of fully lithiated NMC811 single crystals along their basal plane is 86 ± 12 MPa, and decreases to 39 ± 5 MPa upon cell charging (delithiation of the cathode). This implies that particle slip and fracture will occur under mild mechanical loading, for example by calendering during manufacture and by electrical cycling of the compacted cathode. The indentation protocol developed here has application to a wide range of single crystal cathode materials.</jats:p>
dc.languageen
dc.publisherThe Electrochemical Society
dc.subjectBatteries and Energy Storage
dc.titleEffect of Lithiation upon the Shear Strength of NMC811 Single Crystals
dc.typeArticle
dc.date.updated2022-04-11T12:00:07Z
prism.issueIdentifier4
prism.publicationNameJournal of the Electrochemical Society
prism.volume169
dc.identifier.doi10.17863/CAM.83411
dcterms.dateAccepted2022-03-28
rioxxterms.versionofrecord10.1149/1945-7111/ac6244
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidStallard, JC [0000-0003-2833-0565]
dc.contributor.orcidVema, S [0000-0002-9894-5293]
dc.contributor.orcidHall, DS [0000-0001-9632-0399]
dc.contributor.orcidDennis, AR [0000-0003-4962-7149]
dc.contributor.orcidPenrod, ME [0000-0002-5946-4972]
dc.contributor.orcidGrey, CP [0000-0001-5572-192X]
dc.contributor.orcidDeshpande, VS [0000-0003-3899-3573]
dc.contributor.orcidFleck, NA [0000-0003-0224-1804]
dc.identifier.eissn1945-7111
pubs.funder-project-idFaraday Institution (via University Of Sheffield) (FIRG017 160768)
pubs.funder-project-idFaraday Institution (FIRG001)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/P024947/1)
pubs.funder-project-idFaraday Institution (FIRG024)
pubs.funder-project-idEuropean Commission Horizon 2020 (H2020) ERC (206409)
cam.issuedOnline2022-04-06


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