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Degradation by kinking in layered cathode materials

hal.structure.identifierClean Nano Energy Center
dc.contributor.authorLI, Yanshuai
hal.structure.identifierClean Nano Energy Center
dc.contributor.authorLI, Xiaomei
hal.structure.identifierClean Nano Energy Center
dc.contributor.authorDU, Congcong
hal.structure.identifierClean Nano Energy Center
dc.contributor.authorSUN, Haiming
hal.structure.identifierGeorge W. Woodruff School of Mechanical Engineering
dc.contributor.authorZHANG, Yin
hal.structure.identifierClean Nano Energy Center
dc.contributor.authorLIU, Qiunan
hal.structure.identifierClean Nano Energy Center
dc.contributor.authorYANG, Tingting
hal.structure.identifierClean Nano Energy Center
dc.contributor.authorZHAO, Jun
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELMAS, Claude
hal.structure.identifierLawrence Berkeley National Laboratory [Berkeley] [LBNL]
dc.contributor.authorHARRIS, Stephen
hal.structure.identifierGeorge W. Woodruff School of Mechanical Engineering
dc.contributor.authorCHEN, Hailong
hal.structure.identifierKey Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education
dc.contributor.authorHUANG, Qiao
hal.structure.identifierClean Nano Energy Center
dc.contributor.authorTANG, Yongfu
hal.structure.identifierClean Nano Energy Center
dc.contributor.authorZHANG, Liqiang
hal.structure.identifierGeorge W. Woodruff School of Mechanical Engineering
dc.contributor.authorZHU, Ting
hal.structure.identifierClean Nano Energy Center
hal.structure.identifierKey Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education
dc.contributor.authorHUANG, Jianyu
dc.date.issued2021
dc.identifier.issn2380-8195
dc.description.abstractEnLayered cathode materials are commonly used in lithium and sodium ion batteries, but they are prone to degradation under electrochemical cycling during battery operation. Here we report a new type of degradation mechanism through the electrochemically induced mechanical buckling and delamination cracking of intercalation layers in a P2 Na0.7-Ni0.3Mn0.6Co0.1O2 (Na-NMC) cathode material. Kinks form in the delaminated layers due to severe local bending, and each kink consists of a vertical array of dislocations, resulting from an easy slip between transition metal oxide layers. In situ mechanical compression experiments directly reveal the kink formation due to strong mechanical anisotropy parallel and perpendicular to the intercalation layers in single-crystal Na-NMC. In situ electrochemical experiments indicate that kinks form during the desodiation process. Our results unveil a new mechanism of electrochemically induced mechanical degradation stemming from weak interlayer bonding in layered cathode materials. This work has broad implications for the mitigation of degradation associated with irreversible interlayer slip in layered cathode materials.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enDegradation by kinking in layered cathode materials
dc.typeArticle de revue
dc.identifier.doi10.1021/acsenergylett.1c01976
dc.subject.halChimie/Matériaux
bordeaux.journalACS Energy Letters
bordeaux.page3960–3969
bordeaux.volume6
bordeaux.issue11
bordeaux.peerReviewedoui
hal.identifierhal-03465094
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03465094v1
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