The effect of TiO2 and GeO2 composite mixing on the behavior of macroporous Li-Ion battery anode materials

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dc.contributor.authorCarroll, Aoife
dc.contributor.authorGrant, Alex
dc.contributor.authorZhang, Yan
dc.contributor.authorGulzar, Umair
dc.contributor.authorDouglas-Henry, Danielle
dc.contributor.authorNicolosi, Valeria
dc.contributor.authorO'Dwyer, Colm
dc.contributor.funderIrish Research Council
dc.contributor.funderHorizon 2020
dc.contributor.funderScience Foundation Ireland
dc.date.accessioned2024-04-30T11:47:23Z
dc.date.available2024-04-27T18:12:17Zen
dc.date.available2024-04-30T11:47:23Z
dc.date.issued2023-12-19
dc.date.updated2024-04-27T17:12:19Zen
dc.description.abstractHighly ordered, macroporous inverse opal structures can be made as TiO2/GeO2 nanocomposites with various GeO2 content and provide Coulombic and voltage stable response where the Ge content and its distribution influence the overall capacity at both slow and fast rates. These interconnected binder-free anodes were characterized using X-ray diffraction, high resolution transmission electron microscopy, selected area electron diffraction, energy dispersive X-ray spectroscopy and electron energy loss spectroscopy. The electrochemical response in half cells over 2000 cycles and various rates showed how the mixture affected key metrics for the material in battery cells. The data shows that a composite of intercalation and alloying compounds can provide good capacity (between theoretical maxima for either material alone) and excellent coulombic efficiency (>99%), even with low quantities of the higher capacity alloying compound. Compositional gradients or spatial heterogeneities in the distribution of one material in the composite are shown to affect capacity during cycling life, where a coulombically efficient increasing capacity is found as the higher capacity material becomes electrochemically active within the composite matrix as the material is modified during cycling.
dc.description.sponsorshipIrish Research Council (Advanced Laureate Award IRCLA/19/118; Government of Ireland Postdoctoral Fellowship GOIPD/2021/438); Science Foundation Ireland (FFT R21/196)
dc.description.statusPeer revieweden
dc.description.versionPublished Version
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid120521
dc.identifier.citationCarroll, A., Grant, A., Zhang, Y., Gulzar, U., Douglas-Henry, D., Nicolosi, V. and O’Dwyer, C. (2023) 'The effect of TiO2 and GeO2 composite mixing on the behavior of macroporous Li-Ion battery anode materials', Journal of the Electrochemical Society, 170(12), 120521(14pp). https://doi.org/10.1149/1945-7111/ad1371
dc.identifier.doi10.1149/1945-7111/ad1371
dc.identifier.eissn1945-7111
dc.identifier.endpage14
dc.identifier.issn0013-4651
dc.identifier.issued12
dc.identifier.journaltitleJournal of the Electrochemical Society
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/15828
dc.identifier.volume170
dc.language.isoenen
dc.publisherIOP Publishing
dc.relation.projectinfo:eu-repo/grantAgreement/EC/H2020::RIA/825114/EU/Smart Autonomous Multi Modal Sensors for Vital Signs Monitoring/SmartVista
dc.relation.projectinfo:eu-repo/grantAgreement/EC/H2020::ERC::ERC-COG/681544/EU/3D Printing of Novel 2D Nanomaterials: Adding Advanced 2D Functionalities to Revolutionary Tailored 3D Manufacturing/3D2DPrint
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres Programme::Phase 2/12/RC/2278_P2/IE/AMBER_Phase 2/
dc.rights© 2023, the Authors. Published on behalf of The Electrochemical Society by IOP Publishing Limited. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/ by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectTiO2 and GeO2 composite mixing
dc.subjectMacroporous Li-Ion battery anode materials
dc.titleThe effect of TiO2 and GeO2 composite mixing on the behavior of macroporous Li-Ion battery anode materials
dc.typeArticle (peer-reviewed)
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