High charge and discharge rate limitations in ordered macroporous li-ion battery materials

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dc.contributor.authorO'Hanlon, Sally
dc.contributor.authorMcNulty, David
dc.contributor.authorTian, Ruiyuan
dc.contributor.authorColeman, Jonathan
dc.contributor.authorO'Dwyer, Colm
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderEuropean Regional Development Funden
dc.date.accessioned2020-12-02T13:52:10Z
dc.date.available2020-12-02T13:52:10Z
dc.date.issued2020-11-09
dc.date.updated2020-11-28T19:22:37Z
dc.description.abstractAdding porosity to battery electrodes is sometimes useful for accommodating volumetric expansion, electrolyte access to active materials, or mitigating poor high-rate performance for thicker electrodes. Ordered macroporous electrode such as inverse opals, are a good model system: binder and conductive additive-free, interconnected electrically, have defined porosity consistent with thickness, good electrolyte wettability and surprisingly good behavior in half-cells and some Li-battery cells at normal rates. We show that at high charge and discharge rates, charge storage in macroporous electrode materials can be completely supressed, and then entirely recovered at low rates. Using a model system of inverse opal V2O5 in a flooded Li-battery three-electrode cell electrodes store almost no charge at rates >10 C, but capacity completely recovers when the rate is reduced to <1 C. We show how the IO material is modified under lithiation using X-ray diffraction, Raman scattering and electron microscopy. Chronoamperometric measurements together with a model to fit rate-dependent capacity decay suggests a dependence on the intrinsic out-of-plane conductivity of the electrode. The data show that electrodes with nanoscale dimensions and macroscale porosity are fundamentally limited for high-rate performance if the intrinsic electronic conductivity is poor, even when fully soaked with electrolyteen
dc.description.sponsorshipScience Foundation Ireland (SFI under Grant Number 14/IA/2581; co-funded under the European Regional Development Fund under the AMBER award, Grant Number 12/RC/2278_2)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid140532en
dc.identifier.citationO’Hanlon, S., McNulty, D., Tian, R., Coleman, J. and O’Dwyer, C. (2020) 'High Charge and Discharge Rate Limitations in Ordered Macroporous Li-ion Battery Materials', Journal of The Electrochemical Society, 167(14), 140532 (14 pp). doi: 10.1149/1945-7111/abc6cben
dc.identifier.doi10.1149/1945-7111/abc6cben
dc.identifier.eissn1945-7111
dc.identifier.endpage14en
dc.identifier.issn0013-4651
dc.identifier.issued14en
dc.identifier.journaltitleJournal of the Electrochemical Societyen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/10806
dc.identifier.volume167en
dc.language.isoenen
dc.publisherIOP Publishingen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/14/IA/2581/IE/Diffractive optics and photonic probes for efficient mouldable 3D printed battery skin materials for portable electronic devices/en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2278/IE/Advanced Materials and BioEngineering Research Centre (AMBER)/en
dc.relation.urihttps://iopscience.iop.org/article/10.1149/1945-7111/abc6cb
dc.rights© 2020 The Author(s). 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 (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectConductivityen
dc.subjectElectron microscopyen
dc.subjectRaman scatteringen
dc.subjectLi-batteryen
dc.titleHigh charge and discharge rate limitations in ordered macroporous li-ion battery materialsen
dc.title.alternativeO’Hanlon, Sally McNulty, David Tian, Ruiyuan Coleman, Jonathan O’Dwyer, Colmen
dc.typeArticle (peer-reviewed)en
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