The effect of particle size, morphology and C-rates on 3D structured Co 3 O 4 inverse opal conversion mode anode materials

Show simple item record McNulty, David Geaney, Hugh Carroll, Elaine Garvey, Shane Lonergan, Alex O'Dwyer, Colm 2018-05-16T13:28:24Z 2018-05-16T13:28:24Z 2017-02
dc.identifier.citation David, M., Hugh, G., Elaine, C., Shane, G., Alex, L. and Colm, O. D. (2017) 'The effect of particle size, morphology and C-rates on 3D structured Co 3 O 4 inverse opal conversion mode anode materials', Materials Research Express, 4(2), 025011 (11pp). doi: 10.1088/2053-1591/aa5a26 en
dc.identifier.volume 4 en
dc.identifier.startpage 025011-1 en
dc.identifier.endpage 025011-11 en
dc.identifier.issn 2053-1591
dc.identifier.doi 10.1088/2053-1591/aa5a26
dc.description.abstract Engineering Co3O4 nanoparticles into highly ordered, 3D inverse opal (IO) structures is shown to significantly improve their performance as more efficient conversion mode Li-ion anode materials. By comparison with Co3O4 microparticles, the advantages of the porous anode architecture are clearly shown. The inverse opal material markedly enhances specific capacity and capacity retention. The impact of various C rates on the rate of the initial charge demonstrates that higher rate charging (10 C) was much less destructive to the inverse opal structure than charging at a slow rate (0.1 C). Slower C rates that affect the IO structure resulted in higher specific capacities (more Li2O) as well as improved capacity retention. The IO structures cycle as CoO, which improves Coulombic efficiency and limits volumetric changes, allowing rate changes more efficiently. This work demonstrates how 3D IOs improve conversion mode anode material performance in the absence of additive or binders, thus enhancing mass transport of Li2O charge–discharge product through the open structure. This effect mitigates clogging by structural changes at slow rates (high capacity) and is beneficial to the overall electrochemical performance. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher IOP Publishing en
dc.rights © 2017 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article accepted for publication in Materials Research Express. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at en
dc.subject Inverse opal en
dc.subject Energy storage en
dc.subject Materials chemistry en
dc.title The effect of particle size, morphology and C-rates on 3D structured Co 3 O 4 inverse opal conversion mode anode materials en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Colm O'Dwyer, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en 2018-05-15T23:07:15Z
dc.description.version Accepted Version en
dc.internal.rssid 383800112
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Materials Research Express en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Technology and Innovation Development Award (TIDA)/13/TIDA/E2761/IE/LiONSKIN - Moldable Li-ion battery outer skin for electronic devices/ en
dc.relation.project info: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

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