Influence of binders and solvents on stability of Ru/RuOx nanoparticles on ITO nanocrystals as Li–O2 battery cathodes

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dc.contributor.author Vankova, Svetoslava
dc.contributor.author Francia, Carlotta
dc.contributor.author Amici, Julia
dc.contributor.author Zeng, Juqin
dc.contributor.author Bodoardo, Silvia
dc.contributor.author Penazzi, Nerino
dc.contributor.author Collins, Gillian
dc.contributor.author Geaney, Hugh
dc.contributor.author O'Dwyer, Colm
dc.date.accessioned 2017-02-17T10:32:44Z
dc.date.available 2017-02-17T10:32:44Z
dc.date.issued 2017-01-23
dc.identifier.citation Vankova, S., Francia, C., Amici, J., Zeng, J., Bodoardo, S., Penazzi, N., Collins, G., Geaney, H. and O'Dwyer, C. (2017) 'Influence of Binders and Solvents on Stability of Ru/RuOx Nanoparticles on ITO Nanocrystals as Li–O2 Battery Cathodes', ChemSusChem, 10(3), pp. 575-586. doi:10.1002/cssc.201601301 en
dc.identifier.volume 10 en
dc.identifier.startpage 575 en
dc.identifier.endpage 586 en
dc.identifier.issn 1864-5631
dc.identifier.uri http://hdl.handle.net/10468/3650
dc.identifier.doi 10.1002/cssc.201601301
dc.description.abstract Fundamental research on Li–O2 batteries remains critical, and the nature of the reactions and stability are paramount for realising the promise of the Li–O2 system. We report that indium tin oxide (ITO) nanocrystals with supported 1–2 nm oxygen evolution reaction (OER) catalyst Ru/RuOx nanoparticles (NPs) demonstrate efficient OER processes, reduce the recharge overpotential of the cell significantly and maintain catalytic activity to promote a consistent cycling discharge potential in Li–O2 cells even when the ITO support nanocrystals deteriorate from the very first cycle. The Ru/RuOx nanoparticles lower the charge overpotential compared with those for ITO and carbon-only cathodes and have the greatest effect in DMSO electrolytes with a solution-processable F-free carboxymethyl cellulose (CMC) binder (<3.5 V) instead of polyvinylidene fluoride (PVDF). The Ru/RuOx/ITO nanocrystalline materials in DMSO provide efficient Li2O2 decomposition from within the cathode during cycling. We demonstrate that the ITO is actually unstable from the first cycle and is modified by chemical etching, but the Ru/RuOx NPs remain effective OER catalysts for Li2O2 during cycling. The CMC binders avoid PVDF-based side-reactions and improve the cyclability. The deterioration of the ITO nanocrystals is mitigated significantly in cathodes with a CMC binder, and the cells show good cycle life. In mixed DMSO–EMITFSI [EMITFSI=1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide] ionic liquid electrolytes, the Ru/RuOx/ITO materials in Li–O2 cells cycle very well and maintain a consistently very low charge overpotential of 0.5–0.8 V. en
dc.description.sponsorship Science Foundation Ireland ((SFI Technology Innovation and Development Award under contract no. 13/TIDA/E2761), (SFI research grant under Grant Number 14/IA/2581)); Irish Research Council (New Foundations Award); National University of Ireland (Fellowship in the Sciences) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Wiley-VCH Verlag en
dc.rights © 2017 Wiley-VCH Verlag GmbH &Co. KGaA, Weinheim. This is the peer reviewed version of the following article: ChemSusChem 2017, 10, 575, which has been published in final form at http://dx.doi.org/10.1002/cssc.201601301. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. en
dc.subject Batteries en
dc.subject Lithium en
dc.subject Nanoparticles en
dc.subject Oxygen en
dc.subject Evolution en
dc.subject Reaction en
dc.subject Ruthenium en
dc.title Influence of binders and solvents on stability of Ru/RuOx nanoparticles on ITO nanocrystals as Li–O2 battery cathodes en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Colm O'Dwyer, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: c.odwyer@ucc.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 12 months after publication by the request of the publisher. en
dc.check.date 2018-01-23
dc.date.updated 2017-02-17T10:04:48Z
dc.description.version Accepted Version en
dc.internal.rssid 382782226
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Irish Research Council en
dc.contributor.funder National University of Ireland en
dc.contributor.funder European Commission en
dc.contributor.funder Seventh Framework Programme en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Chemsuschem en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress c.odwyer@ucc.ie en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP1::NMP/314508/EU/STable high-capacity lithium-Air Batteries with Long cycle life for Electric cars/STABLE en


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