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Influence of carbonate-based additives on the electrochemical performance of Si NW anodes cycled in an ionic liquid electrolyte.

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Show simple item record Stokes, Killian Kennedy, Tadhg Kim, Guk-Tae Geaney, Hugh Storan, Dylan Laffir, Fathima R. Appetecchi, Giovanni Battista Passerini, Stefano Ryan, Kevin M. 2020-10-23T11:24:35Z 2020
dc.identifier.citation Stokes, K., Kennedy, T., Kim, G.T., Geaney, H., Storan, D., Laffir, F., Appetecchi, G.B., Passerini, S. and Ryan, K.M.; (2020) 'Influence of Carbonate-Based Additives on the Electrochemical Performance of Si NW Anodes Cycled in an Ionic Liquid Electrolyte'. Nano Letters. en_US
dc.identifier.issn 1530-6992
dc.description peer-reviewed en_US
dc.description.abstract Addition of electrolyte additives (ethylene or vinylene carbonate) is shown to dramatically improve the cycling stability and capacity retention (1600 mAh g-1) of Si nanowires (NWs) in a safe ionic liquid (IL) electrolyte (0.1LiTFSI-0.6PYR13FSI-0.3PYR13TFSI). We show, using postmortem SEM and TEM, a distinct difference in morphologies of the active material after cycling in the presence or absence of the additives. The difference in performance is shown by postmortem XPS analysis to arise from a notable increase in irreversible silicate formation in the absence of the carbonate additives. The composition of the solid electrolyte interphase (SEI) formed at the active material surface was further analyzed using XPS as a function of the IL components revealing that the SEI was primarily made up of N-, F-, and S-containing compounds from the degradation of the TFSI and FSI anions. en_US
dc.description.sponsorship Horizon 2020
dc.description.sponsorship European Union (EU)
dc.language.iso eng en_US
dc.relation.ispartofseries Nano Letters;20 (10), pp. 7011-7019
dc.rights © Year ACS This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see en_US
dc.subject ionic liquid en_US
dc.subject electrolyte en_US
dc.subject silicon nanowires en_US
dc.subject SEI en_US
dc.subject xx-situ en_US
dc.title Influence of carbonate-based additives on the electrochemical performance of Si NW anodes cycled in an ionic liquid electrolyte. en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US 2020-10-23T11:12:22Z
dc.description.version ACCEPTED
dc.identifier.doi 10.1021/acs.nanolett.0c01774
dc.contributor.sponsor ERC en_US
dc.contributor.sponsor European Union (EU) en_US
dc.contributor.sponsor SFI en_US
dc.contributor.sponsor IRC en_US
dc.contributor.sponsor European Union (EU)
dc.contributor.sponsor Horizon 2020
dc.relation.projectid 814464 en_US
dc.relation.projectid 18/SIRG/5484 en_US
dc.relation.projectid CF20144014 en_US
dc.relation.projectid 16/IA/4629 en_US
dc.relation.projectid 11-PI-1148 en_US
dc.relation.projectid 16/M-ERA/3419 en_US 2021-07-10
dc.embargo.terms 2021-07-10 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 2969442
dc.internal.copyrightchecked Yes
dc.identifier.journaltitle Nano Letters
dc.description.status peer-reviewed

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