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Copper silicide nanowires as hosts for amorphous Si deposition as a route to produce high capacity lithium-ion battery anodes

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dc.contributor.author Stokes, Killian
dc.contributor.author Geaney, Hugh
dc.contributor.author Sheehan, Martin
dc.contributor.author Borsa, Dana
dc.contributor.author Ryan, Kevin M.
dc.date.accessioned 2020-10-23T10:15:44Z
dc.date.issued 2019
dc.identifier.citation Stokes, Killian and Geaney, Hugh and Sheehan, Martin and Borsa, Dana and Ryan, Kevin M (2019) 'Copper Silicide Nanowires as Hosts for Amorphous Si Deposition as a Route to Produce High Capacity Lithium-Ion Battery Anodes'. Nano letters, 19 (12):8829-8835. en_US
dc.identifier.uri http://hdl.handle.net/10344/9360
dc.description peer-reviewed en_US
dc.description The full text of this article will not be available in ULIR until the embargo expires on the 31/10/2020
dc.description.abstract Herein, copper silicide (Cu15Si4) nanowires (NWs) grown in high densities from a metallic Cu substrate are utilized as nanostructured hosts for amorphous silicon (aSi) deposition. The conductive Cu15Si4 NW scaffolds offer an increased surface area, versus planar substrates, and enable the preparation of high capacity Li-ion anodes consisting of a nanostructured active material. The formation method involves a two-step process where Cu15Si4 nanowires are synthesized from a Cu substrate via a solvent vapor growth (SVG) approach followed by the plasma enhanced chemical vapor deposition (PECVD) of aSi. These binder-free anodes are investigated in half-cell (versus Li-foil) and full-cell (versus LCO) configurations with discharge capacities greater than 2000 mAh/g retained after 200 cycles (half-cell) and reversible capacities of 1870 mAh/g exhibited after 100 cycles (full-cell). Noteworthy rate capability is also attained where capacities of up to 1367 mAh/g and 1520 mAh/g are exhibited at 5C in half-cell and full-cell configurations respectively, highlighting the active material’s promise for fast charging and high power applications. The anode material is characterized prior to cycling and after 1, 25 and 100 charge/discharge cycles, by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), to track the effects of cycling on the material. en_US
dc.language.iso eng en_US
dc.publisher American Chemical Society en_US
dc.relation 814464 en_US
dc.relation.ispartofseries Nano Letters;19 (12), pp. 8829-8835
dc.relation.uri http://dx.doi.org/10.1021/acs.nanolett.9b03664
dc.rights © 2019 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 http://dx.doi.org/10.1021/acs.nanolett.9b03664 en_US
dc.subject PECVD en_US
dc.subject silicon en_US
dc.subject nanostructured en_US
dc.subject fast-charge en_US
dc.subject full-cell en_US
dc.subject ex situ en_US
dc.subject lithium ion en_US
dc.subject alloying anode en_US
dc.title Copper silicide nanowires as hosts for amorphous Si deposition as a route to produce high capacity lithium-ion battery anodes 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
dc.date.updated 2020-10-23T09:36:24Z
dc.description.version ACCEPTED
dc.identifier.doi 10.1021/acs.nanolett.9b03664
dc.contributor.sponsor SFI en_US
dc.contributor.sponsor ERC en_US
dc.contributor.sponsor IRC en_US
dc.contributor.sponsor EI en_US
dc.contributor.sponsor European Union (EU)
dc.contributor.sponsor Horizon 2020
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
dc.relation.projectid 814464 en_US
dc.relation.projectid 18/SIRG/5484 en_US
dc.relation.projectid CF20144014 en_US
dc.date.embargoEndDate 2020-10-31
dc.embargo.terms 2020-10-31 en_US
dc.rights.accessrights info:eu-repo/semantics/embargoedAccess en_US
dc.internal.rssid 2950580
dc.internal.copyrightchecked Yes
dc.identifier.journaltitle Nano letters
dc.description.status peer-reviewed


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