High performance germanium nanowire based lithium-ion battery anodes extending over 1000 cycles through in-situ formation of a continuous porous network

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dc.contributor.author Kennedy, Tadhg
dc.contributor.author Mullane, Emma
dc.contributor.author Geany, Hugh
dc.contributor.author Osiak, Michal J.
dc.contributor.author O'Dwyer, Colm
dc.contributor.author Ryan, Kevin M.
dc.date.accessioned 2018-05-15T13:49:25Z
dc.date.available 2018-05-15T13:49:25Z
dc.date.issued 2014-01-13
dc.identifier.citation Kennedy, T., Mullane, E., Geaney, H., Osiak, M., O’Dwyer, C. and Ryan, K. M. (2014) 'High-Performance Germanium Nanowire-Based Lithium-Ion Battery Anodes Extending over 1000 Cycles Through in Situ Formation of a Continuous Porous Network', Nano Letters, 14(2), pp. 716-723. doi: 10.1021/nl403979s en
dc.identifier.volume 14 en
dc.identifier.issued 2 en
dc.identifier.startpage 716 en
dc.identifier.endpage 723 en
dc.identifier.issn 1530-6984
dc.identifier.uri http://hdl.handle.net/10468/6113
dc.identifier.doi 10.1021/nl403979s
dc.description.abstract Here we report the formation of high-performance and high-capacity lithium-ion battery anodes from high-density germanium nanowire arrays grown directly from the current collector. The anodes retain capacities of ∼900 mAh/g after 1100 cycles with excellent rate performance characteristics, even at very high discharge rates of 20–100C. We show by an ex situ high-resolution transmission electron microscopy and high-resolution scanning electron microscopy study that this performance can be attributed to the complete restructuring of the nanowires that occurs within the first 100 cycles to form a continuous porous network that is mechanically robust. Once formed, this restructured anode retains a remarkably stable capacity with a drop of only 0.01% per cycle thereafter. As this approach encompasses a low energy processing method where all the material is electrochemically active and binder free, the extended cycle life and rate performance characteristics demonstrated makes these anodes highly attractive for the most demanding lithium-ion applications such as long-range battery electric vehicles. en
dc.description.sponsorship Intel Ireland and the Irish Research Council (Enterprise Partnership Scheme) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Chemical Society (ACS) en
dc.relation.uri http://pubs.acs.org/doi/abs/10.1021/nl403979s
dc.rights © 2014 American Chemical Society. 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 https://pubs.acs.org/doi/abs/10.1021/nl403979s en
dc.subject Germanium nanowires en
dc.subject Lithium-ion battery en
dc.subject Network en
dc.subject Porous en
dc.subject Rate capability en
dc.subject Tin seed en
dc.title High performance germanium nanowire based lithium-ion battery anodes extending over 1000 cycles through in-situ formation of a continuous porous network 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.date.updated 2018-05-03T11:07:54Z
dc.description.version Accepted Version en
dc.internal.rssid 243811184
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Seventh Framework Programme en
dc.contributor.funder Intel Corporation en
dc.contributor.funder Irish Research Council en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Nano letters en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress c.odwyer@ucc.ie en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Principal Investigator Programme (PI)/11/PI/1148/IE/Growth, Oriented Attachment and Large scale Vertical Assembly of Ternary and Quaternary Semiconductor Nanorods for Low Cost Photovoltaics/ en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP1::NMP/285268/EU/Advanced manufacturing processes for Low Cost Greener Li-Ion batteries/GREENLION en

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