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.authorKennedy, Tadhg
dc.contributor.authorMullane, Emma
dc.contributor.authorGeany, Hugh
dc.contributor.authorOsiak, Michal J.
dc.contributor.authorO'Dwyer, Colm
dc.contributor.authorRyan, Kevin M.
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderSeventh Framework Programmeen
dc.contributor.funderIntel Corporationen
dc.contributor.funderIrish Research Councilen
dc.date.accessioned2018-05-15T13:49:25Z
dc.date.available2018-05-15T13:49:25Z
dc.date.issued2014-01-13
dc.date.updated2018-05-03T11:07:54Z
dc.description.abstractHere 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.sponsorshipIntel Ireland and the Irish Research Council (Enterprise Partnership Scheme)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKennedy, 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/nl403979sen
dc.identifier.doi10.1021/nl403979s
dc.identifier.endpage723en
dc.identifier.issn1530-6984
dc.identifier.issued2en
dc.identifier.journaltitleNano lettersen
dc.identifier.startpage716en
dc.identifier.urihttps://hdl.handle.net/10468/6113
dc.identifier.volume14en
dc.language.isoenen
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.projectinfo: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.projectinfo:eu-repo/grantAgreement/EC/FP7::SP1::NMP/285268/EU/Advanced manufacturing processes for Low Cost Greener Li-Ion batteries/GREENLIONen
dc.relation.urihttp://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/nl403979sen
dc.subjectGermanium nanowiresen
dc.subjectLithium-ion batteryen
dc.subjectNetworken
dc.subjectPorousen
dc.subjectRate capabilityen
dc.subjectTin seeden
dc.titleHigh performance germanium nanowire based lithium-ion battery anodes extending over 1000 cycles through in-situ formation of a continuous porous networken
dc.typeArticle (peer-reviewed)en
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