One-step grown carbonaceous germanium nanowires and their application as highly efficient lithium-ion battery anodes

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dc.contributor.authorGarcia, Adrià
dc.contributor.authorBiswas, Subhajit
dc.contributor.authorMcNulty, David
dc.contributor.authorRoy, Ahin
dc.contributor.authorRaha, Sreyan
dc.contributor.authorTrabesinger, Sigita
dc.contributor.authorNicolosi, Valeria
dc.contributor.authorSingha, Achintya
dc.contributor.authorHolmes, Justin D.
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2022-03-28T12:47:56Z
dc.date.available2022-03-28T12:47:56Z
dc.date.issued2022-01-19
dc.date.updated2022-03-25T18:29:56Z
dc.description.abstractDeveloping a simple, cheap, and scalable synthetic method for the fabrication of functional nanomaterials is crucial. Carbon-based nanowire nanocomposites could play a key role in integrating group IV semiconducting nanomaterials as anodes into Li-ion batteries. Here, we report a very simple, one-pot solvothermal-like growth of carbonaceous germanium (C-Ge) nanowires in a supercritical solvent. C-Ge nanowires are grown just by heating (380–490 °C) a commercially sourced Ge precursor, diphenylgermane (DPG), in supercritical toluene, without any external catalysts or surfactants. The self-seeded nanowires are highly crystalline and very thin, with an average diameter between 11 and 19 nm. The amorphous carbonaceous layer coating on Ge nanowires is formed from the polymerization and condensation of light carbon compounds generated from the decomposition of DPG during the growth process. These carbonaceous Ge nanowires demonstrate impressive electrochemical performance as an anode material for Li-ion batteries with high specific charge values (>1200 mAh g–1 after 500 cycles), greater than most of the previously reported for other “binder-free” Ge nanowire anode materials, and exceptionally stable capacity retention. The high specific charge values and impressively stable capacity are due to the unique morphology and composition of the nanowires.en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationGarcia, A., Biswas, S., McNulty, D., Roy, A., Raha, S., Trabesinger, S., Nicolosi, V., Singha, A. and Holmes, J. D. (2022) 'One-step grown carbonaceous germanium nanowires and their application as highly efficient lithium-ion battery anodes', ACS Applied Energy Materials, 5(2), pp. 1922-1932. doi: 10.1021/acsaem.1c03404en
dc.identifier.doi10.1021/acsaem.1c03404en
dc.identifier.eissn2574-0962
dc.identifier.endpage1932en
dc.identifier.issued2en
dc.identifier.journaltitleACS Applied Energy Materialsen
dc.identifier.startpage1922en
dc.identifier.urihttps://hdl.handle.net/10468/12999
dc.identifier.volume5en
dc.language.isoenen
dc.publisherACS Publicationsen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/14/IA/2513/IE/Silicon Compatible, Direct Band-Gap Nanowire Materials For Beyond-CMOS Devices/en
dc.relation.urihttps://pubs.acs.org/doi/abs/10.1021/acsaem.1c03404
dc.rights© 2022, the Authors. Published by American Chemical Society.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectNanowireen
dc.subjectGermaniumen
dc.subjectSelf-seeded growthen
dc.subjectSupercritical fluiden
dc.subjectLi-ion batteryen
dc.titleOne-step grown carbonaceous germanium nanowires and their application as highly efficient lithium-ion battery anodesen
dc.typeArticle (peer-reviewed)en
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