Germanium tin alloy nanowires as anode materials for high performance Li-ion batteries
dc.contributor.author | Doherty, Jessica | |
dc.contributor.author | McNulty, David | |
dc.contributor.author | Biswas, Subhajit | |
dc.contributor.author | Moore, Kalani | |
dc.contributor.author | Conroy, Michele | |
dc.contributor.author | Bangert, Ursel | |
dc.contributor.author | O'Dwyer, Colm | |
dc.contributor.author | Holmes, Justin D. | |
dc.contributor.funder | Science Foundation Ireland | en |
dc.contributor.funder | Irish Research Council | en |
dc.date.accessioned | 2020-01-10T10:01:13Z | |
dc.date.available | 2020-01-10T10:01:13Z | |
dc.date.issued | 43830 | |
dc.date.updated | 2020-01-07T12:56:37Z | |
dc.description.abstract | The combination of two active Li-ion materials (Ge and Sn) can result in improved conduction paths and higher capacity retention. Here we report; for the first time; the implementation of Ge1-xSnx alloy nanowires as anode materials for Li-ion batteries. Ge1-xSnx alloy nanowires have been successfully grown via vapor-liquid-solid (VLS) technique directly on stainless steel current collectors. Ge1-xSnx (x = 0.048) nanowires were predominantly seeded from the Au0.80Ag0.20 catalysts with negligible amount of growth was also directly catalysed from stainless steel substrate. The electrochemical performance of the the Ge1-xSnx nanowires as an anode material for Li-ion batteries was investigated via galvanostatic cycling and detailed analysis of differential capacity plots. The nanowire electrodes demonstrated an exceptional capacity retention of 93.4 % from the 2nd to the 100th charge at a C/5 rate, while maintaining a specific capacity value of ~921 mAh/g after 100 cycles. Voltage profiles and differential capacity plots revealed that the Ge1-xSnx nanowires behave as an alloying mode anode material, as reduction/oxidation peaks for both Ge and Sn were observed, however it is clear that the reversible lithiation of Ge is responsible for the majority of the charge stored. | en |
dc.description.sponsorship | Irish Research Council (Postgraduate Scholarship Grant Number: GOIPG/2015/2772) | en |
dc.description.status | Peer reviewed | en |
dc.description.version | Accepted Version | en |
dc.format.mimetype | application/pdf | en |
dc.identifier.citation | Doherty, J., McNulty, D., Biswas, S., Moore, K., Conroy, M., Bangert, U., O€™Dwyer, C. and Holmes, J. D. (2020) 'Germanium tin alloy nanowires as anode materials for high performance Li-ion batteries', Nanotechnology, 31(16), 165402 (9 pp). doi: 10.1088/1361-6528/ab6678 | en |
dc.identifier.doi | 10.1088/1361-6528/ab6678 | en |
dc.identifier.eissn | 1361-6528 | |
dc.identifier.issn | 0957-4484 | |
dc.identifier.journaltitle | Nanotechnology | en |
dc.identifier.uri | https://hdl.handle.net/10468/9479 | |
dc.language.iso | en | en |
dc.publisher | IOP Publishing | en |
dc.relation.project | info: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.uri | https://iopscience.iop.org/article/10.1088/1361-6528/ab6678 | |
dc.rights | © 2020 IOP Publishing Ltd. This Accepted Manuscript is available for reuse under a CC BY-NC-ND 3.0 licence after a 12 month embargo period. After the embargo period, everyone is permitted to use, copy and redistribute this article for non-commercial purposes only, provided that they adhere to all the terms of the licence https://creativecommons.org/licences/by-nc-nd/3.0 | en |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject | Nanowire | en |
dc.subject | GeSn alloy | en |
dc.subject | Li-ion battery | en |
dc.title | Germanium tin alloy nanowires as anode materials for high performance Li-ion batteries | en |
dc.type | Article (peer-reviewed) | en |
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