High capacity binder-free nanocrystalline GeO2 inverse opal anodes for Li-ion batteries with long cycle life and stable cell voltage

Simple item page
dc.contributor.authorMcNulty, David
dc.contributor.authorGeaney, Hugh
dc.contributor.authorBuckley, Darragh
dc.contributor.authorO'Dwyer, Colm
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderRoyal Irish Academyen
dc.contributor.funderIrish Research Councilen
dc.date.accessioned2018-02-19T14:27:58Z
dc.date.available2018-02-19T14:27:58Z
dc.date.issued2018-11-07
dc.date.updated2018-02-19T08:38:04Z
dc.description.abstractWe demonstrate that crystalline macroporous GeO2 inverse opals exhibit state-of-the-art capacity retention, voltage stability and a very long cycle life when tested as anode materials for Li-ion batteries. The specific capacities and capacity retention obtained from GeO2 IOs are greater than values reported for other GeO2 nanostructures and comparable to pure Ge nanostructures. Unlike pure Ge nanostructures, GeO2 IOs can be prepared in air without complex processing procedures, potentially making them far more attractive from an industrial point of view, in terms of cost and ease of production. Inverse opals are structurally and electrically interconnected, and remove the need for additives and binders. GeO2 IOs show gradual capacity fading over 250 and 1000 cycles, when cycled at specific currents of 150 and 300 mA/g, respectively, while maintaining high capacities and a stable overall cell voltage. The specific capacities after the 500th and 1000th cycles at a specific current of 300 mA/g were ~ 632 and 521 mA h/g respectively, corresponding to a capacity retention in each case of ~ 76% and 63% from the 2nd cycle. Systematic analysis of differential capacity plots obtained from galvanostatic voltage profiles over 1000 cycles offers a detailed insight into the mechanism of charge storage in GeO2 anodes over their long cycle life. Rate capability testing and asymmetric galvanostatic testing demonstrate the ability of GeO2 IO samples to deliver significantly high capacities even at high specific currents (1 A/g).en
dc.description.sponsorshipRoyal Irish Academy (Charlemont Grant); Irish Research Council (Government of Ireland Postgraduate Award under contract GOIPG/2014/206)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMcNulty, D., Geaney, H., Buckley, D. and O'Dwyer, C. (2018) 'High capacity binder-free nanocrystalline GeO2 inverse opal anodes for Li-ion batteries with long cycle life and stable cell voltage', Nano Energy, 43, pp. 11-21. doi: 10.1016/j.nanoen.2017.11.007en
dc.identifier.doi10.1016/j.nanoen.2017.11.007
dc.identifier.endpage21en
dc.identifier.issn2211-2855
dc.identifier.journaltitleNano Energyen
dc.identifier.startpage11en
dc.identifier.urihttps://hdl.handle.net/10468/5478
dc.identifier.volume43en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Technology and Innovation Development Award (TIDA)/13/TIDA/E2761/IE/LiONSKIN - Moldable Li-ion battery outer skin for electronic devices/en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Technology and Innovation Development Award (TIDA)/15/TIDA/2893/IE/Advanced Battery Materials for High Volumetric Energy Density Li-ion Batteries for Remote Off-Grid Power/en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/14/IA/2581/IE/Diffractive optics and photonic probes for efficient mouldable 3D printed battery skin materials for portable electronic devices/en
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S2211285517306870
dc.rights© 2017 Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectGeO2en
dc.subjectInverse opalen
dc.subjectLi-ionen
dc.subjectSemiconductoren
dc.subjectNanomaterialsen
dc.titleHigh capacity binder-free nanocrystalline GeO2 inverse opal anodes for Li-ion batteries with long cycle life and stable cell voltageen
dc.typeArticle (peer-reviewed)en
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
1-s2.0-S2211285517306870-main.pdf
Size:
2.04 MB
Format:
Adobe Portable Document Format
Description:
Accepted version
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
2.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Chemistry - Journal Articles
Tyndall National Institute - Journal Articles