NaV2O5 from sodium ion-exchanged vanadium oxide nanotubes and its efficient reversible lithiation as a Li-ion anode material.

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dc.contributor.author McNulty, David
dc.contributor.author Buckley, D. Noel
dc.contributor.author O'Dwyer, Colm
dc.date.accessioned 2019-01-08T11:41:02Z
dc.date.available 2019-01-08T11:41:02Z
dc.date.issued 2019-01-03
dc.identifier.citation McNulty, D., Noel Buckley, D. and O’Dwyer, C. (2019) 'NaV2O5 from Sodium Ion-Exchanged Vanadium Oxide Nanotubes and Its Efficient Reversible Lithiation as a Li-Ion Anode Material', ACS Applied Energy Materials, 2(1), pp. 822-832. doi: 10.1021/acsaem.8b01895 en
dc.identifier.volume 2
dc.identifier.startpage 822 en
dc.identifier.endpage 832 en
dc.identifier.issn 2574-0962
dc.identifier.uri http://hdl.handle.net/10468/7268
dc.identifier.doi 10.1021/acsaem.8b01895
dc.description.abstract Efficient synthetic protocols for stable oxide materials as Li-ion battery electrodes are important not just for improving long term battery performance, but for tackling potential material abundance issues and understanding the nature of ion-intercalation for beyond lithium technologies. Oxide anodes are denser, typically, than graphite, leading to a doubling or more of the energy density. Using oxides as lower voltage battery anodes, that efficiently and reversibly intercalate cations while avoiding dominating conversion-mode side reactions are much less common. We show that ion-exchanging the molecular templates used to form scrolled, layered vanadium oxide nanotubes (VONTs) with sodium ions allows us to form NaV2O5 crystals that behave as Li- ion battery anodes with efficienct capacity retention over 1000 cycles. We also track and analyse the thermal recrystallization of intralayer Na+ ion-exchange in vanadium oxide nanotubes (Na-VONTs) to NaV2O5 by thermogravimetric analysis, X-ray and electron diffraction, transmission and scanning electron microscopy and infra-red spectroscopy. The quantification and understanding of the electrochemical performance of ion-exchanged nanotubes before and after thermal treatment was determined by cyclic voltammetry and galvanostatic cycling. NaV2O5 in the form of micro- and nanoparticles demonstrate exceptional capacity retention during long cycle life galvanostatic cycling with Li+, retaining 93% of their capacity from the 100th to the 1000th cycle, when cycled using an applied specific current of 200 mA/g in a conductive additive and binder-free formulation. Intercalation reactions dominate over much of the voltage range. Conversion mode processes are negligible and the material reversible lithiates with charge compensation by cation (V) redox. This report offers valuable insight into the use of Group I (Li, Na…) elements to make vanadate bronzes as long cycle life and stable Li-ion battery anode materials with higher volumetric energy density. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Chemical Society, ACS en
dc.relation.uri https://pubs.acs.org/doi/10.1021/acsaem.8b01895
dc.rights © 2019 American Chemical Society en
dc.subject Li-ion battery en
dc.subject Anode en
dc.subject Sodium vanadate en
dc.subject Energy storage en
dc.subject Oxide en
dc.subject Nanotubes en
dc.title NaV2O5 from sodium ion-exchanged vanadium oxide nanotubes and its efficient reversible lithiation as a Li-ion anode material. 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 2019-01-05T18:13:01Z
dc.description.version Accepted Version en
dc.internal.rssid 468258751
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Higher Education Authority en
dc.description.status Peer reviewed en
dc.identifier.journaltitle ACS Applied Energy Materials en
dc.internal.copyrightchecked Yes. https://pubs.acs.org/page/policy/freetoread/index.html en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress c.odwyer@ucc.ie en
dc.relation.project info:eu-repo/grantAgreement/SFI/Charles Parsons Energy Research Awards/06/CP/E007/IE/Charles Parsons Research Initiative & Graduate School/ en
dc.relation.project info: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.project info: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.project info: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


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