Reduced surfactant uptake in three dimensional assemblies of VO(x) nanotubes improves reversible Li(+) intercalation and charge capacity

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dc.contributor.author O'Dwyer, Colm
dc.contributor.author Lavayen, Vladimir
dc.contributor.author Tanner, David A.
dc.contributor.author Newcomb, Simon B.
dc.contributor.author Benavente, Eglantina
dc.contributor.author Gonzalez, Guillermo
dc.contributor.author Sotomayor Torres, Clivia M.
dc.date.accessioned 2013-02-19T16:28:58Z
dc.date.available 2013-02-19T16:28:58Z
dc.date.copyright 2009
dc.date.issued 2009
dc.identifier.citation O'DWYER, C., LAVAYEN, V., TANNER, D. A., NEWCOMB, S. B., BENAVENTE, E., GONZÁLEZ, G. & TORRES, C. M. S. (2009). Reduced Surfactant Uptake in Three Dimensional Assemblies of VOx Nanotubes Improves Reversible Li+ Intercalation and Charge Capacity. Advanced Functional Materials, 19 (1), 1736-1745. doi: 10.1002/adfm.200801107 en
dc.identifier.volume 19 en
dc.identifier.issued 1 en
dc.identifier.startpage 1736 en
dc.identifier.endpage 1745 en
dc.identifier.uri http://hdl.handle.net/10468/975
dc.identifier.doi 10.1002/adfm.200801107
dc.description.abstract The relationship between the nanoscale structure of vanadium pentoxide nanotubes and their ability to accommodate Li+ during intercalation/deintercalation is explored. The nanotubes are synthesized using two different precursors through a surfactant-assisted templating method, resulting in standalone VOx (vanadium oxide) nanotubes and also “nano-urchin”. Under highly reducing conditions, where the interlaminar uptake of primary alkylamines is maximized, standalone nanotubes exhibit near-perfect scrolled layers and long-range structural order even at the molecular level. Under less reducing conditions, the degree of amine uptake is reduced due to a lower density of V4+ sites and less V2O5 is functionalized with adsorbed alkylammonium cations. This is typical of the nano-urchin structure. High-resolution TEM studies revealed the unique observation of nanometer-scale nanocrystals of pristine unreacted V2O5 throughout the length of the nanotubes in the nano-urchin. Electrochemical intercalation studies revealed that the very well ordered xerogel-based nanotubes exhibit similar specific capacities (235 mA h g −1) to Na+-exchange nanorolls of VOx (200 mA h g −1). By comparison, the theoretical maximum value is reported to be 240 mA h g −1. The VOTPP-based nanotubes of the nano-urchin 3D assemblies, however, exhibit useful charge capacities exceeding 437 mA h g −1, which is a considerable advance for VOx based nanomaterials and one of the highest known capacities for Li+ intercalated laminar vanadates. en
dc.description.sponsorship Science Foundation Ireland (02/IN.1/I172); European Commission(FP6/2003/IST/2-511616); Universidad de Chile and Fondo Nacional de Desarrollo Científico y Tecnológico, Chile (Grants 1050344, 1030102, 7050081, and 1050788); Conselho Nacional de Desenvolvimento Científico e Tecnológico, Rede Nacional de Pesquisa em Nanotubos de Carbono, Brazil (PBCT Grant ACT027); Fondo Nacional de Desarrollo Científico y Tecnológico, Chile (Grant 1090683) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Wiley en
dc.relation.uri http://onlinelibrary.wiley.com/doi/10.1002/adfm.200801107/pdf
dc.rights © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the pre-peer reviewed version of the following article: O'DWYER, C., LAVAYEN, V., TANNER, D. A., NEWCOMB, S. B., BENAVENTE, E., GONZÁLEZ, G. & TORRES, C. M. S. 2009. Reduced Surfactant Uptake in Three Dimensional Assemblies of VOx Nanotubes Improves Reversible Li+ Intercalation and Charge Capacity. Advanced Functional Materials, 19, 1736-1745., which has been published in final form at http://dx.doi.org/10.1002/adfm.200801107 en
dc.subject Vanadium oxide en
dc.subject Nanotubes en
dc.subject Intercalation en
dc.subject Batteries en
dc.subject Energy storage en
dc.title Reduced surfactant uptake in three dimensional assemblies of VO(x) nanotubes improves reversible Li(+) intercalation and charge capacity en
dc.type Article (peer-reviewed) en
dc.internal.authorurl http://research.ucc.ie/profiles/D004/codwyer 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 2012-11-29T17:44:10Z
dc.description.version Submitted Version en
dc.internal.rssid 162343181
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder European Commission en
dc.contributor.funder Universidad de Chile es
dc.contributor.funder Fondo Nacional de Desarrollo Científico y Tecnológico, Chile es
dc.contributor.funder Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brazil pt
dc.description.status Peer reviewed en
dc.identifier.journaltitle Advanced Functional Materials en
dc.internal.copyrightchecked No. CORA - ROMEO. Submitted version and set statement. en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress c.odwyer@ucc.ie en


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