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

dc.contributor.authorO'Dwyer, Colm
dc.contributor.authorLavayen, Vladimir
dc.contributor.authorTanner, David A.
dc.contributor.authorNewcomb, Simon B.
dc.contributor.authorBenavente, Eglantina
dc.contributor.authorGonzalez, Guillermo
dc.contributor.authorSotomayor Torres, Clivia M.
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderEuropean Commissionen
dc.contributor.funderUniversidad de Chilees
dc.contributor.funderFondo Nacional de Desarrollo Científico y Tecnológico, Chilees
dc.contributor.funderConselho Nacional de Desenvolvimento Científico e Tecnológico, Brazilpt
dc.date.accessioned2013-02-19T16:28:58Z
dc.date.available2013-02-19T16:28:58Z
dc.date.copyright2009
dc.date.issued2009
dc.date.updated2012-11-29T17:44:10Z
dc.description.abstractThe 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.sponsorshipScience 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.description.statusPeer revieweden
dc.description.versionSubmitted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationO'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.200801107en
dc.identifier.doi10.1002/adfm.200801107
dc.identifier.endpage1745en
dc.identifier.issued1en
dc.identifier.journaltitleAdvanced Functional Materialsen
dc.identifier.startpage1736en
dc.identifier.urihttps://hdl.handle.net/10468/975
dc.identifier.volume19en
dc.language.isoenen
dc.publisherWileyen
dc.relation.urihttp://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.200801107en
dc.subjectVanadium oxideen
dc.subjectNanotubesen
dc.subjectIntercalationen
dc.subjectBatteriesen
dc.subjectEnergy storageen
dc.titleReduced surfactant uptake in three dimensional assemblies of VO(x) nanotubes improves reversible Li(+) intercalation and charge capacityen
dc.typeArticle (peer-reviewed)en
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