Reduced surfactant uptake in three dimensional assemblies of VO(x) nanotubes improves reversible Li(+) intercalation and charge capacity
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.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.date.accessioned | 2013-02-19T16:28:58Z | |
dc.date.available | 2013-02-19T16:28:58Z | |
dc.date.copyright | 2009 | |
dc.date.issued | 2009 | |
dc.date.updated | 2012-11-29T17:44:10Z | |
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.description.status | Peer reviewed | en |
dc.description.version | Submitted Version | en |
dc.format.mimetype | application/pdf | en |
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.doi | 10.1002/adfm.200801107 | |
dc.identifier.endpage | 1745 | en |
dc.identifier.issued | 1 | en |
dc.identifier.journaltitle | Advanced Functional Materials | en |
dc.identifier.startpage | 1736 | en |
dc.identifier.uri | https://hdl.handle.net/10468/975 | |
dc.identifier.volume | 19 | 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 |