English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/11295
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Effect of carbon support on the kinetic behaviour of a metal hydride electrode

AuthorsThomas, J. E.; Andreasen, G.; Arenillas de la Puente, Ana ; Zubizarreta, Leire ; Barath, P.; Sedlaříková, M.; Vondrak, J.; Visintin, A.
Hydride alloys
Carbon nanotubes
Issue Date28-Feb-2009
CitationElectrochimica Acta 54(7): 2010-2017 (2009)
AbstractThe possibility to improve the electrochemical behaviour of AB5-alloy commercial electrodes was studied using different carbons as support, such as carbon blacks and a selection of commercial and in-lab synthesised carbon nanotubes. The carbons selected for this work present different morphologies (i.e., spherical and tubular). Furthermore, they also present a variation of the porous structure and subsequent surface area, which are also going to influence their further electrochemical behaviour. Carbon samples were texturally characterised by the adsorption–desorption of N2 and CO2 at 77 and 273 K, respectively. The carbon structure was analysed by XRD, Raman, TEM, and the chemistry of the samples was also characterised by elemental analysis. The charge and discharge techniques, cyclic voltammetry, rate capability and linear polarisation were used for the electrochemical characterisation of the electrodes studied. The electrochemical behaviour of all the samples was related to their morphological, textural and chemical properties. The results show that there is a clear influence of the nature of the carbon support on the hydriding/dehydriding reaction of the alloy, and in the case of active carbons the kinetics decreases with the increase of the surface area of the carbon support.
Description8 pages, 13 figures.-- Available online Sep 9, 2008.-- Issue title: Electrochemistry for a healthy planet: environmental, analytical and engineering aspects: Selection of papers from the 6th ISE Spring Meeting, Foz do Iguaçu, Brazil, Mar 16-19, 2008.
Publisher version (URL)http://dx.doi.org/10.1016/j.electacta.2008.08.061
Appears in Collections:(INCAR) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.