English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/7815
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:


Influence of particle size on electrochemical and gas-phase hydrogen storage in nanocrystalline Mg

AuthorsFriedrichs, O.; Kolodziejczyk, L.; Sánchez López, Juan Carlos; Fernández-Camacho, A. ; Lyubenova, L.; Zander, Daniela; Kösterc, U.; Aguey-Zinsou, K. F.; Klassend, T.; Bormann, R.
KeywordsHydrogen storage
Metal hydrides
Nanocrystalline magnesium hydride
Issue Date8-Sep-2008
CitationJournal of Alloys and Compounds, 463 (1-2), pp. 539-545 (2008)
AbstractNanocrystalline Mg powders of different particle size were obtained by inert gas evaporation and studied during electrochemical and gas-phase hydrogen cycling processes. The samples were compared to dehydrided samples obtained by mechanical milling of MgH2 with and without 2 mol% Nb2O5 as catalyst. The hydrogen overpotential of the pure Mg, which is a measure of the hydrogen evolution at the electrode surface, was observed to be reduced with smaller particle sizes reaching values comparable to samples with Nb2O5 additive. On the other hand gas-phase charging experiments showed the capacity loss with smaller particle sizes due to oxidation effects. These oxidation effects are different depending on the synthesis method used and showed a major influence on the hydrogen sorption kinetics.
Description7 pp. Published in Journal of Alloys and Compounds Copyright © 2007 Elsevier B.V.
Publisher version (URL)http://dx.doi.org/10.1016/j.jallcom.2007.09.085
Appears in Collections:(ICMS) 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.