Hydrogen, being a regenerative and environmentally harmless fuel, can play a crucial role in the energetic scenario of the near future. In recent years several systems for solid-state hydrogen storage have been investigated, among which a few metals and metal alloys show the most promising properties. Mg and Mg-based micro and nanocomposites are widely studied for this application owing to the high gravimetric storage capacity, even if a proper microstructure, mainly at the material surface, has to be setup in order to overtake kinetic constraints often related to the high surface reactivity. In this paper, we present our approach to this problem and report the main findings. We have examined the influence on hydrogenation/dehydrogenation characteristics of different modifications of the bulk and surface microstructure of MgH 2 powders processed by ball milling, which appears to be one the most useful methods for preparing powders suitable for hydrogen storage.
Reaction with hydrogen of micro and nano composites based on Mg / A. Montone; M. Vittori Antisari; N. Abazovic; J. Grbovic Novakovic; L. Pasquini; E. Bonetti; A.L. Fiorini. - STAMPA. - 555:(2007), pp. 335-342. (Intervento presentato al convegno 8th Conference of the Yugoslav Materials Research Society tenutosi a Herceg Novi, Montenegro nel September 4-8, 2006).
Reaction with hydrogen of micro and nano composites based on Mg
PASQUINI, LUCA;BONETTI, ENNIO;
2007
Abstract
Hydrogen, being a regenerative and environmentally harmless fuel, can play a crucial role in the energetic scenario of the near future. In recent years several systems for solid-state hydrogen storage have been investigated, among which a few metals and metal alloys show the most promising properties. Mg and Mg-based micro and nanocomposites are widely studied for this application owing to the high gravimetric storage capacity, even if a proper microstructure, mainly at the material surface, has to be setup in order to overtake kinetic constraints often related to the high surface reactivity. In this paper, we present our approach to this problem and report the main findings. We have examined the influence on hydrogenation/dehydrogenation characteristics of different modifications of the bulk and surface microstructure of MgH 2 powders processed by ball milling, which appears to be one the most useful methods for preparing powders suitable for hydrogen storage.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
