Hydrogen sorption improvement of nanocrystalline MgH2 by Nb2O5 nanoparticles

被引：144
|
作者：
Friedrichs, O
Klassen, T
Sánchez-López, JC
Bormann, R
Fernández, A
机构：
[1] Inst Ciencia Mat Sevilla, Seville, Spain
[2] GKSS Forschungszentrum Geesthacht GmbH, Mat Res Inst, D-21502 Geesthacht, Germany
来源：
SCRIPTA MATERIALIA | 2006年 / 54卷 / 07期
关键词：
hydrogen storage; kinetics; nanocrystalline; magnesium hydride; Nb2O5;
D O I：
10.1016/j.scriptamat.2005.12.011
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influence of Nb2O5 nanoparticles (15 nm) as an additive for mechanical milling on the hydrogen sorption kinetics of MgH2 was investigated. By using nanometric Nb2O5, a significant reduction of milling time (200 times shorter) with a decrease of desorption temperature by 60 degrees C were observed in comparison to its micrometric form. X-ray diffraction and hydrogen sorption measurements led to the proposal of two possible mechanisms for the hydrogen sorption based on an intimate contact between MgH2 and Nb2O5. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1293 / 1297
页数：5
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