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
相关论文
共 15 条
[1]   Fast hydrogen sorption kinetics of nanocrystalline Mg using Nb2O5 as catalyst [J].
Barkhordarian, G ;
Klassen, T ;
Bormann, R .
SCRIPTA MATERIALIA, 2003, 49 (03) :213-217
[2]   Effect of Nb2O5 content on hydrogen reaction kinetics of Mg [J].
Barkhordarian, G ;
Klassen, T ;
Bormann, R .
JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 364 (1-2) :242-246
[3]   THE DEVELOPMENT, TESTING AND OPTIMIZATION OF ENERGY-STORAGE MATERIALS BASED ON THE MGH2-MG SYSTEM [J].
BOGDANOVIC, B ;
HARTWIG, TH ;
SPLIETHOFF, B .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1993, 18 (07) :575-589
[4]   Accelerated diffusion of hydrogen along grain boundaries in nickel [J].
Brass, AM ;
Chanfreau, A .
ACTA MATERIALIA, 1996, 44 (09) :3823-3831
[5]   Chemical and microstructural study of the oxygen passivation behaviour of nanocrystalline Mg and MgH2 [J].
Friedrichs, O ;
Sánchez-López, JC ;
López-Cartes, C ;
Dornheim, M ;
Klassen, T ;
Bormann, R ;
Fernández, A .
APPLIED SURFACE SCIENCE, 2006, 252 (06) :2334-2345
[6]   MgH2 with Nb2O5 as additive, for hydrogen storage:: Chemical, structural and kinetic behavior with heating [J].
Friedrichs, O ;
Aguey-Zinsou, F ;
Fernández, JRA ;
Sánchez-López, JC ;
Justo, A ;
Klassen, T ;
Bormann, R ;
Fernández, A .
ACTA MATERIALIA, 2006, 54 (01) :105-110
[7]   Structure of nanocomposite metal hydrides [J].
Huot, J ;
Pelletier, JF ;
Liang, G ;
Sutton, M ;
Schulz, R .
JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 330 :727-731
[8]   Improvement of hydrogen-storage properties of Mg by reactive mechanical grinding with Fe2O3 [J].
Kwon, IH ;
Bobet, JL ;
Bae, JS ;
Song, MY .
JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 396 (1-2) :264-268
[9]   Catalytic effect of transition metals on hydrogen sorption in nanocrystalline ball milled MgH2-Tm (Tm=Ti, V, Mn, Fe and Ni) systems [J].
Liang, G ;
Huot, J ;
Boily, S ;
Van Neste, A ;
Schulz, R .
JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 292 (1-2) :247-252
[10]   Metal oxides as catalysts for improved hydrogen sorption in nanocrystalline Mg-based materials [J].
Oelerich, W ;
Klassen, T ;
Bormann, R .
JOURNAL OF ALLOYS AND COMPOUNDS, 2001, 315 (1-2) :237-242
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