Effect of Nb2O5 on MgH2 properties during mechanical milling

被引：192

作者：

Aguey-Zinsou, K.-F. ^{[1
]}

Fernandez, J. R. Ares ^{[1
]}

Klassen, T. ^{[1
]}

Bormann, R. ^{[1
]}

机构：

[1] GKSS Forschungszentrum Geesthacht GmbH, Mat Res Inst, D-21502 Geesthacht, Germany

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2007年 / 32卷 / 13期

关键词：

mechanical milling; magnesium; nanocrystalline materials; hydrogen storage; particle size;

D O I：

10.1016/j.ijhydene.2006.10.068

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Recently, it was shown that hydrogen absorption-desorption kinetics in magnesium were improved by milling magnesium hydride (MgH2) with transition metal oxides. Herein, we investigate the role of the most effective of these oxides, Nb2O5 when added in larger volume fraction. The effect of Nb2O5 on magnesium crystalline structure, particle size and (ab)desorption properties has been characterised. Moreover, we report that pure MgH2 can also show fast hydrogen sorption kinetics after a long milling time. The effects of Nb2O5 on MgH2 sorption properties are rationalised in a new approach considering Nb2O5 as a dispersing agent, which helps reduce MgH2 particle size during milling. (C) 2006 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：2400 / 2407

页数：8

共 60 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] POLYMORPHISM OF MAGNESIUM HYDRIDE UNDER HIGH-PRESSURE [J].

BASTIDE, JP ;

BONNETOT, B ;

LETOFFE, JM ;

CLAUDY, P .

MATERIALS RESEARCH BULLETIN, 1980, 15 (09) :1215-1224

[4] COMPARATIVE-STUDY OF THE FORMATION-DECOMPOSITION MECHANISMS AND KINETICS IN LANI5 AND MAGNESIUM REVERSIBLE HYDRIDES [J].

BELKBIR, L ;

JOLY, E ;

GERARD, N .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1981, 6 (03) :285-294

[5] Study of Mg-M (M = Co, Ni and Fe) mixture elaborated by reactive mechanical alloying - hydrogen sorption properties [J].

Bobet, JL ;

Akiba, E ;

Nakamura, Y ;

Darriet, B .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2000, 25 (10) :987-996

[6] Addition of nanosized Cr2O3 to magnesium for improvement of the hydrogen sorption properties [J].

Bobet, JL ;

Desmoulins-Krawiec, S ;

Grigorova, E ;

Cansell, F ;

Chevalier, B .

JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 351 (1-2) :217-221

[7] ACTIVE MGH2-MG-SYSTEMS FOR HYDROGEN STORAGE [J].

BOGDANOVIC, B ;

SPLIETHOFF, B .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1987, 12 (12) :863-873

[8] 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

[9] Thermodynamic investigation of the magnesium-hydrogen system [J].

Bogdanovic, B ;

Bohmhammel, K ;

Christ, B ;

Reiser, A ;

Schlichte, K ;

Vehlen, R ;

Wolf, U .

JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 282 (1-2) :84-92

[10]

BOULET JM, 1991, LESS COMMON METALS, V89, P151

← 1 2 3 4 5 6 →