Evaluations of Hydrogen Properties on MgHx-Nb2O5 Composite by Mechanical Alloying

Kyeong Il Kim; Tae Whan Hong

doi:10.4028/www.scientific.net/MSF.620-622.9

Paper Titles

Preface

Utilization of Gneiss in Asphalt Concrete Mixtures
p.1

Preparation of Sb:F:SnO₂ Films and their Application in Low-E Glass
p.5

Evaluations of Hydrogen Properties on MgH_x-Nb₂O₅ Composite by Mechanical Alloying
p.9

Fabrications and Evaluations of Hydrogen Permeation on TiN-5wt%Ni Membrane by Spark Plasma Sintering
p.13

Synthesis, Characterization and Electrochemical Performance of Li₂Mn_0.7Fe_0.3SiO₄ Prepared from Solid-state Reaction
p.17

Ironmaking Process Parameter Analysis and Optimization for the Blast Furnace
p.21

Evaluations of Hydrogen Permeation on γ-Al₂O₃ Synthesized by Sol-Gel Process
p.25

Porous TiO₂ Layer Encapsulated Silicon as the Anode Material for Lithium Secondary Batteries
p.29

HomeMaterials Science ForumMaterials Science Forum Vols. 620-622Evaluations of Hydrogen Properties on MgHx-Nb2O5...

Evaluations of Hydrogen Properties on MgH_x-Nb₂O₅ Composite by Mechanical Alloying

Abstract:

The most attractive way to storage hydrogen safely and economically is in metal hydrides. In particular, magnesium has attracted much interest since their hydrogen capacity exceeds that of known metal hydrides. One of the approaches to improve the kinetic is addition of metal oxide. In this paper, we tried to improve the hydrogen absorption properties of Mg. The effect of transition oxides, such as Nb2O5 on the kinetics of the Mg hydrogen absorption reaction was investigated. MgHx-Nb2O5 composites have been synthesized by hydrogen induced mechanical alloying. The powder synthesized was characterized by XRD, SEM, EDX, BET and simultaneous TG/DSC analysis. The hydrogenation behaviors were evaluated by using an automatic Sievert’s type PCT apparatus. Absorption/desorption kinetics and PCI of MgHx catalyzed with 5wt.%Nb2O5(as-received), 5wt.%Nb2O5(30min. milled) are determined at 423, 473, 523, 573, 623K.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 620-622)

Pages:

9-12

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.620-622.9

Citation:

Cite this paper

Online since:

April 2009

Authors:

Kyeong Il Kim, Tae Whan Hong

Keywords:

Hydrogen Storage, Hydrogenation, Pressure-Compositon-Temperature (PCT), Transition Metal Oxide

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] G. Barkhordarian, T. Klassen, R. Bormann, Scripta Mater. Vol. 49, 2003, pp.213-217.

Google Scholar

[2] J.F. Pelletier, J. Huot, M. Sutton, R. Schulz, A.R. Sandy, L.B. Lurio, S.G.J. Mochrie, Phys. Rev. B, Vol. 63, 2001, p.052103.

Google Scholar

[3] C.X. Shang, M. Bououdina, Y. Song, Z.X. Guo, Int. J. Hydrogen Energy, Vol. 29, 2004, pp.73-80.

Google Scholar

[4] W. Oelerich, T. Klassen, R. Bormann, J. Alloys Compd., Vol. 315, 2001, pp.237-242.

Google Scholar

[5] W. Oelerich, T. Klassen, R. Bormann, J. Alloys Compd., Vol. 322, 2001, pp. L5-9.

Google Scholar

[6] G. Laing, J. Huot, S. Boily, A. Van Neste, R. Schulz, J. Alloys Compd., Vol. 291, 1999, pp.295-299.

Google Scholar

[7] Gagik Barkhordarian, Thomas Klassen, Rudiger Bomann, Scripta Materialia, Vol. 49, 2003, pp.213-217.

Google Scholar

[8] G. Laing, J. Huot, S. Boily, A. Van Neste, R. Schulz, J. Alloys Compd., Vol. 292, 1999, pp.247-252.

Google Scholar

[9] V.V. Bhat, A. Rougier, L. Aymard, G.A. Nari, J. -M. Tarascon, J. Alloys Compd., Vol. 460, 2008, pp.507-512.

Google Scholar