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Effects of ball-milling conditions and additives on the hydrogen sorption properties of Mg + 5 wt% Cr2O3 mixtures

Published online by Cambridge University Press:  01 July 2006

J-L. Bobet ,
M. Kandavel  and
S. Ramaprabhu
J-L. Bobet*
Affiliation:
ICMCB, CNRS [UPR 9048], Université Bordeaux 1, 33608 Pessac cedex, France
M. Kandavel
Affiliation:
Alternate Energy Technology and Magnetic Materials Laboratory, Department of Physics, Indian Institute of Technology, Madras, Chennai-600 036, India
S. Ramaprabhu
Affiliation:
Alternate Energy Technology and Magnetic Materials Laboratory, Department of Physics, Indian Institute of Technology, Madras, Chennai-600 036, India
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Effects of particle size of Cr2O3 catalyst on the hydrogen absorption/desorption kinetics of Mg + 5 wt% Cr2O3 mixtures have been studied. To explain the effect of particle size of Cr2O3 and also to yield information about the role of Cr2O3 during the sorption process, the kinetics data have been analyzed using Avrami–Erofeev rate equations. The activation energies and diffusion coefficients of these mixtures are in the ranges of 50.6–63.2 kJ/mol and 1.2.10−11 to 8.9.10−10 cm2/s, respectively. The addition of nano-oxides led to an increase of the diffusion coefficient of hydrogen by one order of magnitude.

Keywords

Energy storageMechanical alloyingMg
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 7 , July 2006 , pp. 1747 - 1752
Copyright
Copyright © Materials Research Society 2006

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References

REFERENCES

1.Konstanchuk, I.G., Ivanov, E.Y., Pezat, M., Darriet, B., Boldyrev, V.V., Hagenmuller, P.: Hydriding properties of mechanical alloys Mg–Ni. J. Less-Comm. Met. 131, 181 (1987).CrossRefGoogle Scholar
2.Alefed, G., Volkl, J.: Hydrogen in Metals (Springer, Berlin, Germany, 1978), pp. 1–375.Google Scholar
3.Bobet, J-L., Chevalier, B., Song, M.Y., Darriet, B., Etourneau, J.: Hydrogen sorption of Mg-based mixtures elaborated by reactive mechanical grinding. J. Alloys Compd. 336, 292 (2002).CrossRefGoogle Scholar
4.Oelerich, W., Klassen, T., Bormann, R.: Comparison of the catalytic effects of V, V2O5, VN, and VC on the hydrogen sorption of nanocrystalline Mg. J. Alloys Compd. 322, L5 (2001).CrossRefGoogle Scholar
5.Bobet, J-L., Desmoulins-Krawiec, S., Grigorova, E., Cansell, F., Chevalier, B.: Addition of nanosized Cr2O3 to magnesium for improvement of the hydrogen sorption properties. J. Alloys Compd. 351(1–2), 217 (2003).CrossRefGoogle Scholar
6.Bobet, J-L., Silvain, J-F., and Heintz, J-M.: Elaboration of nano oxides by ball milling to be used as additives for magnesium based mixtures for hydrogen storage application. (MRS 2005 Spring Meeting, San Francisco, CA).Google Scholar
7.Schulz, R., Boily, S., and Huot, J.: Nanocrystalline composite for hydrogen storage. Canadian Patent 2207149 (1999).Google Scholar
8.Bobet, J-L., Castro, F.J., Chevalier, B.: Effects of recative mechanical milling conditions on the physico-chemical properties of Mg + Cr2O3 mixtures. J. Alloys Compd. 376, 205 (2004).CrossRefGoogle Scholar
9.Koh, J.T., Goudy, A.J., Huang, P., Zhou, G.: A comparison of the hydriding and dehydriding kinetics of LaNI5 hydride. J. Less-Comm. Met. 153, 89 (1989).CrossRefGoogle Scholar
10.Clay, K.R., Goudy, A.J., Schweibenz, R.G., Zarynow, A.: The effect of the partial replacement of lanthanum in LaNi–H with cerium, preaseodymium, and neodymium on absorption and desorption kinetics. J. Less-Comm. Met. 166, 153 (1990).CrossRefGoogle Scholar
11.Wang, X.L., Suda, S.: Reaction kinetics of the Mm Ni4.5Al0.5–H system. J. Alloys Compd. 184, 109 (1992).CrossRefGoogle Scholar
12.Cahn, R.W., Haasen, P., Kramer, E.J. Electronic and magnetic properties of metals and ceramics—Part 2, in Materials Science and Technology Vol. 36 (VCH Publishers, New York, 1994) pp. 1–421.Google Scholar
13.Ramesh, R., Rao, K.V.S. Rama: Hydrogen absorption characteristics of the Zr1−XHXCO2 system in the pressure range 0–40 bar. J. Alloys Compd. 191, 101 (1993).CrossRefGoogle Scholar
14.Crank, J.: Mathematics of Diffusion (Oxford University Press, Fair Lawn, NJ, 1956), pp. 1–75.Google Scholar
15.Jost, W.: Diffusion in Solids, Liquids and Gases (Academic, New York, 1952), p. 1–87.Google Scholar
16.Schimmel, H.G., Huot, J., Chapon, L.C., Tichelaar, F.D., Mulder, F.M.: Hydrogen cycling of niobium and vanadium catalyzed nanostructured magnesium. J. Am. Chem. Soc. 127, 14348 (2005).CrossRefGoogle ScholarPubMed
17.Bobet, J-L., Chevalier, B., Song, M.Y., Darriet, B., Etourneau, J.: Reactive mechanical grinding of magnesium in hydrogen and the effects of additives. Mater. Manuf. Processes 17, 351 (2002).CrossRefGoogle Scholar