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Hydriding Behaviour of Mg-C Nanocomposites

Published online by Cambridge University Press:  26 February 2011

A. Bassetti ,
E. Bonetti ,
A. L. Fiorini ,
J. Grbovic ,
A. Montone ,
L. Pasquini  and
M. Vittori Antisari
A. Bassetti
Affiliation:
Department of Physics, University of Bologna and INFM, Bologna, Italy
E. Bonetti
Affiliation:
Department of Physics, University of Bologna and INFM, Bologna, Italy
A. L. Fiorini
Affiliation:
Department of Physics, University of Bologna and INFM, Bologna, Italy
J. Grbovic
Affiliation:
Materials and Technology Unit, ENEA C.R. Casaccia, Roma, Italy
A. Montone
Affiliation:
Materials and Technology Unit, ENEA C.R. Casaccia, Roma, Italy
L. Pasquini
Affiliation:
Department of Physics, University of Bologna and INFM, Bologna, Italy
M. Vittori Antisari
Affiliation:
Materials and Technology Unit, ENEA C.R. Casaccia, Roma, Italy
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Abstract

Magnesium carbon nanocomposites for hydrogen storage have been synthesized by ball milling with different amount of benzene, acting as a lubricant. Their microstructure has been studied by X-ray diffraction and scanning electron microscopy, while the hydrogen desorption temperature has been tested by differential scanning calorimetry. Experimental results show that the microstructure after milling, the hydrogenation capabilities of the material and the reactivity with the air are related to the amount of additives. In particular the carbon to benzene ratio seems to play a major role. In fact, with an optimum value of carbon to benzene weight ratio of 1/6, the amount of carbon being 15 wt% of the milled mixture, a decomposition heat equal to 57% of pure MgH2 was measured, even after air manipulation of the sample.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 801: Symposium BB – Materials and Technologies for a Hydrogen Economy , 2003 , BB1.6
Copyright
Copyright © Materials Research Society 2004

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References

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