Paper

Effect of Synthesis Parameters on the Hydrogen Desorption of MgH2/C composite Prepared Using Organo-magnesium


Authors:
Muxina Konarova; Jorge Norberto Beltramini; Gao Qing Lu; Akshat Tanksale
Abstract
The MgH2/C composite can be synthesized through decomposition of an organo-magnesium precursor under hydrogen pressure. Samples were synthesized at 250°C for 30 min, 2h and 4 h under 2MPa hydrogen pressure, respectively. XRD patterns of the MgH2/C composite exhibit pure MgH2 phase with tetragonal structure. Morphology of the MgH2/C composite exhibits porous nanostructure and shape of resultant particles varies with the synthesis time. TPD spectra of a sample synthesized at 250°C for 4h shows remarkable decrease in onset hydrogen release temperature. MgH2/C composite prepared by using organo-magnesium precursor decomposes (Tmax=325°C) at relatively lower temperature than the MgH2/C prepared by ball-milling (Tmax=380°C).
Keywords
composite material, hydrogen storage, organo-magnesium, TPD measurement
StartPage
27
EndPage
32
Doi
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