Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1277864 | International Journal of Hydrogen Energy | 2009 | 10 Pages |
Abstract
In this paper we present a study on the relation between the evolution, upon successive H2 cycling, of the crystalline order and the H2 sorption properties of Pd-capped textured Mg thin films grown on Si and glass substrates.Using an asymmetric diffraction geometry suitable for thin films, it is found that: i) hydrogen desorption can be achieved at low temperatures exposing the samples to air and ii) already upon one hydrogen absorption–desorption cycle, the original texture is lost. Moreover metal-to-insulator transition following magnesium hydride formation is observed through spectrophotometry. However, cycling results in being detrimental to film properties, mainly due to the Pd cap degradation and correlated processes.
Related Topics
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Authors
G. Siviero, V. Bello, G. Mattei, P. Mazzoldi, G. Battaglin, N. Bazzanella, R. Checchetto, A. Miotello,