Destabilization of the Mg-H system through elastic constraints
Baldi Coll, Antoni. (University Amsterdam. Department of Physics and Astronomy)
González Silveira, Marta (University Amsterdam. Department of Physics and Astronomy)
Palmisano, V. (University Amsterdam. Department of Physics and Astronomy)
Dam, B. (Technical University Delft. DelftChemTech)
Griessen, R. (University Amsterdam. Department of Physics and Astronomy)
American Physical Society

Data:	2009
Resum:	We tune the thermodynamics of hydrogen absorption in Mg by means of elastic clamping. The loading isotherms measured by hydrogenography show that Mg films covered with Mg-alloy-forming elements, such as Pd and Ni, have hydrogen plateau pressures more than 2 orders of magnitude higher than bulk Mg at the same temperature. An elastic model allows us to interpret the Mg thickness dependence of the hydrogen plateau pressure. Our results suggest an alternative route for the development of new hydrogen storage materials with optimized thermodynamic properties.
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; Versió publicada
Publicat a:	Physical review letters, Vol. 102, Issue 22 (June 2009) , p. 226102, ISSN 1079-7114

DOI: 10.1103/PhysRevLett.102.226102

4 p, 564.5 KB

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