A high-resolution core-level study of Ni-catalyzed absorption and desorption of hydrogen in Mg-films
2007 (English)In: Surface Science, ISSN 0039-6028, E-ISSN 1879-2758, Vol. 601, no 6, 1507-1512 p.Article in journal (Refereed) Published
Ultra-thin magnesium and magnesium-nickel films grown on Mo(110) under ultra-high vacuum (UHV) conditions are hydrogenated at room temperature with atomic H and studied by high-resolution core-level photoelectron spectroscopy (PES). For the Mg-film a layer of hydride is formed at the Mg/Mo interface and a sub-mono layer of hydride is formed at the surface, while an intermediate region remained non-hydrogenated. For the Mg-Ni-film a thick layer of surface hydride was detected, showing that Ni enhances formation of Mg-hydride at the surface. During the heat-up of the hydrogenated Mg-Ni-film hydrogen desorption started at 400 K.
Place, publisher, year, edition, pages
2007. Vol. 601, no 6, 1507-1512 p.
hydrogen storage, magnesium, nickel, hydride, photoelectron spectroscopy
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-37208DOI: 10.1016/j.susc.2007.01.016ISI: 000245616400011ScopusID: 2-s2.0-33847719496OAI: oai:DiVA.org:kth-37208DiVA: diva2:432578