Metallic Glass Films with Nanostructured Periodic Density Fluctuations Supported on Si/SiO2 as an Efficient Hydrogen Sorber

Baran Sarac, Yurii P. Ivanov, Tolga Karazehir, Barbara Putz, A. Lindsay Greer, A. Sezai Sarac, Jürgen Eckert

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6 Citations (Scopus)


Nanostructured metallic glass films (NMGF) can exhibit surface and intrinsic effects that give rise to unique physical and chemical properties. Here, a facile synthesis and electrochemical, structural, and morphologic characterization of Pd-Au-Si based MGs of approximately 50 nm thickness supported on Si/SiO2 is reported. Impressively, the maximum total hydrogen charge stored in the Pd-Au-Si nanofilm is equal to that in polycrystalline Pd films with 1 μm thickness in 0.1 m H2SO4 electrolyte. The same NMGF has a volumetric desorption charge that is more than eight times and 25 % higher than that of polycrystalline PdNF and Pd-Cu-Si NMGF with the same thickness supported on Si/SiO2, respectively. A significant number of nanovoids originating from PdHx crystals, and an increase in the average interatomic spacing is detected in Pd-Au-Si NMGF by high-resolution TEM. Such a high amount of hydrogen sorption is linked to the unique density fluctuations without any chemical segregation exclusively observed for this NMGF.
Original languageEnglish
Pages (from-to)8244-8253
Number of pages10
JournalChemistry - A European Journal
Issue number37
Publication statusPublished - 24 Apr 2020


  • electrosorption
  • hydrogenation
  • metallic glass
  • nanostructures
  • thin films

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