Enhancement of Interfacial Hydrogen Interactions with Nanoporous Gold-Containing Metallic Glass

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dc.authoridIvanov, Yurii/0000-0003-0271-5504
dc.authoridSarac, Baran/0000-0002-0130-3914
dc.authoridMicusik, Matej/0000-0003-2751-5381
dc.authoridOmastova, Maria/0000-0003-0210-5861
dc.authoridDancette, Sylvain/0000-0002-6884-8732
dc.authoridSarac, A.Sezai/0000-0001-7513-1740
dc.contributor.authorSarac, Baran
dc.contributor.authorIvanov, Yurii P.
dc.contributor.authorMicusik, Matej
dc.contributor.authorKarazehir, Tolga
dc.contributor.authorPutz, Barbara
dc.contributor.authorDancette, Sylvain
dc.contributor.authorOmastova, Maria
dc.date.accessioned2025-01-06T17:44:35Z
dc.date.available2025-01-06T17:44:35Z
dc.date.issued2021
dc.description.abstractContrary to the electrochemical energy storage in Pd nanofilms challenged by diffusion limitations, extensive metalhydrogen interactions in Pd-based metallic glasses result from their grain-free structure and presence of free volume. This contribution investigates the kinetics of hydrogen-metal interactions in goldcontaining Pd-based metallic glass (MG) and crystalline Pd nanofilms for two different pore architectures and nonporous substrates. Fully amorphous MGs obtained by physical vapor deposition (PVD) co-sputtering are electrochemically hydrogenated by chronoamperometry. High-resolution (scanning) transmission electron microscopy and corresponding energydispersive X-ray analysis after hydrogenation corroborate the existence of several nanometer-sized crystals homogeneously dispersed throughout the matrix. These nanocrystals are induced by PdHx formation, which was confirmed by depth-resolved X-ray photoelectron spectroscopy, indicating an oxide-free inner layer of the nanofilm. With a larger pore diameter and spacing in the substrate (Pore40), the MG attains a frequency-independent impedance at low frequencies (similar to 500 Hz) with very high Bode magnitude stability accounting for enhanced ionic diffusion. On the contrary, on a substrate with a smaller pore diameter and spacing (Pore25), the MG shows a larger low-frequency (0.1 Hz) capacitance, linked to enhanced ionic transfer in the near-DC region. Hence, the nanoporosity of amorphous and crystalline metallic materials can be systematically adjusted depending on AC- and DC-type applications.
dc.description.sponsorshipEuropean Research Council [ERC-2013-ADG-340025, ERC-2015-ADG695487]; Ministry of Science and Higher Education of the Russian Federation [0657-2020-0005, K3-2015-036]
dc.description.sponsorshipThe authors thank C. Mitterer and V. Terziyska for providing access to the sputtering device for synthesizing the MG and Pd nanofilms. This work was supported by the European Research Council under the Advanced Grant INTELHYB.Next generation of complex metallic materials in intelligent hybrid structures (Grant ERC-2013-ADG-340025), ExtendGlass. Extending the range of the glassy state: Exploring structure and property limits in metallic glasses (Grant ERC-2015-ADG695487), state task of the Ministry of Science and Higher Education of the Russian Federation No. 0657-2020-0005, and the support from the Ministry of Science and Higher Education of the Russian Federation in the framework of the Increase Competitiveness Program of NUST << MISiS >> (Grant No. K3-2015-036).
dc.identifier.doi10.1021/acsami.1c08560
dc.identifier.endpage42623
dc.identifier.issn1944-8244
dc.identifier.issn1944-8252
dc.identifier.issue36
dc.identifier.pmid34491728
dc.identifier.scopus2-s2.0-85115636382
dc.identifier.scopusqualityQ1
dc.identifier.startpage42613
dc.identifier.urihttps://doi.org/10.1021/acsami.1c08560
dc.identifier.urihttps://hdl.handle.net/20.500.14669/3108
dc.identifier.volume13
dc.identifier.wosWOS:000697282300026
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherAmer Chemical Soc
dc.relation.ispartofAcs Applied Materials & Interfaces
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectthin films
dc.subjectmetallic glass
dc.subjectpalladium
dc.subjectgold
dc.subjectelectrochemical hydrogen
dc.subjecttransmission electron microscopy
dc.subjectX-ray photoelectron spectroscopy
dc.subjectequivalent circuit model
dc.titleEnhancement of Interfacial Hydrogen Interactions with Nanoporous Gold-Containing Metallic Glass
dc.typeArticle

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