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

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

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Enhancement of Interfacial Hydrogen Interactions with Nanoporous Gold-Containing Metallic Glass. / Sarac, Baran; Ivanov, Yurii P.; Micusik, Matej et al.
in: ACS Applied Materials and Interfaces, Jahrgang 13.2021, Nr. 36, 15.09.2021, S. 42613-42623.

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Harvard

Sarac, B, Ivanov, YP, Micusik, M, Karazehir, T, Putz, B, Dancette, S, Omastova, M, Greer, AL, Sarac, AS & Eckert, J 2021, 'Enhancement of Interfacial Hydrogen Interactions with Nanoporous Gold-Containing Metallic Glass', ACS Applied Materials and Interfaces, Jg. 13.2021, Nr. 36, S. 42613-42623. https://doi.org/10.1021/acsami.1c08560

APA

Sarac, B., Ivanov, Y. P., Micusik, M., Karazehir, T., Putz, B., Dancette, S., Omastova, M., Greer, A. L., Sarac, A. S., & Eckert, J. (2021). Enhancement of Interfacial Hydrogen Interactions with Nanoporous Gold-Containing Metallic Glass. ACS Applied Materials and Interfaces, 13.2021(36), 42613-42623. https://doi.org/10.1021/acsami.1c08560

Vancouver

Sarac B, Ivanov YP, Micusik M, Karazehir T, Putz B, Dancette S et al. Enhancement of Interfacial Hydrogen Interactions with Nanoporous Gold-Containing Metallic Glass. ACS Applied Materials and Interfaces. 2021 Sep 15;13.2021(36):42613-42623. doi: 10.1021/acsami.1c08560

Author

Sarac, Baran ; Ivanov, Yurii P. ; Micusik, Matej et al. / Enhancement of Interfacial Hydrogen Interactions with Nanoporous Gold-Containing Metallic Glass. in: ACS Applied Materials and Interfaces. 2021 ; Jahrgang 13.2021, Nr. 36. S. 42613-42623.

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@article{01799d25cafd4e6d989d81ce5bba4d14,
title = "Enhancement of Interfacial Hydrogen Interactions with Nanoporous Gold-Containing Metallic Glass",
abstract = "Contrary to the electrochemical energy storage in Pd nanofilms challenged by diffusion limitations, extensive metal–hydrogen 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 gold-containing 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 energy-dispersive 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 (∼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.",
keywords = "electrochemical hydrogen, equivalent circuit model, gold, metallic glass, palladium, thin films, transmission electron microscopy, X-ray photoelectron spectroscopy",
author = "Baran Sarac and Ivanov, {Yurii P.} and Matej Micusik and Tolga Karazehir and Barbara Putz and Sylvain Dancette and Maria Omastova and Greer, {A. Lindsay} and Sarac, {A. Sezai} and J{\"u}rgen Eckert",
note = "Publisher Copyright: {\textcopyright} 2021 American Chemical Society",
year = "2021",
month = sep,
day = "15",
doi = "10.1021/acsami.1c08560",
language = "English",
volume = "13.2021",
pages = "42613--42623",
journal = "ACS Applied Materials and Interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "36",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Enhancement of Interfacial Hydrogen Interactions with Nanoporous Gold-Containing Metallic Glass

AU - Sarac, Baran

AU - Ivanov, Yurii P.

AU - Micusik, Matej

AU - Karazehir, Tolga

AU - Putz, Barbara

AU - Dancette, Sylvain

AU - Omastova, Maria

AU - Greer, A. Lindsay

AU - Sarac, A. Sezai

AU - Eckert, Jürgen

N1 - Publisher Copyright: © 2021 American Chemical Society

PY - 2021/9/15

Y1 - 2021/9/15

N2 - Contrary to the electrochemical energy storage in Pd nanofilms challenged by diffusion limitations, extensive metal–hydrogen 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 gold-containing 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 energy-dispersive 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 (∼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.

AB - Contrary to the electrochemical energy storage in Pd nanofilms challenged by diffusion limitations, extensive metal–hydrogen 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 gold-containing 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 energy-dispersive 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 (∼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.

KW - electrochemical hydrogen

KW - equivalent circuit model

KW - gold

KW - metallic glass

KW - palladium

KW - thin films

KW - transmission electron microscopy

KW - X-ray photoelectron spectroscopy

U2 - 10.1021/acsami.1c08560

DO - 10.1021/acsami.1c08560

M3 - Article

C2 - 34491728

AN - SCOPUS:85115636382

VL - 13.2021

SP - 42613

EP - 42623

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

SN - 1944-8244

IS - 36

ER -