Enhanced Oxygen Evolution Reaction of Zr-Cu-Ni-Al Metallic Glass with an Oxide Layer in Alkaline Media

Baran Sarac, Yurii P. Ivanov, Matej Micusik, Maria Omastova, A. Sezai Sarac, Andrey I. Bazlov, Vladislav Zadorozhnyy, A. Lindsay Greer, Jürgen Eckert

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

1 Zitat (Scopus)


This study elaborates on the tunability of Zr and O amounts in the ZrO2 layer of a melt-spun Zr65Cu17.5Ni10Al7.5 ribbon under cyclic polarization. The formation of an amorphous Zr-rich oxide layer facilitates the oxygen evolution reaction (OER) as confirmed by the decrease in the Tafel slope from 109 to 80 mV dec–1 as well as conservation of its stability over 250 cycles and at long-term open circuit potential measurement, outperforming many of the precious and transition metal-based oxides and their composites. The evolution of additional binding energy at ∼183.5 eV (Zr3d5 Zr–OH peak) indicates hydroxide ion insertion into the Zr-based metallic glass. The magnitude of impedance (cf. 625 Ω cm2 for as-spun vs 140 Ω cm2 for after-OER at 0.6 V and 100 Hz) and characteristic frequency (c.f. 80° at 0.6 V for as-spun and 30° at 0.9 V for after-OER) vs Ag/AgCl are relatively small for the post-OER electrode compared to the as-spun counterpart, corroborating enhanced kinetics of the post-OER electrode. Modifications in the oxide layer upon the OER yield an enormous increase in ion accumulation and electron transfer with a maximum true capacitance reaching ∼0.0271 F cm–2. Thus, a homogeneous combination of inexpensive Earth-abundant metals and an amorphous structure forms a highly active and stable oxide layer to be used for future renewable energy production materials.
Seiten (von - bis)9190-9200
FachzeitschriftACS Catalysis
PublikationsstatusVeröffentlicht - 14 Juli 2022

Bibliographische Notiz

Funding Information:
Y.P.I. and A.L.G. acknowledge the support from the European Research Council under the Advanced Grant “ExtendGlass–Extending the range of the glassy state: Exploring structure and property limits in metallic glasses” (Grant ERC-2015-ADG-695487). J.E. acknowledges the ERC Proof of Concept Grant TriboMetGlass (grant ERC-2019-PoC-862485). This work was supported by the Ministry of Science and Higher Education of the Russian Federation in the framework of the federal academic leadership program Priority 2030 under increase competitiveness program of NUST ≪MISiS≫ (grant number K1-2022-032). M.M. and M.O. acknowledge support from the VEGA project 02/0006/22. This study was performed during the implementation of the project Building-up Centre for advanced materials application of the Slovak Academy of Sciences, ITMS project code 313021 T081 supported by the Research & Innovation Operational Programme funded by the ERDF.

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© 2022 American Chemical Society.

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