Porosity and thickness effect of Pd-Cu-Si metallic glasses on electrocatalytic hydrogen production and storage

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dc.authoridSarac, Baran/0000-0002-0130-3914
dc.authoridSarac, A.Sezai/0000-0001-7513-1740
dc.contributor.authorSarac, B.
dc.contributor.authorKarazehir, T.
dc.contributor.authorYuece, E.
dc.contributor.authorMuehlbacher, M.
dc.contributor.authorSarac, A. S.
dc.contributor.authorEckert, J.
dc.date.accessioned2025-01-06T17:43:34Z
dc.date.available2025-01-06T17:43:34Z
dc.date.issued2021
dc.description.abstractThis contribution places emphasis on tuning pore architecture and film thickness of mesoporous Pd-Cu- Si thin films sputtered on Si/SiO2 substrates for enhanced electrocatalytic and hydrogen sorption/desorp-tion activity and their comparison with the state-of-the-art thin film electrocatalysts. Small Tafel slope of 43 mV dec-1 for 1250 nm thick coating on 2 gm diameter pores with 4.2 gm interspacing electrocatalyst with comparable hydrogen overpotentials to the literature suggests its use for standard fuel cells. The lar-gest hydrogen sorption has been attained for the 250 nm thick electrocatalyst on 5 gm pore diameter with 12 gm interspacing (2189 gC cm-2 per CV cycle), making it possible for rapid storage systems. Moreover, the charge transfer resistance described by an equivalent circuit model has an excellent cor-relation with Tafel slopes. Along with its very low Tafel slope of 42 mV dec-1 10 nm thick electrocatalyst on 2 gm diameter pores with 4.2 gm interspacing has the highest capacitive response of ti 0.001 S sn cm-2 and is promising to be used as a nano-charger and hydrogen sensor. The findings of Si/SiO2 supported mesoporous Pd-based metallic glass (MG) assemblies suggest a similar design applicability for crystalline systems and other MG types. (c) 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).
dc.description.sponsorshipAustrian Science Fund (FWF) [I3937-N36]; European Research Council [ERC-2013-ADG-340025]; Ministry of Science and Higher Education of the Russian Federation [K3-2015-036]
dc.description.sponsorshipThe authors thank A. Asci for metallographic sample preparation, M. Aydin for AFM imaging, Y. P. Ivanov for TEM imaging, B. Kaynak for XPS analysis, C. Mitterer for providing the sputtering device and V. Terziyska for synthesizing the TFMGs. This work was supported by the Austrian Science Fund (FWF): I3937-N36, the European Research Council under the Advanced Grants ``INTELHYB -Next generation of complex metallic materials in intelligent hybrid structures(Grant ERC-2013-ADG-340025), and the Ministry of Science and Higher Education of the Russian Federation in the framework of the Increase Competitiveness Program of NUST << MISiS >> (grant number K3-2015-036).
dc.identifier.doi10.1016/j.matdes.2021.110099
dc.identifier.issn0264-1275
dc.identifier.issn1873-4197
dc.identifier.scopus2-s2.0-85114794626
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.matdes.2021.110099
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2719
dc.identifier.volume210
dc.identifier.wosWOS:000697476800006
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofMaterials & Design
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subjectMetallic glass
dc.subjectThin film
dc.subjectHydrogen evolution reaction
dc.subjectPolarization
dc.subjectHydrogen storage
dc.subjectElectrochemical circuit modeling
dc.titlePorosity and thickness effect of Pd-Cu-Si metallic glasses on electrocatalytic hydrogen production and storage
dc.typeArticle

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