Experimental and theoretical study on hydrogen production by using Ag nanoparticle-decorated graphite/Ni cathode

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dc.authoridGurdal, Yeliz/0000-0002-6245-891X
dc.authoridDogru Mert, Basak/0000-0002-2270-9032
dc.contributor.authorYildiz, Resit
dc.contributor.authorDogru Mert, Basak
dc.contributor.authorKarazehir, Tolga
dc.contributor.authorGurdal, Yeliz
dc.contributor.authorToprak Doslu, Serap
dc.date.accessioned2025-01-06T17:36:13Z
dc.date.available2025-01-06T17:36:13Z
dc.date.issued2021
dc.description.abstractIn this study, graphite (G) electrode was coated with nickel and decorated with silver nanoparticles (G/Ni/Ag) with the help of galvanostatic method, and electrodes were used as a cathode in alkaline water electrolysis system. The characterization was achieved using X-ray diffraction and field emission scanning electron microscopy. Hydrogen evolution performance of electrodes was investigated via cyclic voltammetry, chronoamperometry, cathodic polarization curves, and electrochemical impedance measurements. Electrochemical results showed that hydrogen production efficiency significantly increased and charge transfer resistance decreased via G/Ni/Ag. The electrochemical water splitting performance of G/Ni/Ag, was established in a joint experimental and computational effort. Water and proton adsorption on Ag-decorated Ni surface were investigated using density functional theory. Electronic structure calculations identified the role of Ag adatom and Ni surface on water and proton adsorptions. From the computational studies, O in water was more reliable to adsorb at the bridge position of the Ag and Ni atoms, leading improved orbital overlap between H and Ni atoms and maximized chemical and physical interactions between the H2O molecules. Therefore, the Ag-decorated Ni(111) surface provides preferable adsorption site for the O atom in water and direct interactions between water Hs and available surface Ni atoms promote water dissociation.
dc.description.sponsorshipMardin Artuklu University Research Fund Office [MAU.BAP.18]
dc.description.sponsorshipThe authors are greatly thankful to Mardin Artuklu University Research Fund Office for the financial support (Project Number: MAU.BAP.18.SYO.021).
dc.identifier.doi10.1002/er.6068
dc.identifier.endpage4080
dc.identifier.issn0363-907X
dc.identifier.issn1099-114X
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85094206493
dc.identifier.scopusqualityQ1
dc.identifier.startpage4068
dc.identifier.urihttps://doi.org/10.1002/er.6068
dc.identifier.urihttps://hdl.handle.net/20.500.14669/1807
dc.identifier.volume45
dc.identifier.wosWOS:000582775800001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofInternational Journal of Energy Research
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subjectalkaline electrolysis
dc.subjectG
dc.subjectNi
dc.subjectAg cathode
dc.subjecthydrogen production
dc.titleExperimental and theoretical study on hydrogen production by using Ag nanoparticle-decorated graphite/Ni cathode
dc.typeArticle

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