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Kinetics of the hydrogen evolution reaction on Ni-(Ebonex-supported Ru) composite coatings in alkaline solution
dc.creator | Lačnjevac, Uroš | |
dc.creator | Jović, Borka M | |
dc.creator | Jović, Vladimir D | |
dc.creator | Radmilović, Velimir R | |
dc.creator | Krstajić, Nedeljko V | |
dc.date.accessioned | 2022-04-05T14:42:16Z | |
dc.date.accessioned | 2023-02-01T12:11:19Z | |
dc.date.available | 2022-04-05T14:42:16Z | |
dc.date.available | 2023-02-01T12:11:19Z | |
dc.date.issued | 2013 | |
dc.identifier.issn | 0360-3199 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5703 | |
dc.description.abstract | The hydrogen evolution reaction (HER) was studied on Ni, Ni-Ebonex and Ni-(Ebonex-Ru) coatings in 1 mol dm(-3) NaOH solution at 25 degrees C. The composite coatings were electro-deposited from a nickel Watts-type bath containing suspended Ebonex (chemical composition mainly Ti4O7) or Ebonex-supported Ru(10 wt.%) particles (0-10 g dm(-3)) onto Ni mesh substrate. The electrodes were investigated by cyclic voltammetry (CV), transmission electron microscopy (TEM) and scanning electron microscopy (SEM) in combination with energy dispersive X-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS), electrochemical impedance spectroscopy (EIS) and polarization measurements. These investigations showed that the roughness factor of the Ni-(Ebonex-Ru) and the Ni-Ebonex coating was 29 and 6 times higher than that of a pure Ni coating, respectively. In the whole potential range of the HER only one Tafel slope of about -120 mV was present at the polarization curves of Ni and Ni-Ebonex electrodes, with increased activity of the latter being attributed only to the increase of the electrochemically active surface area. The Ni(Ebonex-Ru) electrodes exhibited the highest intrinsic catalytic activity with two Tafel slopes, indicating also that the HER takes place exclusively. on Ru active sites. | en |
dc.publisher | Pergamon-Elsevier Science Ltd, Oxford | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172054/RS// | |
dc.rights | restrictedAccess | |
dc.source | International Journal of Hydrogen Energy | |
dc.subject | Ni-composite coating | en |
dc.subject | Magneli phases | en |
dc.subject | Kinetics | en |
dc.subject | H-2 evolution | en |
dc.subject | Electrocatalysis | en |
dc.title | Kinetics of the hydrogen evolution reaction on Ni-(Ebonex-supported Ru) composite coatings in alkaline solution | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 10190 | |
dc.citation.issue | 25 | |
dc.citation.other | 38(25): 10178-10190 | |
dc.citation.rank | M21 | |
dc.citation.spage | 10178 | |
dc.citation.volume | 38 | |
dc.identifier.doi | 10.1016/j.ijhydene.2013.06.037 | |
dc.identifier.scopus | 2-s2.0-84883135492 | |
dc.identifier.wos | 000324563100003 | |
dc.type.version | publishedVersion |