TY  - JOUR
AU  - Petričević, Aleksandar
AU  - Jović, Vladimir D
AU  - Krstajic Pajic, Mila
AU  - Marzec, M.
AU  - Gajevska, M.
AU  - Zabinski, Piotr
AU  - Elezović, Nevenka R.
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2341
AB  - The oxygen reduction reaction was investigated at 10 monolayers (MLs) of Pt electrodeposited on (Nb–Ti)2AlC substrate. Following the discussion of detailed kinetics and electrodeposition optimisation in the authors’ previous paper, the focus of this research was on stability testing. Previously performed optimisation results showed the best activity shown by 10 monolayers of Pt. Catalyst characterisation was performed by scanning electron microscopy, X-ray photoelectron spectroscopy and transmission electron microscopy. SEM, EDS and XPS analysis showed that the surface was covered with a homogeneous layer of Pt. TEM analysis of a cross-section confirmed the presence of Pt layer of thickness ∼3.5 nm, corresponding to the 10 MLs of Pt. Although the mass activity for the ORR at 0.8 V vs. RHE of 37.4 A g−1 was comparable with the best one for the Pt/C benchmark, US Department of Energy Protocols revealed excellent catalyst stability – the loss of electrochemically active surface area (EASA) was found to be only 9.3%.
PB  - Taylor and Francis
T2  - Transactions of the IMF
T1  - Ultra-low Pt loading catalyst on (Nb–Ti)2AlC support as advanced material for low-temperature fuel cell application
DO  - 10.1080/00202967.2023.2281806
ER  - 

@article{
author = "Petričević, Aleksandar and Jović, Vladimir D and Krstajic Pajic, Mila and Marzec, M. and Gajevska, M. and Zabinski, Piotr and Elezović, Nevenka R.",
year = "2023",
abstract = "The oxygen reduction reaction was investigated at 10 monolayers (MLs) of Pt electrodeposited on (Nb–Ti)2AlC substrate. Following the discussion of detailed kinetics and electrodeposition optimisation in the authors’ previous paper, the focus of this research was on stability testing. Previously performed optimisation results showed the best activity shown by 10 monolayers of Pt. Catalyst characterisation was performed by scanning electron microscopy, X-ray photoelectron spectroscopy and transmission electron microscopy. SEM, EDS and XPS analysis showed that the surface was covered with a homogeneous layer of Pt. TEM analysis of a cross-section confirmed the presence of Pt layer of thickness ∼3.5 nm, corresponding to the 10 MLs of Pt. Although the mass activity for the ORR at 0.8 V vs. RHE of 37.4 A g−1 was comparable with the best one for the Pt/C benchmark, US Department of Energy Protocols revealed excellent catalyst stability – the loss of electrochemically active surface area (EASA) was found to be only 9.3%.",
publisher = "Taylor and Francis",
journal = "Transactions of the IMF",
title = "Ultra-low Pt loading catalyst on (Nb–Ti)2AlC support as advanced material for low-temperature fuel cell application",
doi = "10.1080/00202967.2023.2281806"
}

Petričević, A., Jović, V. D., Krstajic Pajic, M., Marzec, M., Gajevska, M., Zabinski, P.,& Elezović, N. R.. (2023). Ultra-low Pt loading catalyst on (Nb–Ti)2AlC support as advanced material for low-temperature fuel cell application. in Transactions of the IMF
Taylor and Francis..
https://doi.org/10.1080/00202967.2023.2281806

Petričević A, Jović VD, Krstajic Pajic M, Marzec M, Gajevska M, Zabinski P, Elezović NR. Ultra-low Pt loading catalyst on (Nb–Ti)2AlC support as advanced material for low-temperature fuel cell application. in Transactions of the IMF. 2023;.
doi:10.1080/00202967.2023.2281806 .

Petričević, Aleksandar, Jović, Vladimir D, Krstajic Pajic, Mila, Marzec, M., Gajevska, M., Zabinski, Piotr, Elezović, Nevenka R., "Ultra-low Pt loading catalyst on (Nb–Ti)2AlC support as advanced material for low-temperature fuel cell application" in Transactions of the IMF (2023),
https://doi.org/10.1080/00202967.2023.2281806 . .

TY  - JOUR
AU  - Lačnjevac, Uroš
AU  - Vasilic, Rastko
AU  - Tokarski, Tomasz
AU  - Cios, Grzegorz
AU  - Zabinski, Piotr
AU  - Elezović, Nevenka R.
AU  - Krstajić, Nedeljko V
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1171
AB  - Noble metal-based materials are inevitable components of cathodes for the hydrogen evolution reaction (HER) in future water electrolysis systems for clean hydrogen fuel production. However, designing active and durable nanostructured catalysts with low amount of costly noble metals is still a great challenge. Herein, we show that Pd nanoparticles (NPs) can be synthesized on the highly developed surface of anodically grown TiO2 nanotube (TNT) arrays by applying a simple galvanic displacement strategy. In a two-step procedure, air-annealed TNT arrays are first cathodically protonated and then partially reoxidized by Pd(II) ions from a PdCl2 solution while providing a scaffold for the metallic Pd deposit. Structural and electrochemical characterizations reveal that the Pd content and the width of the Pd-populated zone of the tube walls are in correlation with the tube length. The Pd"TNT composites display remarkable HER activity in 1 M HClO4 delivering a current density of -10 mA cm(-2) at an overpotential of -38 mV and a Tafel slope of only -13 mV/dec. More impressively, the mass and apparent activity of the Pd"TNTs is superior to even commercial Pt/C at higher current densities. The composites also show stable chronopotentiometric response over 25 h and a negligible HER overpotential increase after potential cycling tests. The exceptional performance of the Pd"TNT cathodes is assigned to the unique semiconducting properties of the three-dimensional, interactive TNT supporting structures that, on the one hand, provide abundance of Pd active sites with optimized atomic hydrogen binding energy for the cathodic HER, but on the other hand, prevent anodic degradation of the Pd catalyst.
PB  - Elsevier Science Bv, Amsterdam
T2  - Nano Energy
T1  - Deposition of Pd nanoparticles on the walls of cathodically hydrogenated TiO2 nanotube arrays via galvanic displacement: A novel route to produce exceptionally active and durable composite electrocatalysts for cost-effective hydrogen evolution
EP  - 538
SP  - 527
VL  - 47
DO  - 10.1016/j.nanoen.2018.03.040
ER  - 

@article{
author = "Lačnjevac, Uroš and Vasilic, Rastko and Tokarski, Tomasz and Cios, Grzegorz and Zabinski, Piotr and Elezović, Nevenka R. and Krstajić, Nedeljko V",
year = "2018",
abstract = "Noble metal-based materials are inevitable components of cathodes for the hydrogen evolution reaction (HER) in future water electrolysis systems for clean hydrogen fuel production. However, designing active and durable nanostructured catalysts with low amount of costly noble metals is still a great challenge. Herein, we show that Pd nanoparticles (NPs) can be synthesized on the highly developed surface of anodically grown TiO2 nanotube (TNT) arrays by applying a simple galvanic displacement strategy. In a two-step procedure, air-annealed TNT arrays are first cathodically protonated and then partially reoxidized by Pd(II) ions from a PdCl2 solution while providing a scaffold for the metallic Pd deposit. Structural and electrochemical characterizations reveal that the Pd content and the width of the Pd-populated zone of the tube walls are in correlation with the tube length. The Pd"TNT composites display remarkable HER activity in 1 M HClO4 delivering a current density of -10 mA cm(-2) at an overpotential of -38 mV and a Tafel slope of only -13 mV/dec. More impressively, the mass and apparent activity of the Pd"TNTs is superior to even commercial Pt/C at higher current densities. The composites also show stable chronopotentiometric response over 25 h and a negligible HER overpotential increase after potential cycling tests. The exceptional performance of the Pd"TNT cathodes is assigned to the unique semiconducting properties of the three-dimensional, interactive TNT supporting structures that, on the one hand, provide abundance of Pd active sites with optimized atomic hydrogen binding energy for the cathodic HER, but on the other hand, prevent anodic degradation of the Pd catalyst.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Nano Energy",
title = "Deposition of Pd nanoparticles on the walls of cathodically hydrogenated TiO2 nanotube arrays via galvanic displacement: A novel route to produce exceptionally active and durable composite electrocatalysts for cost-effective hydrogen evolution",
pages = "538-527",
volume = "47",
doi = "10.1016/j.nanoen.2018.03.040"
}

Lačnjevac, U., Vasilic, R., Tokarski, T., Cios, G., Zabinski, P., Elezović, N. R.,& Krstajić, N. V.. (2018). Deposition of Pd nanoparticles on the walls of cathodically hydrogenated TiO2 nanotube arrays via galvanic displacement: A novel route to produce exceptionally active and durable composite electrocatalysts for cost-effective hydrogen evolution. in Nano Energy
Elsevier Science Bv, Amsterdam., 47, 527-538.
https://doi.org/10.1016/j.nanoen.2018.03.040

Lačnjevac U, Vasilic R, Tokarski T, Cios G, Zabinski P, Elezović NR, Krstajić NV. Deposition of Pd nanoparticles on the walls of cathodically hydrogenated TiO2 nanotube arrays via galvanic displacement: A novel route to produce exceptionally active and durable composite electrocatalysts for cost-effective hydrogen evolution. in Nano Energy. 2018;47:527-538.
doi:10.1016/j.nanoen.2018.03.040 .

Lačnjevac, Uroš, Vasilic, Rastko, Tokarski, Tomasz, Cios, Grzegorz, Zabinski, Piotr, Elezović, Nevenka R., Krstajić, Nedeljko V, "Deposition of Pd nanoparticles on the walls of cathodically hydrogenated TiO2 nanotube arrays via galvanic displacement: A novel route to produce exceptionally active and durable composite electrocatalysts for cost-effective hydrogen evolution" in Nano Energy, 47 (2018):527-538,
https://doi.org/10.1016/j.nanoen.2018.03.040 . .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Zabinski, Piotr
AU  - Krstajic-Pajic, M. N.
AU  - Tokarski, Tomasz
AU  - Jović, Borka M
AU  - Jović, Vladimir D
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1131
AB  - The AgPd alloys were electrodeposited onto Au and glassy carbon disc electrodes from the solution containing 0 001 mol dm(-3) PdCl2 + 0.04 mol dm(-3) AgCl + 0.1 mol dm(-3) HCl + 12 mol dm(-3) LiCl under the non-stationary diffusion (quiescent electrolyte) and convective diffusion (omega = 1000 rpm) to the different amounts of charge and at different current densities. Electro-deposited alloy layers were characterized by the anodic linear sweep voltam-metry (ALSV), scanning electron microscopy, energy dispersive X-ray spectro-scopy (EDS) and X-ray photoelectron spectroscopy (XPS). The compositions of the AgPd alloys determined by the EDS were almost identical to the theoretically predicted ones, while the compositions obtained by XPS and ALSV analysis were similar to each other, but different from those obtained by EDS. Deviation from the theoretically predicted values (determined by the ratio j(L)(Pd)/j(Ag)) was more pronounced at lower current densities and lower charges of AgPd alloys electrodeposition, due to the lower current efficiencies for alloys electrodeposition. The ALSV analysis indicated the presence of Ag and Pd, expressed by two ALSV peaks, and in some cases the presence of the additional peak, which was found to correspond to the dissolution of large AgPd crystals, formed at thicker electrodeposits (higher electrodeposition charge), indicating, for the first time, that besides the phase structure, the morphology of alloy electrodeposit could also influence the shape of the ALSV response. In addition to Ag and Pd, the XPS analysis confirmed the presence of AgCl at the surface of samples electrodeposited to low thicknesses (amounts of charge).
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Electrochemical deposition and characterization of AgPd alloy layers
EP  - 609
IS  - 5
SP  - 593
VL  - 83
DO  - 10.2298/JSC171103011E
ER  - 

@article{
author = "Elezović, Nevenka R. and Zabinski, Piotr and Krstajic-Pajic, M. N. and Tokarski, Tomasz and Jović, Borka M and Jović, Vladimir D",
year = "2018",
abstract = "The AgPd alloys were electrodeposited onto Au and glassy carbon disc electrodes from the solution containing 0 001 mol dm(-3) PdCl2 + 0.04 mol dm(-3) AgCl + 0.1 mol dm(-3) HCl + 12 mol dm(-3) LiCl under the non-stationary diffusion (quiescent electrolyte) and convective diffusion (omega = 1000 rpm) to the different amounts of charge and at different current densities. Electro-deposited alloy layers were characterized by the anodic linear sweep voltam-metry (ALSV), scanning electron microscopy, energy dispersive X-ray spectro-scopy (EDS) and X-ray photoelectron spectroscopy (XPS). The compositions of the AgPd alloys determined by the EDS were almost identical to the theoretically predicted ones, while the compositions obtained by XPS and ALSV analysis were similar to each other, but different from those obtained by EDS. Deviation from the theoretically predicted values (determined by the ratio j(L)(Pd)/j(Ag)) was more pronounced at lower current densities and lower charges of AgPd alloys electrodeposition, due to the lower current efficiencies for alloys electrodeposition. The ALSV analysis indicated the presence of Ag and Pd, expressed by two ALSV peaks, and in some cases the presence of the additional peak, which was found to correspond to the dissolution of large AgPd crystals, formed at thicker electrodeposits (higher electrodeposition charge), indicating, for the first time, that besides the phase structure, the morphology of alloy electrodeposit could also influence the shape of the ALSV response. In addition to Ag and Pd, the XPS analysis confirmed the presence of AgCl at the surface of samples electrodeposited to low thicknesses (amounts of charge).",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Electrochemical deposition and characterization of AgPd alloy layers",
pages = "609-593",
number = "5",
volume = "83",
doi = "10.2298/JSC171103011E"
}

Elezović, N. R., Zabinski, P., Krstajic-Pajic, M. N., Tokarski, T., Jović, B. M.,& Jović, V. D.. (2018). Electrochemical deposition and characterization of AgPd alloy layers. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 83(5), 593-609.
https://doi.org/10.2298/JSC171103011E

Elezović NR, Zabinski P, Krstajic-Pajic MN, Tokarski T, Jović BM, Jović VD. Electrochemical deposition and characterization of AgPd alloy layers. in Journal of the Serbian Chemical Society. 2018;83(5):593-609.
doi:10.2298/JSC171103011E .

Elezović, Nevenka R., Zabinski, Piotr, Krstajic-Pajic, M. N., Tokarski, Tomasz, Jović, Borka M, Jović, Vladimir D, "Electrochemical deposition and characterization of AgPd alloy layers" in Journal of the Serbian Chemical Society, 83, no. 5 (2018):593-609,
https://doi.org/10.2298/JSC171103011E . .