TY  - JOUR
AU  - Jović, Vladimir D
AU  - Jović, Borka M
AU  - Lačnjevac, Uroš
AU  - Krstajić, Nedeljko V
AU  - Zabinski, P.
AU  - Elezović, Nevenka R.
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1167
AB  - Electrodeposited NiSn alloy coatings onto Ni 40 mesh substrate were tested for application as cathodes and anodes in the cell for alkaline water electrolysis in 30 wt% KOH at 80 degrees C. The "accelerated service life test" (ASLT) was performed for the hydrogen evolution reaction (HER), as well as for the oxygen evolution reaction (OER), and compared to that recorded for the Ni coating (Ni-dep) and Ni-mesh for both reactions. The morphology and chemical compositions of the NiSn and Ni coatings were investigated by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS), while their surface composition was investigated by X-ray photoelectron spectroscopy (XPS) before and after the ASLT for both reactions, respectively. By measuring the potential at j = 0.3 A cm (-2) it was shown that during the ASLT the NiSn alloy coating catalytic activity for the HER decreases (about 24 mV after 25 cycles), while the catalytic activity for the OER increases (about 50 mV after 25 cycles), so that the cell voltage decreases for about 26 mV. The Ni-dep and Ni-mesh electrodes catalytic activity was found to increase for the HER (for about 103 mV), as well as for the OER (for about 52 mV) during the ASLT. Hence, the cell voltage for the Ni-dep and Ni-mesh electrodes decreased from 2.402 V to 2.245 V during the ASLT, while that for the NiSn electrode decreased from 1.967 V to 1.941 V. The cell voltage saving with the NiSn electrodes amounts to about 435 mV before the ASLT and about 304 mV after the ASLT. SEM results showed that no changes in the morphology of as prepared samples could be detected after the ASLTs for both reactions. EDS analysis confirmed that some changes occurred during the ASLT, particularly for the oxygen content in the surface layer. Similar conclusions were made from the XPS analysis.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - Accelerated service life test of electrodeposited NiSn alloys as bifunctional catalysts for alkaline water electrolysis under industrial operating conditions
EP  - 25
SP  - 16
VL  - 819
DO  - 10.1016/j.jelechem.2017.06.011
ER  - 

@article{
author = "Jović, Vladimir D and Jović, Borka M and Lačnjevac, Uroš and Krstajić, Nedeljko V and Zabinski, P. and Elezović, Nevenka R.",
year = "2018",
abstract = "Electrodeposited NiSn alloy coatings onto Ni 40 mesh substrate were tested for application as cathodes and anodes in the cell for alkaline water electrolysis in 30 wt% KOH at 80 degrees C. The "accelerated service life test" (ASLT) was performed for the hydrogen evolution reaction (HER), as well as for the oxygen evolution reaction (OER), and compared to that recorded for the Ni coating (Ni-dep) and Ni-mesh for both reactions. The morphology and chemical compositions of the NiSn and Ni coatings were investigated by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS), while their surface composition was investigated by X-ray photoelectron spectroscopy (XPS) before and after the ASLT for both reactions, respectively. By measuring the potential at j = 0.3 A cm (-2) it was shown that during the ASLT the NiSn alloy coating catalytic activity for the HER decreases (about 24 mV after 25 cycles), while the catalytic activity for the OER increases (about 50 mV after 25 cycles), so that the cell voltage decreases for about 26 mV. The Ni-dep and Ni-mesh electrodes catalytic activity was found to increase for the HER (for about 103 mV), as well as for the OER (for about 52 mV) during the ASLT. Hence, the cell voltage for the Ni-dep and Ni-mesh electrodes decreased from 2.402 V to 2.245 V during the ASLT, while that for the NiSn electrode decreased from 1.967 V to 1.941 V. The cell voltage saving with the NiSn electrodes amounts to about 435 mV before the ASLT and about 304 mV after the ASLT. SEM results showed that no changes in the morphology of as prepared samples could be detected after the ASLTs for both reactions. EDS analysis confirmed that some changes occurred during the ASLT, particularly for the oxygen content in the surface layer. Similar conclusions were made from the XPS analysis.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "Accelerated service life test of electrodeposited NiSn alloys as bifunctional catalysts for alkaline water electrolysis under industrial operating conditions",
pages = "25-16",
volume = "819",
doi = "10.1016/j.jelechem.2017.06.011"
}

Jović, V. D., Jović, B. M., Lačnjevac, U., Krstajić, N. V., Zabinski, P.,& Elezović, N. R.. (2018). Accelerated service life test of electrodeposited NiSn alloys as bifunctional catalysts for alkaline water electrolysis under industrial operating conditions. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 819, 16-25.
https://doi.org/10.1016/j.jelechem.2017.06.011

Jović VD, Jović BM, Lačnjevac U, Krstajić NV, Zabinski P, Elezović NR. Accelerated service life test of electrodeposited NiSn alloys as bifunctional catalysts for alkaline water electrolysis under industrial operating conditions. in Journal of Electroanalytical Chemistry. 2018;819:16-25.
doi:10.1016/j.jelechem.2017.06.011 .

Jović, Vladimir D, Jović, Borka M, Lačnjevac, Uroš, Krstajić, Nedeljko V, Zabinski, P., Elezović, Nevenka R., "Accelerated service life test of electrodeposited NiSn alloys as bifunctional catalysts for alkaline water electrolysis under industrial operating conditions" in Journal of Electroanalytical Chemistry, 819 (2018):16-25,
https://doi.org/10.1016/j.jelechem.2017.06.011 . .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Zabinski, P.
AU  - Ercius, P.
AU  - Wytrwal, M.
AU  - Radmilović, Velimir R
AU  - Lačnjevac, Uroš
AU  - Krstajić, Nedeljko V
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1104
AB  - Tungsten based support was prepared by polycondensation of resorcinol and formaldehyde from ammonium metatungstate, in the presence cetyltrimethylammonium bromide (CTABr) surfactant. Pd nanocatalyst on this support was synthesized by borohydride reduction method. The obtained materials were characterized by High Resolution Transmission Electron Microscopy (HRTEM), Electron Energy Loss Spectroscopy (EELS), X-ray Photoelectron Spectroscopy (XPS) and electrochemical measurements. TEM analysis revealed Pd nanoparticles size in the range of a few nanometers, even the clusters of single Pd atoms. X-Ray Photoelectron Spectroscopy was applied to determine surface composition of the substrates. It was found that tungsten based support consisted of W, WC and WO3 species. The presence of metallic palladium - Pd(0) in the Pd/W"WCWO3 catalyst was revealed, as well. The catalytic activity and stability for the oxygen reduction were investigated in acid and alkaline solutions, by cyclic voltammetry and linear sweep voltammetry at the rotating disc electrode. The catalysts' activities were compared to the carbon supported Pd nanoparticles (Vulcan XC 72). WC supported Pd nanoparticles have shown high activity and superior stability, comparable even to Pt based catalysts, especially in alkaline electrolytes.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - High surface area Pd nanocatalyst on core-shell tungsten based support as a beneficial catalyst for low temperature fuel cells application
EP  - 684
SP  - 674
VL  - 247
DO  - 10.1016/j.electacta.2017.07.066
ER  - 

@article{
author = "Elezović, Nevenka R. and Zabinski, P. and Ercius, P. and Wytrwal, M. and Radmilović, Velimir R and Lačnjevac, Uroš and Krstajić, Nedeljko V",
year = "2017",
abstract = "Tungsten based support was prepared by polycondensation of resorcinol and formaldehyde from ammonium metatungstate, in the presence cetyltrimethylammonium bromide (CTABr) surfactant. Pd nanocatalyst on this support was synthesized by borohydride reduction method. The obtained materials were characterized by High Resolution Transmission Electron Microscopy (HRTEM), Electron Energy Loss Spectroscopy (EELS), X-ray Photoelectron Spectroscopy (XPS) and electrochemical measurements. TEM analysis revealed Pd nanoparticles size in the range of a few nanometers, even the clusters of single Pd atoms. X-Ray Photoelectron Spectroscopy was applied to determine surface composition of the substrates. It was found that tungsten based support consisted of W, WC and WO3 species. The presence of metallic palladium - Pd(0) in the Pd/W"WCWO3 catalyst was revealed, as well. The catalytic activity and stability for the oxygen reduction were investigated in acid and alkaline solutions, by cyclic voltammetry and linear sweep voltammetry at the rotating disc electrode. The catalysts' activities were compared to the carbon supported Pd nanoparticles (Vulcan XC 72). WC supported Pd nanoparticles have shown high activity and superior stability, comparable even to Pt based catalysts, especially in alkaline electrolytes.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "High surface area Pd nanocatalyst on core-shell tungsten based support as a beneficial catalyst for low temperature fuel cells application",
pages = "684-674",
volume = "247",
doi = "10.1016/j.electacta.2017.07.066"
}

Elezović, N. R., Zabinski, P., Ercius, P., Wytrwal, M., Radmilović, V. R., Lačnjevac, U.,& Krstajić, N. V.. (2017). High surface area Pd nanocatalyst on core-shell tungsten based support as a beneficial catalyst for low temperature fuel cells application. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 247, 674-684.
https://doi.org/10.1016/j.electacta.2017.07.066

Elezović NR, Zabinski P, Ercius P, Wytrwal M, Radmilović VR, Lačnjevac U, Krstajić NV. High surface area Pd nanocatalyst on core-shell tungsten based support as a beneficial catalyst for low temperature fuel cells application. in Electrochimica Acta. 2017;247:674-684.
doi:10.1016/j.electacta.2017.07.066 .

Elezović, Nevenka R., Zabinski, P., Ercius, P., Wytrwal, M., Radmilović, Velimir R, Lačnjevac, Uroš, Krstajić, Nedeljko V, "High surface area Pd nanocatalyst on core-shell tungsten based support as a beneficial catalyst for low temperature fuel cells application" in Electrochimica Acta, 247 (2017):674-684,
https://doi.org/10.1016/j.electacta.2017.07.066 . .