TY  - CONF
AU  - Gajić Krstajić, Ljiljana
AU  - Jović, Borka
AU  - Jović, Vladimir
AU  - Zabinski, Piotr
AU  - Elezović, Nevenka
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6675
AB  - Alkaline fuel cells (AFCs) have recently become attractive as environmental friendly future power sources. It was really important having in mind that in alkaline media less expensive non noble catalysts could be used. Namely, successful alkaline anion exchange membrane development enabled benefits of faster kinetics of oxygen reduction reaction in alkaline solutions. In this study electrodeposited silver-palladium alloys of various composition were investigated and tested as the prospective catalysts for direct ethanol fuel cells application. All samples were characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, as well as by electrochemical techniques: cyclic voltammetry, polarization measurements at rotating disc electrode. The electrochemical active surface area was determined from the charge values corresponding to the reduction of Pd (II) oxide, assuming 420 μC for full oxide monolayer coverage. The optimal alloy composition showing the best catalytic activity for oxygen reduction and ethanol oxidation, with as much as possible lower content of Pd, was determined. It was found that it could be possible to obtain alloys containing only ~ 20% of more noble metal – palladium, showing high activity for both anode and cathode reaction. The stability testing gave very promising results, as well.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
T1  - Cost effective alloys based catalysts for alkaline fuel cells application
SP  - 104
EP  - 104
UR  - https://hdl.handle.net/21.15107/rcub_dais_6675
ER  - 

@conference{
author = "Gajić Krstajić, Ljiljana and Jović, Borka and Jović, Vladimir and Zabinski, Piotr and Elezović, Nevenka",
year = "2019",
abstract = "Alkaline fuel cells (AFCs) have recently become attractive as environmental friendly future power sources. It was really important having in mind that in alkaline media less expensive non noble catalysts could be used. Namely, successful alkaline anion exchange membrane development enabled benefits of faster kinetics of oxygen reduction reaction in alkaline solutions. In this study electrodeposited silver-palladium alloys of various composition were investigated and tested as the prospective catalysts for direct ethanol fuel cells application. All samples were characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, as well as by electrochemical techniques: cyclic voltammetry, polarization measurements at rotating disc electrode. The electrochemical active surface area was determined from the charge values corresponding to the reduction of Pd (II) oxide, assuming 420 μC for full oxide monolayer coverage. The optimal alloy composition showing the best catalytic activity for oxygen reduction and ethanol oxidation, with as much as possible lower content of Pd, was determined. It was found that it could be possible to obtain alloys containing only ~ 20% of more noble metal – palladium, showing high activity for both anode and cathode reaction. The stability testing gave very promising results, as well.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019",
title = "Cost effective alloys based catalysts for alkaline fuel cells application",
pages = "104-104",
url = "https://hdl.handle.net/21.15107/rcub_dais_6675"
}

Gajić Krstajić, L., Jović, B., Jović, V., Zabinski, P.,& Elezović, N.. (2019). Cost effective alloys based catalysts for alkaline fuel cells application. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
Belgrade : Materials Research Society of Serbia., 104-104.
https://hdl.handle.net/21.15107/rcub_dais_6675

Gajić Krstajić L, Jović B, Jović V, Zabinski P, Elezović N. Cost effective alloys based catalysts for alkaline fuel cells application. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019. 2019;:104-104.
https://hdl.handle.net/21.15107/rcub_dais_6675 .

Gajić Krstajić, Ljiljana, Jović, Borka, Jović, Vladimir, Zabinski, Piotr, Elezović, Nevenka, "Cost effective alloys based catalysts for alkaline fuel cells application" in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 (2019):104-104,
https://hdl.handle.net/21.15107/rcub_dais_6675 .

TY  - CONF
AU  - Gajić Krstajić, Ljiljana
AU  - Radmilović, Velimir R.
AU  - Ercius, Peter
AU  - Jović, Borka
AU  - Jović, Vladimir
AU  - Zabinski, Piotr
AU  - Elezović, Nevenka
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/3633
AB  - Platinum based nanostructures on carbon support are state of the art materials for proton exchange membrane fuel cells application. Contemporary research directions in this field imply synthesis and characterization of novel carbon free catalysts supports to overcome disadvantages of carbon supported ones. We have recently synthesized platinum and palladium nanocatalysts onto different novel metal oxide based supports: titanium-oxide, tin oxide and tungsten oxide, doped by different metals (Nb, Ru, Sb), to achieve satisfactory conductivity. These novel nanostructures were characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), as well as by electrochemical techniques. The synthesized nanostructured catalysts were tested for oxygen reduction reaction. Obtained catalytic activities and stabilities were compared to the same noble metal loading catalysts on Vulcan XC-72 support. The results of comparison revealed many advantages of carbon free supported nanocatalysts, regarding both activity and stability.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018
T1  - Comparative study on noble metal based nanocatalysts on different supports for low temperature fuel cells application
SP  - 112
EP  - 112
UR  - https://hdl.handle.net/21.15107/rcub_dais_3633
ER  - 

@conference{
author = "Gajić Krstajić, Ljiljana and Radmilović, Velimir R. and Ercius, Peter and Jović, Borka and Jović, Vladimir and Zabinski, Piotr and Elezović, Nevenka",
year = "2018",
abstract = "Platinum based nanostructures on carbon support are state of the art materials for proton exchange membrane fuel cells application. Contemporary research directions in this field imply synthesis and characterization of novel carbon free catalysts supports to overcome disadvantages of carbon supported ones. We have recently synthesized platinum and palladium nanocatalysts onto different novel metal oxide based supports: titanium-oxide, tin oxide and tungsten oxide, doped by different metals (Nb, Ru, Sb), to achieve satisfactory conductivity. These novel nanostructures were characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), as well as by electrochemical techniques. The synthesized nanostructured catalysts were tested for oxygen reduction reaction. Obtained catalytic activities and stabilities were compared to the same noble metal loading catalysts on Vulcan XC-72 support. The results of comparison revealed many advantages of carbon free supported nanocatalysts, regarding both activity and stability.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018",
title = "Comparative study on noble metal based nanocatalysts on different supports for low temperature fuel cells application",
pages = "112-112",
url = "https://hdl.handle.net/21.15107/rcub_dais_3633"
}

Gajić Krstajić, L., Radmilović, V. R., Ercius, P., Jović, B., Jović, V., Zabinski, P.,& Elezović, N.. (2018). Comparative study on noble metal based nanocatalysts on different supports for low temperature fuel cells application. in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018
Belgrade : Materials Research Society of Serbia., 112-112.
https://hdl.handle.net/21.15107/rcub_dais_3633

Gajić Krstajić L, Radmilović VR, Ercius P, Jović B, Jović V, Zabinski P, Elezović N. Comparative study on noble metal based nanocatalysts on different supports for low temperature fuel cells application. in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018. 2018;:112-112.
https://hdl.handle.net/21.15107/rcub_dais_3633 .

Gajić Krstajić, Ljiljana, Radmilović, Velimir R., Ercius, Peter, Jović, Borka, Jović, Vladimir, Zabinski, Piotr, Elezović, Nevenka, "Comparative study on noble metal based nanocatalysts on different supports for low temperature fuel cells application" in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018 (2018):112-112,
https://hdl.handle.net/21.15107/rcub_dais_3633 .

TY  - JOUR
AU  - Lović, J. D.
AU  - Elezović, Nevenka
AU  - Jović, Borka
AU  - Zabinski, Piotr
AU  - Gajić-Krstajić, Ljiljana
AU  - Jović, Vladimir
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/4076
AB  - The Pd and three AgPd alloy layers (AgPd1, AgPd2 and AgPd3) were electrodeposited onto Au disc electrodes from the solution containing high concentration of chloride ions (>12 M). All coatings were investigated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), anodic linear sweep voltammetry (ALSV), while their surface composition was investigated by X-ray photoelectron spectroscopy (XPS). The AgPd1 and AgPd2 samples were electrodeposited at different constant current densities (−0.178 mA cm−2 and -0.415 mA cm−2 respectively) to the charge of −0.2 C cm−2 (thickness ∼ 0.18 μm) at a stationary disc electrode, while the sample AgPd3 was electrodeposited to the charge of −3.0 C cm−2 (thickness ∼ 2.8 μm) at a constant current density of −7.0 mA cm−2 under the conditions of convective diffusion. Samples AgPd1 and AgPd2 had similar morphologies of low roughness, while the morphology of AgPd3 was characterized by large crystals and higher roughness. The most active and the most poisoning tolerant coatings for ethanol oxidation reaction (EOR) are the AgPd3 and AgPd1 alloy samples, containing 72.6 at.% Ag – 27.4 at.% Pd and 84.7 at.% Ag – 15.2 at.% Pd respectively (XPS analysis). In this study, we demonstrated for the first time that the activity for the EOR at AgPd alloys was closely related to the amount of non-reduced Ag2O (most probably as Ag – hydroxide). Accordingly, all AgPd alloy samples had to be cycled in the potential region of Ag2O formation and reduction before the investigation of the EOR, in order to provide their catalytic activity towards the EOR. © 2018 Hydrogen Energy Publications LLC
PB  - Elsevier
T2  - International Journal of Hydrogen Energy
T1  - Electrodeposited AgPd alloy coatings as efficient catalysts for the ethanol oxidation reaction
SP  - 18498
EP  - 18508
VL  - 43
IS  - 39
DO  - 10.1016/j.ijhydene.2018.08.056
UR  - https://hdl.handle.net/21.15107/rcub_dais_4076
ER  - 

@article{
author = "Lović, J. D. and Elezović, Nevenka and Jović, Borka and Zabinski, Piotr and Gajić-Krstajić, Ljiljana and Jović, Vladimir",
year = "2018",
abstract = "The Pd and three AgPd alloy layers (AgPd1, AgPd2 and AgPd3) were electrodeposited onto Au disc electrodes from the solution containing high concentration of chloride ions (>12 M). All coatings were investigated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), anodic linear sweep voltammetry (ALSV), while their surface composition was investigated by X-ray photoelectron spectroscopy (XPS). The AgPd1 and AgPd2 samples were electrodeposited at different constant current densities (−0.178 mA cm−2 and -0.415 mA cm−2 respectively) to the charge of −0.2 C cm−2 (thickness ∼ 0.18 μm) at a stationary disc electrode, while the sample AgPd3 was electrodeposited to the charge of −3.0 C cm−2 (thickness ∼ 2.8 μm) at a constant current density of −7.0 mA cm−2 under the conditions of convective diffusion. Samples AgPd1 and AgPd2 had similar morphologies of low roughness, while the morphology of AgPd3 was characterized by large crystals and higher roughness. The most active and the most poisoning tolerant coatings for ethanol oxidation reaction (EOR) are the AgPd3 and AgPd1 alloy samples, containing 72.6 at.% Ag – 27.4 at.% Pd and 84.7 at.% Ag – 15.2 at.% Pd respectively (XPS analysis). In this study, we demonstrated for the first time that the activity for the EOR at AgPd alloys was closely related to the amount of non-reduced Ag2O (most probably as Ag – hydroxide). Accordingly, all AgPd alloy samples had to be cycled in the potential region of Ag2O formation and reduction before the investigation of the EOR, in order to provide their catalytic activity towards the EOR. © 2018 Hydrogen Energy Publications LLC",
publisher = "Elsevier",
journal = "International Journal of Hydrogen Energy",
title = "Electrodeposited AgPd alloy coatings as efficient catalysts for the ethanol oxidation reaction",
pages = "18498-18508",
volume = "43",
number = "39",
doi = "10.1016/j.ijhydene.2018.08.056",
url = "https://hdl.handle.net/21.15107/rcub_dais_4076"
}

Lović, J. D., Elezović, N., Jović, B., Zabinski, P., Gajić-Krstajić, L.,& Jović, V.. (2018). Electrodeposited AgPd alloy coatings as efficient catalysts for the ethanol oxidation reaction. in International Journal of Hydrogen Energy
Elsevier., 43(39), 18498-18508.
https://doi.org/10.1016/j.ijhydene.2018.08.056
https://hdl.handle.net/21.15107/rcub_dais_4076

Lović JD, Elezović N, Jović B, Zabinski P, Gajić-Krstajić L, Jović V. Electrodeposited AgPd alloy coatings as efficient catalysts for the ethanol oxidation reaction. in International Journal of Hydrogen Energy. 2018;43(39):18498-18508.
doi:10.1016/j.ijhydene.2018.08.056
https://hdl.handle.net/21.15107/rcub_dais_4076 .

Lović, J. D., Elezović, Nevenka, Jović, Borka, Zabinski, Piotr, Gajić-Krstajić, Ljiljana, Jović, Vladimir, "Electrodeposited AgPd alloy coatings as efficient catalysts for the ethanol oxidation reaction" in International Journal of Hydrogen Energy, 43, no. 39 (2018):18498-18508,
https://doi.org/10.1016/j.ijhydene.2018.08.056 .,
https://hdl.handle.net/21.15107/rcub_dais_4076 .

TY  - DATA
AU  - Lović, J. D.
AU  - Elezović, Nevenka
AU  - Jović, Borka
AU  - Zabinski, Piotr
AU  - Gajić-Krstajić, Ljiljana
AU  - Jović, Vladimir
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/4082
T2  - International Journal of Hydrogen Energy
T2  - International Journal of Hydrogen Energy
T1  - Supporting information for the article:    Lović, J.D., N.R. Elezović, B.M. Jović, P. Zabinski, L. Gajić-Krstajić, and V.D. Jović. 2018. “Electrodeposited AgPd Alloy Coatings as Efficient Catalysts for the Ethanol Oxidation Reaction.” International Journal of Hydrogen Energy 43 (39): 18498–508. https://doi.org/10.1016/j.ijhydene.2018.08.056
VL  - 43
IS  - 39
UR  - https://hdl.handle.net/21.15107/rcub_dais_4082
ER  - 

@misc{
author = "Lović, J. D. and Elezović, Nevenka and Jović, Borka and Zabinski, Piotr and Gajić-Krstajić, Ljiljana and Jović, Vladimir",
year = "2018",
journal = "International Journal of Hydrogen Energy, International Journal of Hydrogen Energy",
title = "Supporting information for the article:    Lović, J.D., N.R. Elezović, B.M. Jović, P. Zabinski, L. Gajić-Krstajić, and V.D. Jović. 2018. “Electrodeposited AgPd Alloy Coatings as Efficient Catalysts for the Ethanol Oxidation Reaction.” International Journal of Hydrogen Energy 43 (39): 18498–508. https://doi.org/10.1016/j.ijhydene.2018.08.056",
volume = "43",
number = "39",
url = "https://hdl.handle.net/21.15107/rcub_dais_4082"
}

Lović, J. D., Elezović, N., Jović, B., Zabinski, P., Gajić-Krstajić, L.,& Jović, V.. (2018). Supporting information for the article:    Lović, J.D., N.R. Elezović, B.M. Jović, P. Zabinski, L. Gajić-Krstajić, and V.D. Jović. 2018. “Electrodeposited AgPd Alloy Coatings as Efficient Catalysts for the Ethanol Oxidation Reaction.” International Journal of Hydrogen Energy 43 (39): 18498–508. https://doi.org/10.1016/j.ijhydene.2018.08.056. in International Journal of Hydrogen Energy, 43(39).
https://hdl.handle.net/21.15107/rcub_dais_4082

Lović JD, Elezović N, Jović B, Zabinski P, Gajić-Krstajić L, Jović V. Supporting information for the article:    Lović, J.D., N.R. Elezović, B.M. Jović, P. Zabinski, L. Gajić-Krstajić, and V.D. Jović. 2018. “Electrodeposited AgPd Alloy Coatings as Efficient Catalysts for the Ethanol Oxidation Reaction.” International Journal of Hydrogen Energy 43 (39): 18498–508. https://doi.org/10.1016/j.ijhydene.2018.08.056. in International Journal of Hydrogen Energy. 2018;43(39).
https://hdl.handle.net/21.15107/rcub_dais_4082 .

Lović, J. D., Elezović, Nevenka, Jović, Borka, Zabinski, Piotr, Gajić-Krstajić, Ljiljana, Jović, Vladimir, "Supporting information for the article:    Lović, J.D., N.R. Elezović, B.M. Jović, P. Zabinski, L. Gajić-Krstajić, and V.D. Jović. 2018. “Electrodeposited AgPd Alloy Coatings as Efficient Catalysts for the Ethanol Oxidation Reaction.” International Journal of Hydrogen Energy 43 (39): 18498–508. https://doi.org/10.1016/j.ijhydene.2018.08.056" in International Journal of Hydrogen Energy, 43, no. 39 (2018),
https://hdl.handle.net/21.15107/rcub_dais_4082 .

TY  - CONF
AU  - Gajić Krstajić, Ljiljana
AU  - Jović, Vladimir
AU  - Jović, Borka
AU  - Lačnjevac, Uroš
AU  - Krstajić, Nedeljko
AU  - Zabinski, Piotr
AU  - Elezović, Nevenka
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/15445
AB  - Electrodeposited NiSn alloy coatings were tested for application as cathodes and anodes in the cell for alkaline water electrolysis in 30 wt.% KOH at 80 ºC. The "accelerated service life test" (ASLT) was performed for HER and OER reactions, and compared to those for Ni electrode. The morphology and chemical compositions of the NiSn and Ni coatings were investigated by SEM and EDS, while their surface composition was investigated by XPS before and after the ASLT for both reactions, respectively. It was shown that the cell voltage at j = 0.3 A cm-2 saving with the NiSn electrodes amounts to about 435 mV before 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 and XPS analysis confirmed that some changes occurred during the ASLT, particularly for the oxygen content in the surface layer. This work was financially supported by Ministry of Education, Science and Technological Development Republic of Serbia, under Contract No. 172054.
he authors would like to acknowledge networking support by the COST Action MP1407.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017
T1  - Accelerated service life test of electrodeposited NiSn coatings as bifunctional hydrogen and oxygen evolution catalysts for alkaline water electrolysis
SP  - 92
EP  - 92
UR  - https://hdl.handle.net/21.15107/rcub_dais_15445
ER  - 

@conference{
author = "Gajić Krstajić, Ljiljana and Jović, Vladimir and Jović, Borka and Lačnjevac, Uroš and Krstajić, Nedeljko and Zabinski, Piotr and Elezović, Nevenka",
year = "2017",
abstract = "Electrodeposited NiSn alloy coatings were tested for application as cathodes and anodes in the cell for alkaline water electrolysis in 30 wt.% KOH at 80 ºC. The "accelerated service life test" (ASLT) was performed for HER and OER reactions, and compared to those for Ni electrode. The morphology and chemical compositions of the NiSn and Ni coatings were investigated by SEM and EDS, while their surface composition was investigated by XPS before and after the ASLT for both reactions, respectively. It was shown that the cell voltage at j = 0.3 A cm-2 saving with the NiSn electrodes amounts to about 435 mV before 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 and XPS analysis confirmed that some changes occurred during the ASLT, particularly for the oxygen content in the surface layer. This work was financially supported by Ministry of Education, Science and Technological Development Republic of Serbia, under Contract No. 172054.
he authors would like to acknowledge networking support by the COST Action MP1407.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017",
title = "Accelerated service life test of electrodeposited NiSn coatings as bifunctional hydrogen and oxygen evolution catalysts for alkaline water electrolysis",
pages = "92-92",
url = "https://hdl.handle.net/21.15107/rcub_dais_15445"
}

Gajić Krstajić, L., Jović, V., Jović, B., Lačnjevac, U., Krstajić, N., Zabinski, P.,& Elezović, N.. (2017). Accelerated service life test of electrodeposited NiSn coatings as bifunctional hydrogen and oxygen evolution catalysts for alkaline water electrolysis. in Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017
Belgrade : Materials Research Society of Serbia., 92-92.
https://hdl.handle.net/21.15107/rcub_dais_15445

Gajić Krstajić L, Jović V, Jović B, Lačnjevac U, Krstajić N, Zabinski P, Elezović N. Accelerated service life test of electrodeposited NiSn coatings as bifunctional hydrogen and oxygen evolution catalysts for alkaline water electrolysis. in Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017. 2017;:92-92.
https://hdl.handle.net/21.15107/rcub_dais_15445 .

Gajić Krstajić, Ljiljana, Jović, Vladimir, Jović, Borka, Lačnjevac, Uroš, Krstajić, Nedeljko, Zabinski, Piotr, Elezović, Nevenka, "Accelerated service life test of electrodeposited NiSn coatings as bifunctional hydrogen and oxygen evolution catalysts for alkaline water electrolysis" in Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017 (2017):92-92,
https://hdl.handle.net/21.15107/rcub_dais_15445 .