TY  - JOUR
AU  - Lović, Jelena
AU  - Eraković Pantović, Sanja
AU  - Rakočević, Lazar
AU  - Ignjatović, Nenad L.
AU  - Dimitrijević, Silvana
AU  - Nikolić, Nebojša D.
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5515
AB  - Sn-Pd electrocatalysts with a constant atomic ratio of 60 at.% Sn‒40 at.% Pd suitable for 
potential application in direct ethanol fuel cells were synthesized using a novel two-step electrodeposition method. First, Sn was electrodeposited in various forms of dendrites, from spear-like and needle-like to individual fern-like dendrites to a network of intertwined fern-like dendrites, by varying the cathodic potential and then performing electrodeposition of Pd at a constant current 
density in the second step. A morphological and elemental analysis of Sn and Sn-Pd electrocatalysts was performed using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) techniques, while the size of Sn dendrites was analyzed using the particle size distribution (PSD) method. Cyclic voltammetry (CV) and chronoamperometry were applied in order to study the catalytic behavior of Sn-Pd electrocatalysts in the ethanol oxidation reaction (EOR), while CO stripping was used to estimate the antipoisoning capability of the electrocatalysts. The Sn surface morphology of the sub-layer was highly correlated with the electrocatalytic activity of the examined Sn-Pd electrocatalysts. The high activity it presented towards the EOR showed the suitability of the Sn-Pd electrocatalyst constructed from individual fern-like Sn dendrites as a sub-layer. Compared to Pd alone, this Sn-Pd catalyst showed more than 3 times higher activity and improved EOR kinetics. This enhancement in the catalytic activity of the Sn-Pd electrocatalysts is attributed to both the morphological characteristics of Sn as a sub-layer and the bifunctional effect.
PB  - MDPI
T2  - Processes
T1  - A Novel Two-Step Electrochemical Deposition Method for  Sn-Pd Electrocatalyst Synthesis for a Potential Application in  Direct Ethanol Fuel Cells
VL  - 11
IS  - 1
SP  - 120
DO  - 10.3390/pr11010120
ER  - 

@article{
author = "Lović, Jelena and Eraković Pantović, Sanja and Rakočević, Lazar and Ignjatović, Nenad L. and Dimitrijević, Silvana and Nikolić, Nebojša D.",
year = "2023",
abstract = "Sn-Pd electrocatalysts with a constant atomic ratio of 60 at.% Sn‒40 at.% Pd suitable for 
potential application in direct ethanol fuel cells were synthesized using a novel two-step electrodeposition method. First, Sn was electrodeposited in various forms of dendrites, from spear-like and needle-like to individual fern-like dendrites to a network of intertwined fern-like dendrites, by varying the cathodic potential and then performing electrodeposition of Pd at a constant current 
density in the second step. A morphological and elemental analysis of Sn and Sn-Pd electrocatalysts was performed using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) techniques, while the size of Sn dendrites was analyzed using the particle size distribution (PSD) method. Cyclic voltammetry (CV) and chronoamperometry were applied in order to study the catalytic behavior of Sn-Pd electrocatalysts in the ethanol oxidation reaction (EOR), while CO stripping was used to estimate the antipoisoning capability of the electrocatalysts. The Sn surface morphology of the sub-layer was highly correlated with the electrocatalytic activity of the examined Sn-Pd electrocatalysts. The high activity it presented towards the EOR showed the suitability of the Sn-Pd electrocatalyst constructed from individual fern-like Sn dendrites as a sub-layer. Compared to Pd alone, this Sn-Pd catalyst showed more than 3 times higher activity and improved EOR kinetics. This enhancement in the catalytic activity of the Sn-Pd electrocatalysts is attributed to both the morphological characteristics of Sn as a sub-layer and the bifunctional effect.",
publisher = "MDPI",
journal = "Processes",
title = "A Novel Two-Step Electrochemical Deposition Method for  Sn-Pd Electrocatalyst Synthesis for a Potential Application in  Direct Ethanol Fuel Cells",
volume = "11",
number = "1",
pages = "120",
doi = "10.3390/pr11010120"
}

Lović, J., Eraković Pantović, S., Rakočević, L., Ignjatović, N. L., Dimitrijević, S.,& Nikolić, N. D.. (2023). A Novel Two-Step Electrochemical Deposition Method for  Sn-Pd Electrocatalyst Synthesis for a Potential Application in  Direct Ethanol Fuel Cells. in Processes
MDPI., 11(1), 120.
https://doi.org/10.3390/pr11010120

Lović J, Eraković Pantović S, Rakočević L, Ignjatović NL, Dimitrijević S, Nikolić ND. A Novel Two-Step Electrochemical Deposition Method for  Sn-Pd Electrocatalyst Synthesis for a Potential Application in  Direct Ethanol Fuel Cells. in Processes. 2023;11(1):120.
doi:10.3390/pr11010120 .

Lović, Jelena, Eraković Pantović, Sanja, Rakočević, Lazar, Ignjatović, Nenad L., Dimitrijević, Silvana, Nikolić, Nebojša D., "A Novel Two-Step Electrochemical Deposition Method for  Sn-Pd Electrocatalyst Synthesis for a Potential Application in  Direct Ethanol Fuel Cells" in Processes, 11, no. 1 (2023):120,
https://doi.org/10.3390/pr11010120 . .

TY  - JOUR
AU  - Andrić, Stevan
AU  - Tomašević-Ilić, Tijana
AU  - Rakočević, Lazar
AU  - Vasiljević-Radović, Dana
AU  - Spasenović, Marko
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5611
AB  - Measuring relative humidity is important for a myriad of industries, including production, agriculture, environmental monitoring, and medicine. Thin-film, fast-response sensors are particularly interesting for wearable applications, such as monitoring breathing. We report on humidity sensors made from graphene deposited as a thin film by the Langmuir–Blodgett (LB) method from three types of graphene in solution. We demonstrate humidity sensing and respiration monitoring from graphene made by bath sonication, probe sonication, and electrochemical exfoliation. We characterize the morphology and chemical composition of the three film types and compare their performance as sensors. We conclude that although all three types can be used for sensing, they each have their particular advantages and drawbacks.
PB  - MYU K.K.
T2  - Sensors and Materials
T1  - Three Types of Films from Liquid-phase-exfoliated Graphene for Use as Humidity Sensors and Respiration Monitors
VL  - 34
IS  - 11
SP  - 3933
DO  - 10.18494/SAM4092
ER  - 

@article{
author = "Andrić, Stevan and Tomašević-Ilić, Tijana and Rakočević, Lazar and Vasiljević-Radović, Dana and Spasenović, Marko",
year = "2022",
abstract = "Measuring relative humidity is important for a myriad of industries, including production, agriculture, environmental monitoring, and medicine. Thin-film, fast-response sensors are particularly interesting for wearable applications, such as monitoring breathing. We report on humidity sensors made from graphene deposited as a thin film by the Langmuir–Blodgett (LB) method from three types of graphene in solution. We demonstrate humidity sensing and respiration monitoring from graphene made by bath sonication, probe sonication, and electrochemical exfoliation. We characterize the morphology and chemical composition of the three film types and compare their performance as sensors. We conclude that although all three types can be used for sensing, they each have their particular advantages and drawbacks.",
publisher = "MYU K.K.",
journal = "Sensors and Materials",
title = "Three Types of Films from Liquid-phase-exfoliated Graphene for Use as Humidity Sensors and Respiration Monitors",
volume = "34",
number = "11",
pages = "3933",
doi = "10.18494/SAM4092"
}

Andrić, S., Tomašević-Ilić, T., Rakočević, L., Vasiljević-Radović, D.,& Spasenović, M.. (2022). Three Types of Films from Liquid-phase-exfoliated Graphene for Use as Humidity Sensors and Respiration Monitors. in Sensors and Materials
MYU K.K.., 34(11), 3933.
https://doi.org/10.18494/SAM4092

Andrić S, Tomašević-Ilić T, Rakočević L, Vasiljević-Radović D, Spasenović M. Three Types of Films from Liquid-phase-exfoliated Graphene for Use as Humidity Sensors and Respiration Monitors. in Sensors and Materials. 2022;34(11):3933.
doi:10.18494/SAM4092 .

Andrić, Stevan, Tomašević-Ilić, Tijana, Rakočević, Lazar, Vasiljević-Radović, Dana, Spasenović, Marko, "Three Types of Films from Liquid-phase-exfoliated Graphene for Use as Humidity Sensors and Respiration Monitors" in Sensors and Materials, 34, no. 11 (2022):3933,
https://doi.org/10.18494/SAM4092 . .

TY  - JOUR
AU  - Golubović, Jelena
AU  - Rakočević, Lazar
AU  - Vasiljević-Radović, Dana
AU  - Štrbac, Svetlana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5489
AB  - PdPt bimetallic nanoparticles on carbon-based supports functioning as advanced electrode materials have attracted attention due to their low content of noble metals and high catalytic activity for fuel cell reactions. Glassy carbon (GC)-supported Pt and PdPt nanoparticles, as promising catalysts for the oxygen reduction reaction (ORR), were prepared by the electrochemical deposition of Pt and the subsequent spontaneous deposition of Pd. The obtained electrodes were examined using X-ray Photoelectron Spectroscopy (XPS), Atomic Force Microscopy (AFM), and electroanalytical techniques. An XPS analysis of the PdPt/GC with the highest ORR performance revealed that the stoichiometric ratio of Pd: Pt was 1:2, and that both Pt and Pd were partially oxidized. AFM images of PdPt2/GC showed the full coverage of GC with PdPt nanoparticles with sizes from 100–300 nm. The ORR activity of PdPt2/GC in an acid solution approached that of polycrystalline Pt (E1/2 = 0.825 V vs. RHE), while exceeding it in an alkaline solution (E1/2 = 0.841 V vs. RHE). The origin of the improved ORR on PdPt2/GC in an alkaline solution is ascribed to the presence of a higher amount of adsorbed OH species originating from both PtOH and PdOH that facilitated the 4e-reaction pathway.
PB  - Švajcarska : MDPI
T2  - Catalysis
T1  - Improved Oxygen Reduction on GC-Supported Large-Sized Pt Nanoparticles by the Addition of Pd
VL  - 12
IS  - 9
SP  - 968
DO  - 10.3390/catal12090968
ER  - 

@article{
author = "Golubović, Jelena and Rakočević, Lazar and Vasiljević-Radović, Dana and Štrbac, Svetlana",
year = "2022",
abstract = "PdPt bimetallic nanoparticles on carbon-based supports functioning as advanced electrode materials have attracted attention due to their low content of noble metals and high catalytic activity for fuel cell reactions. Glassy carbon (GC)-supported Pt and PdPt nanoparticles, as promising catalysts for the oxygen reduction reaction (ORR), were prepared by the electrochemical deposition of Pt and the subsequent spontaneous deposition of Pd. The obtained electrodes were examined using X-ray Photoelectron Spectroscopy (XPS), Atomic Force Microscopy (AFM), and electroanalytical techniques. An XPS analysis of the PdPt/GC with the highest ORR performance revealed that the stoichiometric ratio of Pd: Pt was 1:2, and that both Pt and Pd were partially oxidized. AFM images of PdPt2/GC showed the full coverage of GC with PdPt nanoparticles with sizes from 100–300 nm. The ORR activity of PdPt2/GC in an acid solution approached that of polycrystalline Pt (E1/2 = 0.825 V vs. RHE), while exceeding it in an alkaline solution (E1/2 = 0.841 V vs. RHE). The origin of the improved ORR on PdPt2/GC in an alkaline solution is ascribed to the presence of a higher amount of adsorbed OH species originating from both PtOH and PdOH that facilitated the 4e-reaction pathway.",
publisher = "Švajcarska : MDPI",
journal = "Catalysis",
title = "Improved Oxygen Reduction on GC-Supported Large-Sized Pt Nanoparticles by the Addition of Pd",
volume = "12",
number = "9",
pages = "968",
doi = "10.3390/catal12090968"
}

Golubović, J., Rakočević, L., Vasiljević-Radović, D.,& Štrbac, S.. (2022). Improved Oxygen Reduction on GC-Supported Large-Sized Pt Nanoparticles by the Addition of Pd. in Catalysis
Švajcarska : MDPI., 12(9), 968.
https://doi.org/10.3390/catal12090968

Golubović J, Rakočević L, Vasiljević-Radović D, Štrbac S. Improved Oxygen Reduction on GC-Supported Large-Sized Pt Nanoparticles by the Addition of Pd. in Catalysis. 2022;12(9):968.
doi:10.3390/catal12090968 .

Golubović, Jelena, Rakočević, Lazar, Vasiljević-Radović, Dana, Štrbac, Svetlana, "Improved Oxygen Reduction on GC-Supported Large-Sized Pt Nanoparticles by the Addition of Pd" in Catalysis, 12, no. 9 (2022):968,
https://doi.org/10.3390/catal12090968 . .

TY  - JOUR
AU  - Golubović, Jelena
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5613
AB  - Pd/GC electrodes were prepared by the electrochemical deposition of palladium on glassy carbon (GC)  using PdSO4 or PdCl2 salts. As-prepared GC-supported Pd nanoparticles were characterized by X-ray  photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). XPS spectra revealed that the  depositing palladium salt anion influences the oxidation state of the deposited Pd, while AFM images  showed its effect on Pd nanoparticle size and coverage. The deposition from the PdCl2 salt solution  resulted in smaller palladium nanoparticles, but much higher GC surface coverage than from PdSO4.  The activity of Pd/GC electrodes towards oxygen reduction was examined in acid and alkaline media  using the rotation-disc electrode. Among the different Pd/GC electrodes, the one prepared using PdCl2 salt with the full Pd coverage has shown the best ORR activity. The ORR occurs through a 4e-series  reaction mechanism like on polycrystalline palladium but exceeds its activity concerning the initial  potential.
PB  - ESG
T2  - International Journal of Electrochemical Science
T1  - The Effect of Sulphate and Chloride Palladium Salt Anions on the Morphology of Electrodeposited Pd Nanoparticles and their Catalytic Activity for Oxygen Reduction in Acid and Alkaline Media
SP  - ArticleID:220943
DO  - 10.20964/2022.09.16
ER  - 

@article{
author = "Golubović, Jelena and Rakočević, Lazar and Štrbac, Svetlana",
year = "2022",
abstract = "Pd/GC electrodes were prepared by the electrochemical deposition of palladium on glassy carbon (GC)  using PdSO4 or PdCl2 salts. As-prepared GC-supported Pd nanoparticles were characterized by X-ray  photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). XPS spectra revealed that the  depositing palladium salt anion influences the oxidation state of the deposited Pd, while AFM images  showed its effect on Pd nanoparticle size and coverage. The deposition from the PdCl2 salt solution  resulted in smaller palladium nanoparticles, but much higher GC surface coverage than from PdSO4.  The activity of Pd/GC electrodes towards oxygen reduction was examined in acid and alkaline media  using the rotation-disc electrode. Among the different Pd/GC electrodes, the one prepared using PdCl2 salt with the full Pd coverage has shown the best ORR activity. The ORR occurs through a 4e-series  reaction mechanism like on polycrystalline palladium but exceeds its activity concerning the initial  potential.",
publisher = "ESG",
journal = "International Journal of Electrochemical Science",
title = "The Effect of Sulphate and Chloride Palladium Salt Anions on the Morphology of Electrodeposited Pd Nanoparticles and their Catalytic Activity for Oxygen Reduction in Acid and Alkaline Media",
pages = "ArticleID:220943",
doi = "10.20964/2022.09.16"
}

Golubović, J., Rakočević, L.,& Štrbac, S.. (2022). The Effect of Sulphate and Chloride Palladium Salt Anions on the Morphology of Electrodeposited Pd Nanoparticles and their Catalytic Activity for Oxygen Reduction in Acid and Alkaline Media. in International Journal of Electrochemical Science
ESG., ArticleID:220943.
https://doi.org/10.20964/2022.09.16

Golubović J, Rakočević L, Štrbac S. The Effect of Sulphate and Chloride Palladium Salt Anions on the Morphology of Electrodeposited Pd Nanoparticles and their Catalytic Activity for Oxygen Reduction in Acid and Alkaline Media. in International Journal of Electrochemical Science. 2022;:ArticleID:220943.
doi:10.20964/2022.09.16 .

Golubović, Jelena, Rakočević, Lazar, Štrbac, Svetlana, "The Effect of Sulphate and Chloride Palladium Salt Anions on the Morphology of Electrodeposited Pd Nanoparticles and their Catalytic Activity for Oxygen Reduction in Acid and Alkaline Media" in International Journal of Electrochemical Science (2022):ArticleID:220943,
https://doi.org/10.20964/2022.09.16 . .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Stojković Simatović, Ivana
AU  - Maksić, Aleksandar
AU  - Rajić, Vladimir
AU  - Štrbac, Svetlana
AU  - Srejić, Irina
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5292
AB  - PtAu nanoparticles spontaneously deposited on graphene support, PtAu/rGO, have shown
remarkably high catalytic activity for hydrogen evolution reaction (HER) in sulfuric acid solution.
SEM images of the PtAu/rGO electrode surface showed that Pt nanoparticles that are non-uniform
in size occupy both the edges of previously deposited uniform Au nanoparticles and the edges of
graphene support. XPS analysis showed that the atomic percentages of Au and Pt in PtAu/rGO were
0.6% and 0.3%, respectively. The atomic percentage of Au alone on previously prepared Au/rGO
was 0.7%. Outstanding HER activity was achieved for the PtAu/rGO electrode, showing the initial
potential close to the equilibrium potential for HER and a low Tafel slope of −38 mV/dec. This
was confirmed by electrochemical impedance spectroscopy. The chronoamperometric measurement
performed for 40 min for hydrogen evolution at a constant potential indicated good stability and
durability of the PtAu/rGO electrode.
T2  - Catalysis
T1  - PtAu Nanoparticles Supported by Reduced Graphene Oxide as a Highly Active Catalyst for Hydrogen Evolution
VL  - 12
IS  - 43
SP  - 2
EP  - 13
DO  - 10.3390/catal12010043
ER  - 

@article{
author = "Rakočević, Lazar and Stojković Simatović, Ivana and Maksić, Aleksandar and Rajić, Vladimir and Štrbac, Svetlana and Srejić, Irina",
year = "2022",
abstract = "PtAu nanoparticles spontaneously deposited on graphene support, PtAu/rGO, have shown
remarkably high catalytic activity for hydrogen evolution reaction (HER) in sulfuric acid solution.
SEM images of the PtAu/rGO electrode surface showed that Pt nanoparticles that are non-uniform
in size occupy both the edges of previously deposited uniform Au nanoparticles and the edges of
graphene support. XPS analysis showed that the atomic percentages of Au and Pt in PtAu/rGO were
0.6% and 0.3%, respectively. The atomic percentage of Au alone on previously prepared Au/rGO
was 0.7%. Outstanding HER activity was achieved for the PtAu/rGO electrode, showing the initial
potential close to the equilibrium potential for HER and a low Tafel slope of −38 mV/dec. This
was confirmed by electrochemical impedance spectroscopy. The chronoamperometric measurement
performed for 40 min for hydrogen evolution at a constant potential indicated good stability and
durability of the PtAu/rGO electrode.",
journal = "Catalysis",
title = "PtAu Nanoparticles Supported by Reduced Graphene Oxide as a Highly Active Catalyst for Hydrogen Evolution",
volume = "12",
number = "43",
pages = "2-13",
doi = "10.3390/catal12010043"
}

Rakočević, L., Stojković Simatović, I., Maksić, A., Rajić, V., Štrbac, S.,& Srejić, I.. (2022). PtAu Nanoparticles Supported by Reduced Graphene Oxide as a Highly Active Catalyst for Hydrogen Evolution. in Catalysis, 12(43), 2-13.
https://doi.org/10.3390/catal12010043

Rakočević L, Stojković Simatović I, Maksić A, Rajić V, Štrbac S, Srejić I. PtAu Nanoparticles Supported by Reduced Graphene Oxide as a Highly Active Catalyst for Hydrogen Evolution. in Catalysis. 2022;12(43):2-13.
doi:10.3390/catal12010043 .

Rakočević, Lazar, Stojković Simatović, Ivana, Maksić, Aleksandar, Rajić, Vladimir, Štrbac, Svetlana, Srejić, Irina, "PtAu Nanoparticles Supported by Reduced Graphene Oxide as a Highly Active Catalyst for Hydrogen Evolution" in Catalysis, 12, no. 43 (2022):2-13,
https://doi.org/10.3390/catal12010043 . .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
AU  - Potočnik, Jelena
AU  - Popović, Maja
AU  - Jugović, Dragana
AU  - Stojković Šimatović, Ivana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4235
AB  - Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 ◦C, while 3-D tunnel structured Na0⋅4MnO2 and Na0⋅44MnO2, both with rod-like morphology, were obtained at 800 ◦C and 900 ◦C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0⋅44MnO2 obtained at 900 ◦C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.
PB  - Elsevier
T2  - Ceramics International
T1  - The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries
VL  - 47
IS  - 4
SP  - 4595
EP  - 4603
DO  - 10.1016/j.ceramint.2020.10.025
ER  - 

@article{
author = "Rakočević, Lazar and Štrbac, Svetlana and Potočnik, Jelena and Popović, Maja and Jugović, Dragana and Stojković Šimatović, Ivana",
year = "2021",
abstract = "Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 ◦C, while 3-D tunnel structured Na0⋅4MnO2 and Na0⋅44MnO2, both with rod-like morphology, were obtained at 800 ◦C and 900 ◦C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0⋅44MnO2 obtained at 900 ◦C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries",
volume = "47",
number = "4",
pages = "4595-4603",
doi = "10.1016/j.ceramint.2020.10.025"
}

Rakočević, L., Štrbac, S., Potočnik, J., Popović, M., Jugović, D.,& Stojković Šimatović, I.. (2021). The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries. in Ceramics International
Elsevier., 47(4), 4595-4603.
https://doi.org/10.1016/j.ceramint.2020.10.025

Rakočević L, Štrbac S, Potočnik J, Popović M, Jugović D, Stojković Šimatović I. The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries. in Ceramics International. 2021;47(4):4595-4603.
doi:10.1016/j.ceramint.2020.10.025 .

Rakočević, Lazar, Štrbac, Svetlana, Potočnik, Jelena, Popović, Maja, Jugović, Dragana, Stojković Šimatović, Ivana, "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries" in Ceramics International, 47, no. 4 (2021):4595-4603,
https://doi.org/10.1016/j.ceramint.2020.10.025 . .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
AU  - Potočnik, Jelena
AU  - Popović, Maja
AU  - Jugović, Dragana
AU  - Stojković Šimatović, Ivana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5542
AB  - Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 ◦C, while 3-D tunnel structured Na0⋅4MnO2 and Na0⋅44MnO2, both with rod-like morphology, were obtained at 800 ◦C and 900 ◦C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0⋅44MnO2 obtained at 900 ◦C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.
PB  - Elsevier
T2  - Ceramics International
T1  - The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries
VL  - 47
IS  - 4
SP  - 4595
EP  - 4603
DO  - 10.1016/j.ceramint.2020.10.025
ER  - 

@article{
author = "Rakočević, Lazar and Štrbac, Svetlana and Potočnik, Jelena and Popović, Maja and Jugović, Dragana and Stojković Šimatović, Ivana",
year = "2021",
abstract = "Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 ◦C, while 3-D tunnel structured Na0⋅4MnO2 and Na0⋅44MnO2, both with rod-like morphology, were obtained at 800 ◦C and 900 ◦C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0⋅44MnO2 obtained at 900 ◦C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries",
volume = "47",
number = "4",
pages = "4595-4603",
doi = "10.1016/j.ceramint.2020.10.025"
}

Rakočević, L., Štrbac, S., Potočnik, J., Popović, M., Jugović, D.,& Stojković Šimatović, I.. (2021). The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries. in Ceramics International
Elsevier., 47(4), 4595-4603.
https://doi.org/10.1016/j.ceramint.2020.10.025

Rakočević L, Štrbac S, Potočnik J, Popović M, Jugović D, Stojković Šimatović I. The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries. in Ceramics International. 2021;47(4):4595-4603.
doi:10.1016/j.ceramint.2020.10.025 .

Rakočević, Lazar, Štrbac, Svetlana, Potočnik, Jelena, Popović, Maja, Jugović, Dragana, Stojković Šimatović, Ivana, "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries" in Ceramics International, 47, no. 4 (2021):4595-4603,
https://doi.org/10.1016/j.ceramint.2020.10.025 . .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Srejić, Irina
AU  - Maksić, Aleksandar
AU  - Golubović, Jelena
AU  - Štrbac, Svetlana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4566
AB  - Hydrogen evolution reaction (HER) was investigated on reduced graphene oxide (rGO)-supported Au and PdAu nanoparticles in acid solution. The graphene spread over glassy carbon (rGO/GC) was used as a support for the spontaneous deposition of Au and Pd. The resulting Au/rGO and PdAu/rGO electrodes were characterized using atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) techniques. Phase AFM images have shown that the edges of the rGO sheets were active sites for the deposition of both Au and Pd. XPS analysis revealed that the atomic percentages of both Au and PdAu nanoparticles were slightly higher than 1%. The activity of the PdAu/rGO electrode for the HER was remarkably high, with the overpotential close to zero. HER activity was stable over a 3 h testing time, with a low Tafel slope of approx. −46 mV/dec achieved after prolonged hydrogen evolution at a constant potential.
PB  - MDPI
T2  - Catalysis
T1  - Hydrogen evolution on reduced graphene oxide-supported PdAu nanoparticles
VL  - 11
IS  - 4
SP  - 481
DO  - 10.3390/catal11040481
ER  - 

@article{
author = "Rakočević, Lazar and Srejić, Irina and Maksić, Aleksandar and Golubović, Jelena and Štrbac, Svetlana",
year = "2021",
abstract = "Hydrogen evolution reaction (HER) was investigated on reduced graphene oxide (rGO)-supported Au and PdAu nanoparticles in acid solution. The graphene spread over glassy carbon (rGO/GC) was used as a support for the spontaneous deposition of Au and Pd. The resulting Au/rGO and PdAu/rGO electrodes were characterized using atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) techniques. Phase AFM images have shown that the edges of the rGO sheets were active sites for the deposition of both Au and Pd. XPS analysis revealed that the atomic percentages of both Au and PdAu nanoparticles were slightly higher than 1%. The activity of the PdAu/rGO electrode for the HER was remarkably high, with the overpotential close to zero. HER activity was stable over a 3 h testing time, with a low Tafel slope of approx. −46 mV/dec achieved after prolonged hydrogen evolution at a constant potential.",
publisher = "MDPI",
journal = "Catalysis",
title = "Hydrogen evolution on reduced graphene oxide-supported PdAu nanoparticles",
volume = "11",
number = "4",
pages = "481",
doi = "10.3390/catal11040481"
}

Rakočević, L., Srejić, I., Maksić, A., Golubović, J.,& Štrbac, S.. (2021). Hydrogen evolution on reduced graphene oxide-supported PdAu nanoparticles. in Catalysis
MDPI., 11(4), 481.
https://doi.org/10.3390/catal11040481

Rakočević L, Srejić I, Maksić A, Golubović J, Štrbac S. Hydrogen evolution on reduced graphene oxide-supported PdAu nanoparticles. in Catalysis. 2021;11(4):481.
doi:10.3390/catal11040481 .

Rakočević, Lazar, Srejić, Irina, Maksić, Aleksandar, Golubović, Jelena, Štrbac, Svetlana, "Hydrogen evolution on reduced graphene oxide-supported PdAu nanoparticles" in Catalysis, 11, no. 4 (2021):481,
https://doi.org/10.3390/catal11040481 . .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
AU  - Srejić, Irina
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4225
AB  - HER was examined on various glassy carbon-supported Au and PdAu electrodes in acid solution. The Au/GC electrodes were obtained after Au was electrodeposited on a GC substrate by holding the potential for various times in 0.5 M H2SO4 solution containing AuCl4− ions. PdAu/GC electrodes were obtained after Pd has been added by a spontaneous deposition on previously prepared Au/GC electrodes. Surface morphology and chemical analysis of Au/GC and PdAu/GC electrodes were performed by atomic force microscopy and X-ray photoemission spectroscopy. Electrochemical characterization was performed by cyclic voltammetry in 0.5 M H2SO4 solution, while the linear sweep voltammetry was used to gain insight into the electrocatalytic activity of these electrodes for HER. 30minPd/10minAu/GC electrode consisting of 48% Pd and 65% Au, with the total coverage of the GC substrate with PdAu islands of 70%, showed the best catalytic activity for HER. A remarkable high activity and stability of this electrode makes it a promising catalyst for HER in acid solution.
PB  - Elsevier
T2  - International Journal of Hydrogen Energy
T1  - Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study
VL  - 46
IS  - 13
SP  - 9052
EP  - 9063
DO  - 10.1016/j.ijhydene.2021.01.001
ER  - 

@article{
author = "Rakočević, Lazar and Štrbac, Svetlana and Srejić, Irina",
year = "2021",
abstract = "HER was examined on various glassy carbon-supported Au and PdAu electrodes in acid solution. The Au/GC electrodes were obtained after Au was electrodeposited on a GC substrate by holding the potential for various times in 0.5 M H2SO4 solution containing AuCl4− ions. PdAu/GC electrodes were obtained after Pd has been added by a spontaneous deposition on previously prepared Au/GC electrodes. Surface morphology and chemical analysis of Au/GC and PdAu/GC electrodes were performed by atomic force microscopy and X-ray photoemission spectroscopy. Electrochemical characterization was performed by cyclic voltammetry in 0.5 M H2SO4 solution, while the linear sweep voltammetry was used to gain insight into the electrocatalytic activity of these electrodes for HER. 30minPd/10minAu/GC electrode consisting of 48% Pd and 65% Au, with the total coverage of the GC substrate with PdAu islands of 70%, showed the best catalytic activity for HER. A remarkable high activity and stability of this electrode makes it a promising catalyst for HER in acid solution.",
publisher = "Elsevier",
journal = "International Journal of Hydrogen Energy",
title = "Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study",
volume = "46",
number = "13",
pages = "9052-9063",
doi = "10.1016/j.ijhydene.2021.01.001"
}

Rakočević, L., Štrbac, S.,& Srejić, I.. (2021). Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study. in International Journal of Hydrogen Energy
Elsevier., 46(13), 9052-9063.
https://doi.org/10.1016/j.ijhydene.2021.01.001

Rakočević L, Štrbac S, Srejić I. Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study. in International Journal of Hydrogen Energy. 2021;46(13):9052-9063.
doi:10.1016/j.ijhydene.2021.01.001 .

Rakočević, Lazar, Štrbac, Svetlana, Srejić, Irina, "Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study" in International Journal of Hydrogen Energy, 46, no. 13 (2021):9052-9063,
https://doi.org/10.1016/j.ijhydene.2021.01.001 . .