TY  - CONF
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Ž.
AU  - Rakočević, Lazar
AU  - Pavlović, Vera P.
AU  - Ammar-Merah, Souad
AU  - Vujančević, Jelena
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16331
AB  - Mixed spinel ferrites MgxNi1-xFe2O4 were synthesized via sol-gel combustion synthesis with citric acid as fuel, followed by calcination at 700 °C for 3 hours. Obtained powders were characterized via X-ray diffraction analysis (XRD), X-ray photoelectron (XPS), FTIR and Raman spectroscopy and FESEM microscopy. Elemental composition was examined via energy dispersive spectroscopy (EDS). Humidity sensing properties were tested by measuring AC impedance in a climactic chamber at 25 °C and in the relative humidity range of 40–90%. Temperature sensing properties were tested by measuring DC resistance at 40% RH in the temperature range 40–90 °C. Synthesized powders were proven to be pure spinel Fd 3m phase with spherical, slightly agglomerated particles. Substitution of Mg with Ni results in structural changes such as a change in inversion parameter and particle agglomeration, which influences sensing properties of the material. Results show that the sensing properties of magnesium ferrite, which is already a well-established NTC sensor, can be improved by incorporating 10% of nickel in the spinel lattice structure. Mg0.9Ni0.1Fe2O4 exhibited higher temperature sensitivity and higher sensitivity towards humidity compared to MgFe2O4, while further substitution of Mg with Ni resulted in the decline of sensing properties, increase in particle size and agglomeration degree.
PB  - University of Novi Sad, Faculty of Technology, Novi Sad, Serbia
C3  - CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, Programme and Book of Abstracts; October 11-14, 2023, Novi Sad, Serbia
T1  - Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7269
ER  - 

@conference{
author = "Dojčinović, Milena and Vasiljević, Zorka Ž. and Rakočević, Lazar and Pavlović, Vera P. and Ammar-Merah, Souad and Vujančević, Jelena and Nikolić, Maria Vesna",
year = "2023",
abstract = "Mixed spinel ferrites MgxNi1-xFe2O4 were synthesized via sol-gel combustion synthesis with citric acid as fuel, followed by calcination at 700 °C for 3 hours. Obtained powders were characterized via X-ray diffraction analysis (XRD), X-ray photoelectron (XPS), FTIR and Raman spectroscopy and FESEM microscopy. Elemental composition was examined via energy dispersive spectroscopy (EDS). Humidity sensing properties were tested by measuring AC impedance in a climactic chamber at 25 °C and in the relative humidity range of 40–90%. Temperature sensing properties were tested by measuring DC resistance at 40% RH in the temperature range 40–90 °C. Synthesized powders were proven to be pure spinel Fd 3m phase with spherical, slightly agglomerated particles. Substitution of Mg with Ni results in structural changes such as a change in inversion parameter and particle agglomeration, which influences sensing properties of the material. Results show that the sensing properties of magnesium ferrite, which is already a well-established NTC sensor, can be improved by incorporating 10% of nickel in the spinel lattice structure. Mg0.9Ni0.1Fe2O4 exhibited higher temperature sensitivity and higher sensitivity towards humidity compared to MgFe2O4, while further substitution of Mg with Ni resulted in the decline of sensing properties, increase in particle size and agglomeration degree.",
publisher = "University of Novi Sad, Faculty of Technology, Novi Sad, Serbia",
journal = "CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, Programme and Book of Abstracts; October 11-14, 2023, Novi Sad, Serbia",
title = "Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7269"
}

Dojčinović, M., Vasiljević, Z. Ž., Rakočević, L., Pavlović, V. P., Ammar-Merah, S., Vujančević, J.,& Nikolić, M. V.. (2023). Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4. in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, Programme and Book of Abstracts; October 11-14, 2023, Novi Sad, Serbia
University of Novi Sad, Faculty of Technology, Novi Sad, Serbia..
https://hdl.handle.net/21.15107/rcub_machinery_7269

Dojčinović M, Vasiljević ZŽ, Rakočević L, Pavlović VP, Ammar-Merah S, Vujančević J, Nikolić MV. Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4. in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, Programme and Book of Abstracts; October 11-14, 2023, Novi Sad, Serbia. 2023;.
https://hdl.handle.net/21.15107/rcub_machinery_7269 .

Dojčinović, Milena, Vasiljević, Zorka Ž., Rakočević, Lazar, Pavlović, Vera P., Ammar-Merah, Souad, Vujančević, Jelena, Nikolić, Maria Vesna, "Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4" in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, Programme and Book of Abstracts; October 11-14, 2023, Novi Sad, Serbia (2023),
https://hdl.handle.net/21.15107/rcub_machinery_7269 .

TY  - JOUR
AU  - Dojčinović, Milena P.
AU  - Vasiljević, Zorka Ž.
AU  - Rakočević, Lazar
AU  - Pavlović, Vera P.
AU  - Ammar-Merah, Souad
AU  - Vujančević, Jelena D.
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14025
AB  - Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C followed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM microscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3¯m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.
PB  - Basel : MDPI AG
T2  - Chemosensors
T1  - Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites
SP  - 34
VL  - 11
IS  - 1
DO  - 10.3390/chemosensors11010034
UR  - https://hdl.handle.net/21.15107/rcub_dais_14025
ER  - 

@article{
author = "Dojčinović, Milena P. and Vasiljević, Zorka Ž. and Rakočević, Lazar and Pavlović, Vera P. and Ammar-Merah, Souad and Vujančević, Jelena D. and Nikolić, Maria Vesna",
year = "2023",
abstract = "Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C followed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM microscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3¯m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.",
publisher = "Basel : MDPI AG",
journal = "Chemosensors",
title = "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites",
pages = "34",
volume = "11",
number = "1",
doi = "10.3390/chemosensors11010034",
url = "https://hdl.handle.net/21.15107/rcub_dais_14025"
}

Dojčinović, M. P., Vasiljević, Z. Ž., Rakočević, L., Pavlović, V. P., Ammar-Merah, S., Vujančević, J. D.,& Nikolić, M. V.. (2023). Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors
Basel : MDPI AG., 11(1), 34.
https://doi.org/10.3390/chemosensors11010034
https://hdl.handle.net/21.15107/rcub_dais_14025

Dojčinović MP, Vasiljević ZŽ, Rakočević L, Pavlović VP, Ammar-Merah S, Vujančević JD, Nikolić MV. Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors. 2023;11(1):34.
doi:10.3390/chemosensors11010034
https://hdl.handle.net/21.15107/rcub_dais_14025 .

Dojčinović, Milena P., Vasiljević, Zorka Ž., Rakočević, Lazar, Pavlović, Vera P., Ammar-Merah, Souad, Vujančević, Jelena D., Nikolić, Maria Vesna, "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites" in Chemosensors, 11, no. 1 (2023):34,
https://doi.org/10.3390/chemosensors11010034 .,
https://hdl.handle.net/21.15107/rcub_dais_14025 .

TY  - JOUR
AU  - Lović, Jelena
AU  - Eraković Pantović, Sanja
AU  - Rakočević, Lazar
AU  - Ignjatović, Nenad
AU  - Dimitrijević, Silvana B.
AU  - Nikolić, Nebojša D.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/13684
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.
T2  - Processes
T1  - A Novel Two-Step Electrochemical Deposition Method for Sn-Pd Electrocatalyst Synthesis for a Potential Application in Direct Ethanol Fuel Cells
SP  - 120
VL  - 11
IS  - 1
DO  - 10.3390/pr11010120
UR  - https://hdl.handle.net/21.15107/rcub_dais_13684
ER  - 

@article{
author = "Lović, Jelena and Eraković Pantović, Sanja and Rakočević, Lazar and Ignjatović, Nenad and Dimitrijević, Silvana B. 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.",
journal = "Processes",
title = "A Novel Two-Step Electrochemical Deposition Method for Sn-Pd Electrocatalyst Synthesis for a Potential Application in Direct Ethanol Fuel Cells",
pages = "120",
volume = "11",
number = "1",
doi = "10.3390/pr11010120",
url = "https://hdl.handle.net/21.15107/rcub_dais_13684"
}

Lović, J., Eraković Pantović, S., Rakočević, L., Ignjatović, N., Dimitrijević, S. B.,& 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, 11(1), 120.
https://doi.org/10.3390/pr11010120
https://hdl.handle.net/21.15107/rcub_dais_13684

Lović J, Eraković Pantović S, Rakočević L, Ignjatović N, Dimitrijević SB, 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
https://hdl.handle.net/21.15107/rcub_dais_13684 .

Lović, Jelena, Eraković Pantović, Sanja, Rakočević, Lazar, Ignjatović, Nenad, Dimitrijević, Silvana B., 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 .,
https://hdl.handle.net/21.15107/rcub_dais_13684 .

TY  - JOUR
AU  - Milićević, Nemanja
AU  - Novaković, Mirjana M.
AU  - Potočnik, Jelena
AU  - Milović, Miloš
AU  - Rakočević, Lazar
AU  - Abazović, Nadica
AU  - Pjević, Dejan J.
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/12946
AB  - Enhanced optical properties of TiO2 thin films can be achieved by doping or coating with metals. Metal-doped TiO2 can reduce electron-hole recombination and increase hydroxyl radical concentration on the surface of TiO2, resulting in increase of the photocatalytic activity. TiO2 and TiO2-Au thin films were obtained by DC magnetron sputtering of Ti target with Ar ions in O2 atmosphere. In the case of Au buffered TiO2 thin films, two different systems were deposited for comparison. Post deposition annealing at 400 °C was carried out in nitrogen atmosphere for 3 h. The structural and optical characteristics of the prepared films were investigated in detail by the combination of high-resolution microscopic and spectroscopic techniques. The photo-degradation rate was measured using Rhodamine B which simulated pollutant. Post deposition annealing resulted in diffusion of Au atoms through the layer as it was revealed by transmission electron microscopy and energy dispersive X-ray spectroscopy. The obtained TiO2 thin films were found to be amorphous after deposition and annealing at 400 °C leads to crystallization of anatase phase. Analysis of the binding energy in the corresponding X-ray photoelectron spectra has confirmed stoichiometry of TiO2 and that concentration of Au on the surface can be controlled by sputtering and annealing conditions, thus changing optical properties by influencing the surface plasmonic nature. All Au doped TiO2 thin films exhibited enhanced wettability and photo-degradation rates when compared to pristine titania films. © 2022 Elsevier B.V.
T2  - Surfaces and Interfaces
T1  - Influencing surface phenomena by Au diffusion in buffered TiO2-Au thin films: Effects of deposition and annealing processing
SP  - 101811
VL  - 30
DO  - 10.1016/j.surfin.2022.101811
UR  - https://hdl.handle.net/21.15107/rcub_dais_12946
ER  - 

@article{
author = "Milićević, Nemanja and Novaković, Mirjana M. and Potočnik, Jelena and Milović, Miloš and Rakočević, Lazar and Abazović, Nadica and Pjević, Dejan J.",
year = "2022",
abstract = "Enhanced optical properties of TiO2 thin films can be achieved by doping or coating with metals. Metal-doped TiO2 can reduce electron-hole recombination and increase hydroxyl radical concentration on the surface of TiO2, resulting in increase of the photocatalytic activity. TiO2 and TiO2-Au thin films were obtained by DC magnetron sputtering of Ti target with Ar ions in O2 atmosphere. In the case of Au buffered TiO2 thin films, two different systems were deposited for comparison. Post deposition annealing at 400 °C was carried out in nitrogen atmosphere for 3 h. The structural and optical characteristics of the prepared films were investigated in detail by the combination of high-resolution microscopic and spectroscopic techniques. The photo-degradation rate was measured using Rhodamine B which simulated pollutant. Post deposition annealing resulted in diffusion of Au atoms through the layer as it was revealed by transmission electron microscopy and energy dispersive X-ray spectroscopy. The obtained TiO2 thin films were found to be amorphous after deposition and annealing at 400 °C leads to crystallization of anatase phase. Analysis of the binding energy in the corresponding X-ray photoelectron spectra has confirmed stoichiometry of TiO2 and that concentration of Au on the surface can be controlled by sputtering and annealing conditions, thus changing optical properties by influencing the surface plasmonic nature. All Au doped TiO2 thin films exhibited enhanced wettability and photo-degradation rates when compared to pristine titania films. © 2022 Elsevier B.V.",
journal = "Surfaces and Interfaces",
title = "Influencing surface phenomena by Au diffusion in buffered TiO2-Au thin films: Effects of deposition and annealing processing",
pages = "101811",
volume = "30",
doi = "10.1016/j.surfin.2022.101811",
url = "https://hdl.handle.net/21.15107/rcub_dais_12946"
}

Milićević, N., Novaković, M. M., Potočnik, J., Milović, M., Rakočević, L., Abazović, N.,& Pjević, D. J.. (2022). Influencing surface phenomena by Au diffusion in buffered TiO2-Au thin films: Effects of deposition and annealing processing. in Surfaces and Interfaces, 30, 101811.
https://doi.org/10.1016/j.surfin.2022.101811
https://hdl.handle.net/21.15107/rcub_dais_12946

Milićević N, Novaković MM, Potočnik J, Milović M, Rakočević L, Abazović N, Pjević DJ. Influencing surface phenomena by Au diffusion in buffered TiO2-Au thin films: Effects of deposition and annealing processing. in Surfaces and Interfaces. 2022;30:101811.
doi:10.1016/j.surfin.2022.101811
https://hdl.handle.net/21.15107/rcub_dais_12946 .

Milićević, Nemanja, Novaković, Mirjana M., Potočnik, Jelena, Milović, Miloš, Rakočević, Lazar, Abazović, Nadica, Pjević, Dejan J., "Influencing surface phenomena by Au diffusion in buffered TiO2-Au thin films: Effects of deposition and annealing processing" in Surfaces and Interfaces, 30 (2022):101811,
https://doi.org/10.1016/j.surfin.2022.101811 .,
https://hdl.handle.net/21.15107/rcub_dais_12946 .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
AU  - Potočnik, Jelena
AU  - Popović, Maja
AU  - Jugović, Dragana
AU  - Stojković Simatović, Ivana
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/10035
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 BV
T2  - Ceramics International
T1  - The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries
SP  - 4595
EP  - 4603
VL  - 47
IS  - 4
DO  - 10.1016/j.ceramint.2020.10.025
UR  - https://hdl.handle.net/21.15107/rcub_dais_10035
ER  - 

@article{
author = "Rakočević, Lazar and Štrbac, Svetlana and Potočnik, Jelena and Popović, Maja and Jugović, Dragana and Stojković Simatović, 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 BV",
journal = "Ceramics International",
title = "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries",
pages = "4595-4603",
volume = "47",
number = "4",
doi = "10.1016/j.ceramint.2020.10.025",
url = "https://hdl.handle.net/21.15107/rcub_dais_10035"
}

Rakočević, L., Štrbac, S., Potočnik, J., Popović, M., Jugović, D.,& Stojković Simatović, 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 BV., 47(4), 4595-4603.
https://doi.org/10.1016/j.ceramint.2020.10.025
https://hdl.handle.net/21.15107/rcub_dais_10035

Rakočević L, Štrbac S, Potočnik J, Popović M, Jugović D, Stojković Simatović 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
https://hdl.handle.net/21.15107/rcub_dais_10035 .

Rakočević, Lazar, Štrbac, Svetlana, Potočnik, Jelena, Popović, Maja, Jugović, Dragana, Stojković Simatović, 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 .,
https://hdl.handle.net/21.15107/rcub_dais_10035 .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
AU  - Potočnik, Jelena
AU  - Popović, Maja
AU  - Jugović, Dragana
AU  - Stojković Simatović, Ivana
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11229
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
SP  - 4595
EP  - 4603
VL  - 47
IS  - 4
DO  - 10.1016/j.ceramint.2020.10.025
UR  - https://hdl.handle.net/21.15107/rcub_dais_11229
ER  - 

@article{
author = "Rakočević, Lazar and Štrbac, Svetlana and Potočnik, Jelena and Popović, Maja and Jugović, Dragana and Stojković Simatović, 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",
pages = "4595-4603",
volume = "47",
number = "4",
doi = "10.1016/j.ceramint.2020.10.025",
url = "https://hdl.handle.net/21.15107/rcub_dais_11229"
}

Rakočević, L., Štrbac, S., Potočnik, J., Popović, M., Jugović, D.,& Stojković Simatović, 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
https://hdl.handle.net/21.15107/rcub_dais_11229

Rakočević L, Štrbac S, Potočnik J, Popović M, Jugović D, Stojković Simatović 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
https://hdl.handle.net/21.15107/rcub_dais_11229 .

Rakočević, Lazar, Štrbac, Svetlana, Potočnik, Jelena, Popović, Maja, Jugović, Dragana, Stojković Simatović, 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 .,
https://hdl.handle.net/21.15107/rcub_dais_11229 .

TY  - CONF
AU  - Rakočević, Lazar
AU  - Potočnik, Jelena
AU  - Novaković, Mirjana
AU  - Jugović, Dragana
AU  - Stojković Simatović, Ivana
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6972
AB  - The lithium-ion batteries are the most commonly used for energy storage in portable devices. Since lithium is relatively rare on earth but rapidly consumed, it is necessary to find an adequate replacement. Owing to the similar chemical properties of sodium and lithium, but much higher availability, sodium ion batteries are one of the best candidates to replace lithium-ion batteries. A variety of materials such as manganese oxide, vanadium oxide or phosphate can be used as an electrode material (anode and cathode) in sodium ion batteries due to the high ability of intercalation of sodium. In this work, NaxMnO2 powder was synthesized by glycine nitrate method. The precursor powder was annealed for four hours at different temperatures: 800, 850, 900 and 950 °C. The characterization of the obtained materials was carried out using following methods: X-ray diffraction (XRD), scanning electron spectroscopy with energy dispersive X-ray spectroscopy (SEM/EDS) and transmission electron spectroscopy with energy dispersive Xray spectroscopy (TEM/EDS). Electrochemical properties were studied using cyclic voltammetry and chronopotentiometry in an aqueous solution of NaNO3. The layer structured Na0.7MnO2.05 with sheet-like morphology and Na0.4MnO2 with 3-D tunnel structure and rod-like morphology was obtained at 800 oC and 900 oC respectively. Na0.44MnO2 with rod-like morphology was annealed at 900 and 950 oC. 3D-tunnel structure Na0.44MnO2 obtained at 900 oC showed the best electrochemical behaviour in aqueous NaNO3 solution.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
T1  - Synthesis temperature influence on the structure, morphology and electrochemical performance of NaxMnO2 as cathode materials for sodium-ion rechearchable batteries
SP  - 59
EP  - 59
UR  - https://hdl.handle.net/21.15107/rcub_dais_6972
ER  - 

@conference{
author = "Rakočević, Lazar and Potočnik, Jelena and Novaković, Mirjana and Jugović, Dragana and Stojković Simatović, Ivana",
year = "2019",
abstract = "The lithium-ion batteries are the most commonly used for energy storage in portable devices. Since lithium is relatively rare on earth but rapidly consumed, it is necessary to find an adequate replacement. Owing to the similar chemical properties of sodium and lithium, but much higher availability, sodium ion batteries are one of the best candidates to replace lithium-ion batteries. A variety of materials such as manganese oxide, vanadium oxide or phosphate can be used as an electrode material (anode and cathode) in sodium ion batteries due to the high ability of intercalation of sodium. In this work, NaxMnO2 powder was synthesized by glycine nitrate method. The precursor powder was annealed for four hours at different temperatures: 800, 850, 900 and 950 °C. The characterization of the obtained materials was carried out using following methods: X-ray diffraction (XRD), scanning electron spectroscopy with energy dispersive X-ray spectroscopy (SEM/EDS) and transmission electron spectroscopy with energy dispersive Xray spectroscopy (TEM/EDS). Electrochemical properties were studied using cyclic voltammetry and chronopotentiometry in an aqueous solution of NaNO3. The layer structured Na0.7MnO2.05 with sheet-like morphology and Na0.4MnO2 with 3-D tunnel structure and rod-like morphology was obtained at 800 oC and 900 oC respectively. Na0.44MnO2 with rod-like morphology was annealed at 900 and 950 oC. 3D-tunnel structure Na0.44MnO2 obtained at 900 oC showed the best electrochemical behaviour in aqueous NaNO3 solution.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia",
title = "Synthesis temperature influence on the structure, morphology and electrochemical performance of NaxMnO2 as cathode materials for sodium-ion rechearchable batteries",
pages = "59-59",
url = "https://hdl.handle.net/21.15107/rcub_dais_6972"
}

Rakočević, L., Potočnik, J., Novaković, M., Jugović, D.,& Stojković Simatović, I.. (2019). Synthesis temperature influence on the structure, morphology and electrochemical performance of NaxMnO2 as cathode materials for sodium-ion rechearchable batteries. in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 59-59.
https://hdl.handle.net/21.15107/rcub_dais_6972

Rakočević L, Potočnik J, Novaković M, Jugović D, Stojković Simatović I. Synthesis temperature influence on the structure, morphology and electrochemical performance of NaxMnO2 as cathode materials for sodium-ion rechearchable batteries. in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia. 2019;:59-59.
https://hdl.handle.net/21.15107/rcub_dais_6972 .

Rakočević, Lazar, Potočnik, Jelena, Novaković, Mirjana, Jugović, Dragana, Stojković Simatović, Ivana, "Synthesis temperature influence on the structure, morphology and electrochemical performance of NaxMnO2 as cathode materials for sodium-ion rechearchable batteries" in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia (2019):59-59,
https://hdl.handle.net/21.15107/rcub_dais_6972 .

TY  - CONF
AU  - Rakočević, Lazar
AU  - Novaković, Mirjana
AU  - Potočnik, Jelena
AU  - Jugović, Dragana
AU  - Stojković Simatović, Ivana
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/4726
AB  - The application of rechargeable batteries is growing significantly and there is a need for developing cheaper batteries with good performances. Sodium-ion batteries could be a viable option due to higher abundance of sodium against lithium mineral resources, its low price and similar principles intercalate Na+ ions as Li+ ions in lithium-ion batteries. Different materials as manganese oxides and vanadium oxide are used as electrode materials in sodium batteries. Na0.44MnO2 was regarded as one of the most promising cathode materials for sodium-ion batteries due to its high specific capacity and good cyclability. In this work, Na0.4MnO2 was synthesized using glycine-nitrate method (GNM). The structure of synthesized powder was characterized by X-Ray Diffraction (XRD), while the particles morphology was examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The elemental mapping was performed by energy-dispersive Xray spectroscopy (EDS). XRD results showed that the phase structure of Na0.4MnO2 was orthorhombic with tunnel structure. TEM and SEM micrographs of obtained powder material showed uniformed rod-like shape particles with the average lengths and widths of 300 nm and 80 nm, respectively and EDS analysis confirmed that the sample contains Na, Mn, and O in an appropriate ration. The electrochemical behavior of Na0.4MnO2 was investigated by cyclic voltammetry (CV) in a saturated aqueous solution of NaNO3 at scan rates from 20 to 400 mV•s-1. The initial discharge capacity of Na0.4MnO2 in NaNO3 solution was 50 mA•h•g- 1, while after 15 cycles its value increased for 9%. while the efficiency (the ratio of the capacity charge and discharge) was amounting to ~ 95%. This indicates that material synthesized by GNM can be used as cathode material in aqueous sodium-ion batteries
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia
T1  - Synthesis and characterization of Na0.4MnO2 as cathode material for aqueous sodium-ion batteries
SP  - 48
EP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_dais_4726
ER  - 

@conference{
author = "Rakočević, Lazar and Novaković, Mirjana and Potočnik, Jelena and Jugović, Dragana and Stojković Simatović, Ivana",
year = "2018",
abstract = "The application of rechargeable batteries is growing significantly and there is a need for developing cheaper batteries with good performances. Sodium-ion batteries could be a viable option due to higher abundance of sodium against lithium mineral resources, its low price and similar principles intercalate Na+ ions as Li+ ions in lithium-ion batteries. Different materials as manganese oxides and vanadium oxide are used as electrode materials in sodium batteries. Na0.44MnO2 was regarded as one of the most promising cathode materials for sodium-ion batteries due to its high specific capacity and good cyclability. In this work, Na0.4MnO2 was synthesized using glycine-nitrate method (GNM). The structure of synthesized powder was characterized by X-Ray Diffraction (XRD), while the particles morphology was examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The elemental mapping was performed by energy-dispersive Xray spectroscopy (EDS). XRD results showed that the phase structure of Na0.4MnO2 was orthorhombic with tunnel structure. TEM and SEM micrographs of obtained powder material showed uniformed rod-like shape particles with the average lengths and widths of 300 nm and 80 nm, respectively and EDS analysis confirmed that the sample contains Na, Mn, and O in an appropriate ration. The electrochemical behavior of Na0.4MnO2 was investigated by cyclic voltammetry (CV) in a saturated aqueous solution of NaNO3 at scan rates from 20 to 400 mV•s-1. The initial discharge capacity of Na0.4MnO2 in NaNO3 solution was 50 mA•h•g- 1, while after 15 cycles its value increased for 9%. while the efficiency (the ratio of the capacity charge and discharge) was amounting to ~ 95%. This indicates that material synthesized by GNM can be used as cathode material in aqueous sodium-ion batteries",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia",
title = "Synthesis and characterization of Na0.4MnO2 as cathode material for aqueous sodium-ion batteries",
pages = "48-48",
url = "https://hdl.handle.net/21.15107/rcub_dais_4726"
}

Rakočević, L., Novaković, M., Potočnik, J., Jugović, D.,& Stojković Simatović, I.. (2018). Synthesis and characterization of Na0.4MnO2 as cathode material for aqueous sodium-ion batteries. in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 48-48.
https://hdl.handle.net/21.15107/rcub_dais_4726

Rakočević L, Novaković M, Potočnik J, Jugović D, Stojković Simatović I. Synthesis and characterization of Na0.4MnO2 as cathode material for aqueous sodium-ion batteries. in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia. 2018;:48-48.
https://hdl.handle.net/21.15107/rcub_dais_4726 .

Rakočević, Lazar, Novaković, Mirjana, Potočnik, Jelena, Jugović, Dragana, Stojković Simatović, Ivana, "Synthesis and characterization of Na0.4MnO2 as cathode material for aqueous sodium-ion batteries" in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia (2018):48-48,
https://hdl.handle.net/21.15107/rcub_dais_4726 .

TY  - CONF
AU  - Rakočević, Lazar
AU  - Novaković, Mirjana
AU  - Potočnik, Jelena
AU  - Jugović, Dragana
AU  - Stojković Simatović, Ivana
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/3628
AB  - Due to the increasing use of batteries in everyday life and in industry, there is a need for developing cheaper batteries than the widely used lithium ion batteries. Lower price and higher abundance of sodium compared to lithium mineral resources intensified the development of Na-ion batteries. Aqueous lithium/ sodium rechargeable batteries have attracted considerable attention for energy storage because they do not contain flammable organic electrolytes as commercial batteries do, the ionic conductivity of the aqueous electrolyte is about two orders of magnitude higher than in non-aqueous electrolyte and the electrolyte salt and solvent are cheaper. Various materials such as manganese oxides, vanadium oxide and phosphates have been used as electrode materials (cathodic and anodic) in sodium batteries due to high sodium intercalation ability in both, organic and aqueous electrolytes. The most frequently used type of manganese oxides are Li–Mn–O or Na–Mn–O systems due to their tunnel or layered crystal structures which facilitate the lithium/sodium intercalation-deintercalation. In this work, a glycine-nitrate method (GNM) was applied for the synthesis of cathode material Na0.4MnO2.
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - Synthesis and Characterization of Na0.4MnO2 as a Positive Electrode Material for an Aqueous Electrolyte Sodium-ion Energy Storage Device
SP  - 154
EP  - 156
UR  - https://hdl.handle.net/21.15107/rcub_dais_3628
ER  - 

@conference{
author = "Rakočević, Lazar and Novaković, Mirjana and Potočnik, Jelena and Jugović, Dragana and Stojković Simatović, Ivana",
year = "2018",
abstract = "Due to the increasing use of batteries in everyday life and in industry, there is a need for developing cheaper batteries than the widely used lithium ion batteries. Lower price and higher abundance of sodium compared to lithium mineral resources intensified the development of Na-ion batteries. Aqueous lithium/ sodium rechargeable batteries have attracted considerable attention for energy storage because they do not contain flammable organic electrolytes as commercial batteries do, the ionic conductivity of the aqueous electrolyte is about two orders of magnitude higher than in non-aqueous electrolyte and the electrolyte salt and solvent are cheaper. Various materials such as manganese oxides, vanadium oxide and phosphates have been used as electrode materials (cathodic and anodic) in sodium batteries due to high sodium intercalation ability in both, organic and aqueous electrolytes. The most frequently used type of manganese oxides are Li–Mn–O or Na–Mn–O systems due to their tunnel or layered crystal structures which facilitate the lithium/sodium intercalation-deintercalation. In this work, a glycine-nitrate method (GNM) was applied for the synthesis of cathode material Na0.4MnO2.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "Synthesis and Characterization of Na0.4MnO2 as a Positive Electrode Material for an Aqueous Electrolyte Sodium-ion Energy Storage Device",
pages = "154-156",
url = "https://hdl.handle.net/21.15107/rcub_dais_3628"
}

Rakočević, L., Novaković, M., Potočnik, J., Jugović, D.,& Stojković Simatović, I.. (2018). Synthesis and Characterization of Na0.4MnO2 as a Positive Electrode Material for an Aqueous Electrolyte Sodium-ion Energy Storage Device. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
Belgrade : Serbian Academy of Sciences and Arts., 154-156.
https://hdl.handle.net/21.15107/rcub_dais_3628

Rakočević L, Novaković M, Potočnik J, Jugović D, Stojković Simatović I. Synthesis and Characterization of Na0.4MnO2 as a Positive Electrode Material for an Aqueous Electrolyte Sodium-ion Energy Storage Device. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:154-156.
https://hdl.handle.net/21.15107/rcub_dais_3628 .

Rakočević, Lazar, Novaković, Mirjana, Potočnik, Jelena, Jugović, Dragana, Stojković Simatović, Ivana, "Synthesis and Characterization of Na0.4MnO2 as a Positive Electrode Material for an Aqueous Electrolyte Sodium-ion Energy Storage Device" in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia (2018):154-156,
https://hdl.handle.net/21.15107/rcub_dais_3628 .