TY  - JOUR
AU  - Popović, Maja
AU  - Novaković, Mirjana
AU  - Vaňa, Dušan
AU  - Ronning, Carsten
AU  - Jugović, Dragana
AU  - Rajić, Vladimir
AU  - Noga, Pavol
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14289
AB  - Titanium nitride (TiN) is an attractive alternative for modern and future photonic applications, as its optical properties can be engineered over a wide spectral range. In this study, we have used sequential implantation of gold and silver ions with varying ion fluence, as well as subsequent annealing, in order to modify the optical and plasmonic properties of TiN thin films and correlated this to their structural properties. Our investigations show that the columnar structure of the TiN films is partially destroyed upon implantation, but metallic Au and Ag nanoparticles are formed. The irradiation further induces a reduction of the lattice constant as well as changes the TiN stoichiometry and grain size. From the optical point of view, the implanted films possess less metallicity with increasing Ag fluence and losses several times lower than the as-deposited film, which can be correlated with the deficiency of nitrogen and additional defects. Subsequent annealing partially recovered the destroyed columnar structure, and the films become more metallic where the optical losses are much smaller in comparison to the as-implanted situation, being comparable to those of pure Au and Ag. In this way, by varying the implantation fluence of silver ions properly while keeping the gold fluence constant, we were able to optimize experimental parameters in such a way to ensure the formation of TiN with desirable optical performances.
PB  - Elsevier BV
T2  - Optical Materials
T1  - Structure-dependent optical properties of Au/Ag irradiated TiN thin films
SP  - 113684
VL  - 138
DO  - 10.1016/j.optmat.2023.113684
UR  - https://hdl.handle.net/21.15107/rcub_dais_14289
ER  - 

@article{
author = "Popović, Maja and Novaković, Mirjana and Vaňa, Dušan and Ronning, Carsten and Jugović, Dragana and Rajić, Vladimir and Noga, Pavol",
year = "2023",
abstract = "Titanium nitride (TiN) is an attractive alternative for modern and future photonic applications, as its optical properties can be engineered over a wide spectral range. In this study, we have used sequential implantation of gold and silver ions with varying ion fluence, as well as subsequent annealing, in order to modify the optical and plasmonic properties of TiN thin films and correlated this to their structural properties. Our investigations show that the columnar structure of the TiN films is partially destroyed upon implantation, but metallic Au and Ag nanoparticles are formed. The irradiation further induces a reduction of the lattice constant as well as changes the TiN stoichiometry and grain size. From the optical point of view, the implanted films possess less metallicity with increasing Ag fluence and losses several times lower than the as-deposited film, which can be correlated with the deficiency of nitrogen and additional defects. Subsequent annealing partially recovered the destroyed columnar structure, and the films become more metallic where the optical losses are much smaller in comparison to the as-implanted situation, being comparable to those of pure Au and Ag. In this way, by varying the implantation fluence of silver ions properly while keeping the gold fluence constant, we were able to optimize experimental parameters in such a way to ensure the formation of TiN with desirable optical performances.",
publisher = "Elsevier BV",
journal = "Optical Materials",
title = "Structure-dependent optical properties of Au/Ag irradiated TiN thin films",
pages = "113684",
volume = "138",
doi = "10.1016/j.optmat.2023.113684",
url = "https://hdl.handle.net/21.15107/rcub_dais_14289"
}

Popović, M., Novaković, M., Vaňa, D., Ronning, C., Jugović, D., Rajić, V.,& Noga, P.. (2023). Structure-dependent optical properties of Au/Ag irradiated TiN thin films. in Optical Materials
Elsevier BV., 138, 113684.
https://doi.org/10.1016/j.optmat.2023.113684
https://hdl.handle.net/21.15107/rcub_dais_14289

Popović M, Novaković M, Vaňa D, Ronning C, Jugović D, Rajić V, Noga P. Structure-dependent optical properties of Au/Ag irradiated TiN thin films. in Optical Materials. 2023;138:113684.
doi:10.1016/j.optmat.2023.113684
https://hdl.handle.net/21.15107/rcub_dais_14289 .

Popović, Maja, Novaković, Mirjana, Vaňa, Dušan, Ronning, Carsten, Jugović, Dragana, Rajić, Vladimir, Noga, Pavol, "Structure-dependent optical properties of Au/Ag irradiated TiN thin films" in Optical Materials, 138 (2023):113684,
https://doi.org/10.1016/j.optmat.2023.113684 .,
https://hdl.handle.net/21.15107/rcub_dais_14289 .

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  - JOUR
AU  - Rajić, Vladimir
AU  - Stojković Simatović, Ivana
AU  - Veselinović, Ljiljana
AU  - Belošević Čavor, Jelena
AU  - Novaković, Mirjana
AU  - Popović, Maja
AU  - Škapin, Srečo Davor
AU  - Mojović, Miloš
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Janković Častvan, Ivona
AU  - Marković, Smilja
PY  - 2020
UR  - https://pubs.rsc.org/en/content/articlelanding/2020/cp/d0cp03377d
UR  - https://dais.sanu.ac.rs/123456789/9543
AB  - Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.
PB  - Royal Society of Chemistry
T2  - Physical Chemistry Chemical Physics
T1  - Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry
SP  - 22078
EP  - 22095
VL  - 22
IS  - 38
DO  - 10.1039/D0CP03377D
UR  - https://hdl.handle.net/21.15107/rcub_dais_9543
ER  - 

@article{
author = "Rajić, Vladimir and Stojković Simatović, Ivana and Veselinović, Ljiljana and Belošević Čavor, Jelena and Novaković, Mirjana and Popović, Maja and Škapin, Srečo Davor and Mojović, Miloš and Stojadinović, Stevan and Rac, Vladislav and Janković Častvan, Ivona and Marković, Smilja",
year = "2020",
abstract = "Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.",
publisher = "Royal Society of Chemistry",
journal = "Physical Chemistry Chemical Physics",
title = "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry",
pages = "22078-22095",
volume = "22",
number = "38",
doi = "10.1039/D0CP03377D",
url = "https://hdl.handle.net/21.15107/rcub_dais_9543"
}

Rajić, V., Stojković Simatović, I., Veselinović, L., Belošević Čavor, J., Novaković, M., Popović, M., Škapin, S. D., Mojović, M., Stojadinović, S., Rac, V., Janković Častvan, I.,& Marković, S.. (2020). Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry. in Physical Chemistry Chemical Physics
Royal Society of Chemistry., 22(38), 22078-22095.
https://doi.org/10.1039/D0CP03377D
https://hdl.handle.net/21.15107/rcub_dais_9543

Rajić V, Stojković Simatović I, Veselinović L, Belošević Čavor J, Novaković M, Popović M, Škapin SD, Mojović M, Stojadinović S, Rac V, Janković Častvan I, Marković S. Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry. in Physical Chemistry Chemical Physics. 2020;22(38):22078-22095.
doi:10.1039/D0CP03377D
https://hdl.handle.net/21.15107/rcub_dais_9543 .

Rajić, Vladimir, Stojković Simatović, Ivana, Veselinović, Ljiljana, Belošević Čavor, Jelena, Novaković, Mirjana, Popović, Maja, Škapin, Srečo Davor, Mojović, Miloš, Stojadinović, Stevan, Rac, Vladislav, Janković Častvan, Ivona, Marković, Smilja, "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry" in Physical Chemistry Chemical Physics, 22, no. 38 (2020):22078-22095,
https://doi.org/10.1039/D0CP03377D .,
https://hdl.handle.net/21.15107/rcub_dais_9543 .

TY  - JOUR
AU  - Rajić, Vladimir
AU  - Stojković Simatović, Ivana
AU  - Veselinović, Ljiljana
AU  - Belošević Čavor, Jelena
AU  - Novaković, Mirjana
AU  - Popović, Maja
AU  - Škapin, Srečo Davor
AU  - Mojović, Miloš
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Janković Častvan, Ivona
AU  - Marković, Smilja
PY  - 2020
UR  - https://pubs.rsc.org/en/content/articlelanding/2020/cp/d0cp03377d
UR  - https://dais.sanu.ac.rs/123456789/9544
AB  - Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.
PB  - Royal Society of Chemistry
T2  - Physical Chemistry Chemical Physics
T1  - Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry
SP  - 22078
EP  - 22095
VL  - 22
IS  - 38
DO  - 10.1039/D0CP03377D
UR  - https://hdl.handle.net/21.15107/rcub_dais_9544
ER  - 

@article{
author = "Rajić, Vladimir and Stojković Simatović, Ivana and Veselinović, Ljiljana and Belošević Čavor, Jelena and Novaković, Mirjana and Popović, Maja and Škapin, Srečo Davor and Mojović, Miloš and Stojadinović, Stevan and Rac, Vladislav and Janković Častvan, Ivona and Marković, Smilja",
year = "2020",
abstract = "Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.",
publisher = "Royal Society of Chemistry",
journal = "Physical Chemistry Chemical Physics",
title = "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry",
pages = "22078-22095",
volume = "22",
number = "38",
doi = "10.1039/D0CP03377D",
url = "https://hdl.handle.net/21.15107/rcub_dais_9544"
}

Rajić, V., Stojković Simatović, I., Veselinović, L., Belošević Čavor, J., Novaković, M., Popović, M., Škapin, S. D., Mojović, M., Stojadinović, S., Rac, V., Janković Častvan, I.,& Marković, S.. (2020). Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry. in Physical Chemistry Chemical Physics
Royal Society of Chemistry., 22(38), 22078-22095.
https://doi.org/10.1039/D0CP03377D
https://hdl.handle.net/21.15107/rcub_dais_9544

Rajić V, Stojković Simatović I, Veselinović L, Belošević Čavor J, Novaković M, Popović M, Škapin SD, Mojović M, Stojadinović S, Rac V, Janković Častvan I, Marković S. Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry. in Physical Chemistry Chemical Physics. 2020;22(38):22078-22095.
doi:10.1039/D0CP03377D
https://hdl.handle.net/21.15107/rcub_dais_9544 .

Rajić, Vladimir, Stojković Simatović, Ivana, Veselinović, Ljiljana, Belošević Čavor, Jelena, Novaković, Mirjana, Popović, Maja, Škapin, Srečo Davor, Mojović, Miloš, Stojadinović, Stevan, Rac, Vladislav, Janković Častvan, Ivona, Marković, Smilja, "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry" in Physical Chemistry Chemical Physics, 22, no. 38 (2020):22078-22095,
https://doi.org/10.1039/D0CP03377D .,
https://hdl.handle.net/21.15107/rcub_dais_9544 .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Popović, Maja
AU  - Rakočević, Zlatko
AU  - Horváth, Endre
AU  - Kollár, Márton
AU  - Náfrádi, Bálint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forró, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/5084
AB  - Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019
PB  - Elsevier
T2  - Ceramics International
T1  - Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping
SP  - 10013
EP  - 10020
VL  - 45
IS  - 8
DO  - 10.1016/j.ceramint.2019.02.045
UR  - https://hdl.handle.net/21.15107/rcub_dais_5084
ER  - 

@article{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Anđelika and Đokić, Veljko and Popović, Maja and Rakočević, Zlatko and Horváth, Endre and Kollár, Márton and Náfrádi, Bálint and Schiller, Andreas and Domanski, Konrad and Forró, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe",
year = "2019",
abstract = "Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping",
pages = "10013-10020",
volume = "45",
number = "8",
doi = "10.1016/j.ceramint.2019.02.045",
url = "https://hdl.handle.net/21.15107/rcub_dais_5084"
}

Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V. P.,& Janaćković, Đ.. (2019). Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International
Elsevier., 45(8), 10013-10020.
https://doi.org/10.1016/j.ceramint.2019.02.045
https://hdl.handle.net/21.15107/rcub_dais_5084

Vujančević J, Andričević P, Bjelajac A, Đokić V, Popović M, Rakočević Z, Horváth E, Kollár M, Náfrádi B, Schiller A, Domanski K, Forró L, Pavlović VP, Janaćković Đ. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International. 2019;45(8):10013-10020.
doi:10.1016/j.ceramint.2019.02.045
https://hdl.handle.net/21.15107/rcub_dais_5084 .

Vujančević, Jelena, Andričević, Pavao, Bjelajac, Anđelika, Đokić, Veljko, Popović, Maja, Rakočević, Zlatko, Horváth, Endre, Kollár, Márton, Náfrádi, Bálint, Schiller, Andreas, Domanski, Konrad, Forró, Laszlo, Pavlović, Vera P., Janaćković, Đorđe, "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping" in Ceramics International, 45, no. 8 (2019):10013-10020,
https://doi.org/10.1016/j.ceramint.2019.02.045 .,
https://hdl.handle.net/21.15107/rcub_dais_5084 .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Popović, Maja
AU  - Rakočević, Zlatko
AU  - Horváth, Endre
AU  - Kollár, Márton
AU  - Náfrádi, Bálint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forró, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/5765
AB  - Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019
PB  - Elsevier
T2  - Ceramics International
T1  - Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping
SP  - 10013
EP  - 10020
VL  - 45
IS  - 8
DO  - 10.1016/j.ceramint.2019.02.045
UR  - https://hdl.handle.net/21.15107/rcub_dais_5765
ER  - 

@article{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Anđelika and Đokić, Veljko and Popović, Maja and Rakočević, Zlatko and Horváth, Endre and Kollár, Márton and Náfrádi, Bálint and Schiller, Andreas and Domanski, Konrad and Forró, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe",
year = "2019",
abstract = "Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping",
pages = "10013-10020",
volume = "45",
number = "8",
doi = "10.1016/j.ceramint.2019.02.045",
url = "https://hdl.handle.net/21.15107/rcub_dais_5765"
}

Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V. P.,& Janaćković, Đ.. (2019). Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International
Elsevier., 45(8), 10013-10020.
https://doi.org/10.1016/j.ceramint.2019.02.045
https://hdl.handle.net/21.15107/rcub_dais_5765

Vujančević J, Andričević P, Bjelajac A, Đokić V, Popović M, Rakočević Z, Horváth E, Kollár M, Náfrádi B, Schiller A, Domanski K, Forró L, Pavlović VP, Janaćković Đ. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International. 2019;45(8):10013-10020.
doi:10.1016/j.ceramint.2019.02.045
https://hdl.handle.net/21.15107/rcub_dais_5765 .

Vujančević, Jelena, Andričević, Pavao, Bjelajac, Anđelika, Đokić, Veljko, Popović, Maja, Rakočević, Zlatko, Horváth, Endre, Kollár, Márton, Náfrádi, Bálint, Schiller, Andreas, Domanski, Konrad, Forró, Laszlo, Pavlović, Vera P., Janaćković, Đorđe, "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping" in Ceramics International, 45, no. 8 (2019):10013-10020,
https://doi.org/10.1016/j.ceramint.2019.02.045 .,
https://hdl.handle.net/21.15107/rcub_dais_5765 .

TY  - DATA
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Popović, Maja
AU  - Rakočević, Zlatko
AU  - Horváth, Endre
AU  - Kollár, Márton
AU  - Náfrádi, Bálint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forró, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/5969
AB  - Table S1. Reported methods for nitrogen doping of anodized TiO2 nanotube arrays; Figure S1. SEM images and statistical distributions of outer diameters obtained by analyzing SEM micrographs of 100 nanotubes; Table S2. Average morphology parameters for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Table S3. Average crystals size for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Figure S2. Deconvoluted XPS spectra of N 1s core level of Ti foil (black line-experimental, grey line-background, magenta line-envelope); Table S4. Peak positions and atomic percentages of N1s core levels for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Table S5. Positions and atomic percentages of Ti 2p3/2 and O1s core peaks for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Figure S3. The time evolution of the current during the preconditioning of the TiO2/perovskite sample at a bias voltage of 100 V for 75 sec. Dashed line is the logarithmic fit of the base line of the current time evolution; Figure S4. Ideality factor for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples
T2  - Ceramics International
T1  - Supporting information for the article: Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V., Janaćković, Đ., 2019. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International 45, 10013–10020. https://doi.org/10.1016/j.ceramint.2019.02.045
UR  - https://hdl.handle.net/21.15107/rcub_dais_5969
ER  - 

@misc{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Anđelika and Đokić, Veljko and Popović, Maja and Rakočević, Zlatko and Horváth, Endre and Kollár, Márton and Náfrádi, Bálint and Schiller, Andreas and Domanski, Konrad and Forró, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe",
year = "2019",
abstract = "Table S1. Reported methods for nitrogen doping of anodized TiO2 nanotube arrays; Figure S1. SEM images and statistical distributions of outer diameters obtained by analyzing SEM micrographs of 100 nanotubes; Table S2. Average morphology parameters for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Table S3. Average crystals size for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Figure S2. Deconvoluted XPS spectra of N 1s core level of Ti foil (black line-experimental, grey line-background, magenta line-envelope); Table S4. Peak positions and atomic percentages of N1s core levels for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Table S5. Positions and atomic percentages of Ti 2p3/2 and O1s core peaks for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Figure S3. The time evolution of the current during the preconditioning of the TiO2/perovskite sample at a bias voltage of 100 V for 75 sec. Dashed line is the logarithmic fit of the base line of the current time evolution; Figure S4. Ideality factor for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples",
journal = "Ceramics International",
title = "Supporting information for the article: Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V., Janaćković, Đ., 2019. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International 45, 10013–10020. https://doi.org/10.1016/j.ceramint.2019.02.045",
url = "https://hdl.handle.net/21.15107/rcub_dais_5969"
}

Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V. P.,& Janaćković, Đ.. (2019). Supporting information for the article: Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V., Janaćković, Đ., 2019. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International 45, 10013–10020. https://doi.org/10.1016/j.ceramint.2019.02.045. in Ceramics International.
https://hdl.handle.net/21.15107/rcub_dais_5969

Vujančević J, Andričević P, Bjelajac A, Đokić V, Popović M, Rakočević Z, Horváth E, Kollár M, Náfrádi B, Schiller A, Domanski K, Forró L, Pavlović VP, Janaćković Đ. Supporting information for the article: Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V., Janaćković, Đ., 2019. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International 45, 10013–10020. https://doi.org/10.1016/j.ceramint.2019.02.045. in Ceramics International. 2019;.
https://hdl.handle.net/21.15107/rcub_dais_5969 .

Vujančević, Jelena, Andričević, Pavao, Bjelajac, Anđelika, Đokić, Veljko, Popović, Maja, Rakočević, Zlatko, Horváth, Endre, Kollár, Márton, Náfrádi, Bálint, Schiller, Andreas, Domanski, Konrad, Forró, Laszlo, Pavlović, Vera P., Janaćković, Đorđe, "Supporting information for the article: Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V., Janaćković, Đ., 2019. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International 45, 10013–10020. https://doi.org/10.1016/j.ceramint.2019.02.045" in Ceramics International (2019),
https://hdl.handle.net/21.15107/rcub_dais_5969 .

TY  - DATA
AU  - Jugović, Dragana
AU  - Milović, Miloš
AU  - Popović, Maja
AU  - Kusigerski, Vladan
AU  - Škapin, Srečo Davor
AU  - Rakočević, Zlatko
AU  - Mitrić, Miodrag
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/5970
AB  - Figure S1. The evolution of FTIR spectra during the synthesis of pristine NaxCoO2; Figure S2. X-ray diffractograms taken at different stages of a solid-state reaction between Na2CO3, Co3O4, and NaF. The patterns at the bottom are taken from ICDD PDF database as reference patterns for phase identification
T2  - Journal of Alloys and Compounds
T1  - Supplementary information for the article: Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S., Rakočević, Z., Mitrić, M., 2019. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. Journal of Alloys and Compounds 774, 30–37. https://doi.org/10.1016/j.jallcom.2018.09.372
UR  - https://hdl.handle.net/21.15107/rcub_dais_5970
ER  - 

@misc{
author = "Jugović, Dragana and Milović, Miloš and Popović, Maja and Kusigerski, Vladan and Škapin, Srečo Davor and Rakočević, Zlatko and Mitrić, Miodrag",
year = "2019",
abstract = "Figure S1. The evolution of FTIR spectra during the synthesis of pristine NaxCoO2; Figure S2. X-ray diffractograms taken at different stages of a solid-state reaction between Na2CO3, Co3O4, and NaF. The patterns at the bottom are taken from ICDD PDF database as reference patterns for phase identification",
journal = "Journal of Alloys and Compounds",
title = "Supplementary information for the article: Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S., Rakočević, Z., Mitrić, M., 2019. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. Journal of Alloys and Compounds 774, 30–37. https://doi.org/10.1016/j.jallcom.2018.09.372",
url = "https://hdl.handle.net/21.15107/rcub_dais_5970"
}

Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S. D., Rakočević, Z.,& Mitrić, M.. (2019). Supplementary information for the article: Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S., Rakočević, Z., Mitrić, M., 2019. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. Journal of Alloys and Compounds 774, 30–37. https://doi.org/10.1016/j.jallcom.2018.09.372. in Journal of Alloys and Compounds.
https://hdl.handle.net/21.15107/rcub_dais_5970

Jugović D, Milović M, Popović M, Kusigerski V, Škapin SD, Rakočević Z, Mitrić M. Supplementary information for the article: Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S., Rakočević, Z., Mitrić, M., 2019. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. Journal of Alloys and Compounds 774, 30–37. https://doi.org/10.1016/j.jallcom.2018.09.372. in Journal of Alloys and Compounds. 2019;.
https://hdl.handle.net/21.15107/rcub_dais_5970 .

Jugović, Dragana, Milović, Miloš, Popović, Maja, Kusigerski, Vladan, Škapin, Srečo Davor, Rakočević, Zlatko, Mitrić, Miodrag, "Supplementary information for the article: Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S., Rakočević, Z., Mitrić, M., 2019. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. Journal of Alloys and Compounds 774, 30–37. https://doi.org/10.1016/j.jallcom.2018.09.372" in Journal of Alloys and Compounds (2019),
https://hdl.handle.net/21.15107/rcub_dais_5970 .

TY  - JOUR
AU  - Jugović, Dragana
AU  - Milović, Miloš
AU  - Popović, Maja
AU  - Kusigerski, Vladan
AU  - Škapin, Srečo Davor
AU  - Rakočević, Zlatko
AU  - Mitrić, Miodrag
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0925838818336375
UR  - https://dais.sanu.ac.rs/123456789/3980
AB  - The main goal of this research has been to investigate for the first time the effects of fluorination on the crystal structure, magnetic, and electrochemical properties of the P2-type NaxCoO2 powder. Sodium cobalt oxide with a P2-type structure is synthesized by a modified solid-state reaction consisting of alternating processes of rapid heating up to 750 °C and rapid cooling to the room temperature. The obtained powder is fluorinated using a gas-solid reaction with NH4HF2 as fluorinating agent. Fluorination causes a decrease of sodium content in the parent phase with the concurrent formation of the minor phases of Na2CO3 and NaF. The structure of NaxCoO2 in both powders is refined in P63/mmc space group. The results of the Rietveld refinement combined with the findings from the XPS measurements confirm the Na0.76CoO2 and Na0.44CoO1.96F0.04 stoichiometries for the pristine and fluorinated powders, respectively, which indicates that 4 at.% of fluorine ions per formula unit are incorporated in the structure. Preliminary electrochemical investigations have revealed an improved charge/discharge performance. The influence of fluorination on morphology and magnetic properties has also been examined.
T2  - Journal of Alloys and Compounds
T1  - Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder
SP  - 30
EP  - 37
VL  - 774
DO  - 10.1016/j.jallcom.2018.09.372
UR  - https://hdl.handle.net/21.15107/rcub_dais_3980
ER  - 

@article{
author = "Jugović, Dragana and Milović, Miloš and Popović, Maja and Kusigerski, Vladan and Škapin, Srečo Davor and Rakočević, Zlatko and Mitrić, Miodrag",
year = "2019",
abstract = "The main goal of this research has been to investigate for the first time the effects of fluorination on the crystal structure, magnetic, and electrochemical properties of the P2-type NaxCoO2 powder. Sodium cobalt oxide with a P2-type structure is synthesized by a modified solid-state reaction consisting of alternating processes of rapid heating up to 750 °C and rapid cooling to the room temperature. The obtained powder is fluorinated using a gas-solid reaction with NH4HF2 as fluorinating agent. Fluorination causes a decrease of sodium content in the parent phase with the concurrent formation of the minor phases of Na2CO3 and NaF. The structure of NaxCoO2 in both powders is refined in P63/mmc space group. The results of the Rietveld refinement combined with the findings from the XPS measurements confirm the Na0.76CoO2 and Na0.44CoO1.96F0.04 stoichiometries for the pristine and fluorinated powders, respectively, which indicates that 4 at.% of fluorine ions per formula unit are incorporated in the structure. Preliminary electrochemical investigations have revealed an improved charge/discharge performance. The influence of fluorination on morphology and magnetic properties has also been examined.",
journal = "Journal of Alloys and Compounds",
title = "Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder",
pages = "30-37",
volume = "774",
doi = "10.1016/j.jallcom.2018.09.372",
url = "https://hdl.handle.net/21.15107/rcub_dais_3980"
}

Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S. D., Rakočević, Z.,& Mitrić, M.. (2019). Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. in Journal of Alloys and Compounds, 774, 30-37.
https://doi.org/10.1016/j.jallcom.2018.09.372
https://hdl.handle.net/21.15107/rcub_dais_3980

Jugović D, Milović M, Popović M, Kusigerski V, Škapin SD, Rakočević Z, Mitrić M. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. in Journal of Alloys and Compounds. 2019;774:30-37.
doi:10.1016/j.jallcom.2018.09.372
https://hdl.handle.net/21.15107/rcub_dais_3980 .

Jugović, Dragana, Milović, Miloš, Popović, Maja, Kusigerski, Vladan, Škapin, Srečo Davor, Rakočević, Zlatko, Mitrić, Miodrag, "Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder" in Journal of Alloys and Compounds, 774 (2019):30-37,
https://doi.org/10.1016/j.jallcom.2018.09.372 .,
https://hdl.handle.net/21.15107/rcub_dais_3980 .

TY  - JOUR
AU  - Jugović, Dragana
AU  - Milović, Miloš
AU  - Popović, Maja
AU  - Kusigerski, Vladan
AU  - Škapin, Srečo Davor
AU  - Rakočević, Zlatko
AU  - Mitrić, Miodrag
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0925838818336375
UR  - https://dais.sanu.ac.rs/123456789/3978
AB  - The main goal of this research has been to investigate for the first time the effects of fluorination on the crystal structure, magnetic, and electrochemical properties of the P2-type NaxCoO2 powder. Sodium cobalt oxide with a P2-type structure is synthesized by a modified solid-state reaction consisting of alternating processes of rapid heating up to 750 °C and rapid cooling to the room temperature. The obtained powder is fluorinated using a gas-solid reaction with NH4HF2 as fluorinating agent. Fluorination causes a decrease of sodium content in the parent phase with the concurrent formation of the minor phases of Na2CO3 and NaF. The structure of NaxCoO2 in both powders is refined in P63/mmc space group. The results of the Rietveld refinement combined with the findings from the XPS measurements confirm the Na0.76CoO2 and Na0.44CoO1.96F0.04 stoichiometries for the pristine and fluorinated powders, respectively, which indicates that 4 at.% of fluorine ions per formula unit are incorporated in the structure. Preliminary electrochemical investigations have revealed an improved charge/discharge performance. The influence of fluorination on morphology and magnetic properties has also been examined.
T2  - Journal of Alloys and Compounds
T1  - Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder
SP  - 30
EP  - 37
VL  - 774
DO  - 10.1016/j.jallcom.2018.09.372
UR  - https://hdl.handle.net/21.15107/rcub_dais_3978
ER  - 

@article{
author = "Jugović, Dragana and Milović, Miloš and Popović, Maja and Kusigerski, Vladan and Škapin, Srečo Davor and Rakočević, Zlatko and Mitrić, Miodrag",
year = "2019",
abstract = "The main goal of this research has been to investigate for the first time the effects of fluorination on the crystal structure, magnetic, and electrochemical properties of the P2-type NaxCoO2 powder. Sodium cobalt oxide with a P2-type structure is synthesized by a modified solid-state reaction consisting of alternating processes of rapid heating up to 750 °C and rapid cooling to the room temperature. The obtained powder is fluorinated using a gas-solid reaction with NH4HF2 as fluorinating agent. Fluorination causes a decrease of sodium content in the parent phase with the concurrent formation of the minor phases of Na2CO3 and NaF. The structure of NaxCoO2 in both powders is refined in P63/mmc space group. The results of the Rietveld refinement combined with the findings from the XPS measurements confirm the Na0.76CoO2 and Na0.44CoO1.96F0.04 stoichiometries for the pristine and fluorinated powders, respectively, which indicates that 4 at.% of fluorine ions per formula unit are incorporated in the structure. Preliminary electrochemical investigations have revealed an improved charge/discharge performance. The influence of fluorination on morphology and magnetic properties has also been examined.",
journal = "Journal of Alloys and Compounds",
title = "Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder",
pages = "30-37",
volume = "774",
doi = "10.1016/j.jallcom.2018.09.372",
url = "https://hdl.handle.net/21.15107/rcub_dais_3978"
}

Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S. D., Rakočević, Z.,& Mitrić, M.. (2019). Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. in Journal of Alloys and Compounds, 774, 30-37.
https://doi.org/10.1016/j.jallcom.2018.09.372
https://hdl.handle.net/21.15107/rcub_dais_3978

Jugović D, Milović M, Popović M, Kusigerski V, Škapin SD, Rakočević Z, Mitrić M. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. in Journal of Alloys and Compounds. 2019;774:30-37.
doi:10.1016/j.jallcom.2018.09.372
https://hdl.handle.net/21.15107/rcub_dais_3978 .

Jugović, Dragana, Milović, Miloš, Popović, Maja, Kusigerski, Vladan, Škapin, Srečo Davor, Rakočević, Zlatko, Mitrić, Miodrag, "Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder" in Journal of Alloys and Compounds, 774 (2019):30-37,
https://doi.org/10.1016/j.jallcom.2018.09.372 .,
https://hdl.handle.net/21.15107/rcub_dais_3978 .

TY  - CONF
AU  - Milović, Miloš
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Popović, Maja
AU  - Rakočević, Zlatko
AU  - Uskoković, Dragan
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/4572
AB  - Within this research the possibility of fluorine doping of the P2 type NaxCo02 powder was examined. As fluorine substitution already proved successful in improving cathode performance of layered lithium-based counterparts, the effects of fluorination on structure and electrochenlical properties ofP2 NaxCo02 were investigated and discussed.
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
PB  - Belgrade : Hydrogen Economy Initiative Serbia
C3  - Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018
T1  - Fluorination of sodium cobalt oxide: effects on structure and electrochemical performance
SP  - 98
EP  - 98
UR  - https://hdl.handle.net/21.15107/rcub_dais_4572
ER  - 

@conference{
author = "Milović, Miloš and Jugović, Dragana and Mitrić, Miodrag and Popović, Maja and Rakočević, Zlatko and Uskoković, Dragan",
year = "2018",
abstract = "Within this research the possibility of fluorine doping of the P2 type NaxCo02 powder was examined. As fluorine substitution already proved successful in improving cathode performance of layered lithium-based counterparts, the effects of fluorination on structure and electrochenlical properties ofP2 NaxCo02 were investigated and discussed.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade : Hydrogen Economy Initiative Serbia",
journal = "Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018",
title = "Fluorination of sodium cobalt oxide: effects on structure and electrochemical performance",
pages = "98-98",
url = "https://hdl.handle.net/21.15107/rcub_dais_4572"
}

Milović, M., Jugović, D., Mitrić, M., Popović, M., Rakočević, Z.,& Uskoković, D.. (2018). Fluorination of sodium cobalt oxide: effects on structure and electrochemical performance. in Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018
Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade., 98-98.
https://hdl.handle.net/21.15107/rcub_dais_4572

Milović M, Jugović D, Mitrić M, Popović M, Rakočević Z, Uskoković D. Fluorination of sodium cobalt oxide: effects on structure and electrochemical performance. in Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018. 2018;:98-98.
https://hdl.handle.net/21.15107/rcub_dais_4572 .

Milović, Miloš, Jugović, Dragana, Mitrić, Miodrag, Popović, Maja, Rakočević, Zlatko, Uskoković, Dragan, "Fluorination of sodium cobalt oxide: effects on structure and electrochemical performance" in Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018 (2018):98-98,
https://hdl.handle.net/21.15107/rcub_dais_4572 .