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Mentus, Slavko

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orcid::0000-0001-8155-8003
  • Mentus, Slavko (24)

Author's Bibliography

Supporting material for the article: Georgijević, R., Vujković, M., Gutić, S., Aliefendić, M., Jugović, D., Mitrić, M., Đokić, V., Mentus, S., 2019. The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution. Journal of Alloys and Compounds 776, 475–485. https://doi.org/10.1016/j.jallcom.2018.10.246

Georgijević, Radovan; Vujković, Milica; Gutić, Sanjin; Aliefendić, Meho; Jugović, Dragana; Mitrić, Miodrag; Đokić, Veljko; Mentus, Slavko

(2019)

@misc{
author = "Georgijević, Radovan and Vujković, Milica and Gutić, Sanjin and Aliefendić, Meho and Jugović, Dragana and Mitrić, Miodrag and Đokić, Veljko and Mentus, Slavko",
year = "2019",
url = "http://www.sciencedirect.com/science/article/pii/S0925838818339185, http://dais.sanu.ac.rs/123456789/5975",
journal = "Journal of Alloys and Compounds",
title = "Supporting material for the article: Georgijević, R., Vujković, M., Gutić, S., Aliefendić, M., Jugović, D., Mitrić, M., Đokić, V., Mentus, S., 2019. The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution. Journal of Alloys and Compounds 776, 475–485. https://doi.org/10.1016/j.jallcom.2018.10.246"
}

The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution

Georgijević, Radovan; Vujković, Milica; Gutić, Sanjin; Aliefendić, Meho; Jugović, Dragana; Mitrić, Miodrag; Đokić, Veljko; Mentus, Slavko

(Elsevier, 2019)

TY  - JOUR
AU  - Georgijević, Radovan
AU  - Vujković, Milica
AU  - Gutić, Sanjin
AU  - Aliefendić, Meho
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Đokić, Veljko
AU  - Mentus, Slavko
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0925838818339185
UR  - http://dais.sanu.ac.rs/123456789/4569
AB  - To contribute to the knowledge on the influence of synthesis procedure on the intercalation kinetics of lithium ions into phospho-olivines, LiFePO4/C composite samples (LFPC) were synthesized in two ways, the first one in a sol-gel procedure (SG), and the other in a solid-state reaction (SS). The X-ray diffractograms (XRD) of both samples overlapped with that of pure LiFePO4, taken from the crystallographic database. Scanning electron microscopy pictures indicated the high degree of interparticle sintering, which caused a considerable agglomerate growth. The results of potentiodynamic measurements in aqueous LiNO3 solution revealed that for SS sample, three times higher initial capacity from that of SG one, (amounting to 74 mAh g−1 at 5 mV s−1). However, capacity fade on rising scan rate is much more expressed for SS sample than for SG one. We suggest that a different degree of material utilization due to the incomplete coverage of olivine particles by carbon explains this difference. The technique of separation of diffusion and capacitance currents was applied in a kinetic analysis, but it was shown to be inappropriate. We suggest the inapplicability of classic CV theory to the intercalation system accompanied by phase transition. Instead, a model of ohmic resistance determination of process kinetics was considered. LFPC-SS sample delivers three times larger capacity in LiNO3, amounting to 74 mAh g−1 at 1 mV s−1.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution
SP  - 475
EP  - 485
VL  - 776
DO  - 10.1016/j.jallcom.2018.10.246
ER  - 
@article{
author = "Georgijević, Radovan and Vujković, Milica and Gutić, Sanjin and Aliefendić, Meho and Jugović, Dragana and Mitrić, Miodrag and Đokić, Veljko and Mentus, Slavko",
year = "2019",
url = "http://www.sciencedirect.com/science/article/pii/S0925838818339185, http://dais.sanu.ac.rs/123456789/4569",
abstract = "To contribute to the knowledge on the influence of synthesis procedure on the intercalation kinetics of lithium ions into phospho-olivines, LiFePO4/C composite samples (LFPC) were synthesized in two ways, the first one in a sol-gel procedure (SG), and the other in a solid-state reaction (SS). The X-ray diffractograms (XRD) of both samples overlapped with that of pure LiFePO4, taken from the crystallographic database. Scanning electron microscopy pictures indicated the high degree of interparticle sintering, which caused a considerable agglomerate growth. The results of potentiodynamic measurements in aqueous LiNO3 solution revealed that for SS sample, three times higher initial capacity from that of SG one, (amounting to 74 mAh g−1 at 5 mV s−1). However, capacity fade on rising scan rate is much more expressed for SS sample than for SG one. We suggest that a different degree of material utilization due to the incomplete coverage of olivine particles by carbon explains this difference. The technique of separation of diffusion and capacitance currents was applied in a kinetic analysis, but it was shown to be inappropriate. We suggest the inapplicability of classic CV theory to the intercalation system accompanied by phase transition. Instead, a model of ohmic resistance determination of process kinetics was considered. LFPC-SS sample delivers three times larger capacity in LiNO3, amounting to 74 mAh g−1 at 1 mV s−1.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution",
pages = "475-485",
volume = "776",
doi = "10.1016/j.jallcom.2018.10.246"
}
3
5
6

The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution

Georgijević, Radovan; Vujković, Milica; Gutić, Sanjin; Aliefendić, Meho; Jugović, Dragana; Mitrić, Miodrag; Đokić, Veljko; Mentus, Slavko

(Elsevier, 2019)

TY  - JOUR
AU  - Georgijević, Radovan
AU  - Vujković, Milica
AU  - Gutić, Sanjin
AU  - Aliefendić, Meho
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Đokić, Veljko
AU  - Mentus, Slavko
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0925838818339185
UR  - http://dais.sanu.ac.rs/123456789/4568
AB  - To contribute to the knowledge on the influence of synthesis procedure on the intercalation kinetics of lithium ions into phospho-olivines, LiFePO4/C composite samples (LFPC) were synthesized in two ways, the first one in a sol-gel procedure (SG), and the other in a solid-state reaction (SS). The X-ray diffractograms (XRD) of both samples overlapped with that of pure LiFePO4, taken from the crystallographic database. Scanning electron microscopy pictures indicated the high degree of interparticle sintering, which caused a considerable agglomerate growth. The results of potentiodynamic measurements in aqueous LiNO3 solution revealed that for SS sample, three times higher initial capacity from that of SG one, (amounting to 74 mAh g−1 at 5 mV s−1). However, capacity fade on rising scan rate is much more expressed for SS sample than for SG one. We suggest that a different degree of material utilization due to the incomplete coverage of olivine particles by carbon explains this difference. The technique of separation of diffusion and capacitance currents was applied in a kinetic analysis, but it was shown to be inappropriate. We suggest the inapplicability of classic CV theory to the intercalation system accompanied by phase transition. Instead, a model of ohmic resistance determination of process kinetics was considered. LFPC-SS sample delivers three times larger capacity in LiNO3, amounting to 74 mAh g−1 at 1 mV s−1.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution
SP  - 475
EP  - 485
VL  - 776
DO  - 10.1016/j.jallcom.2018.10.246
ER  - 
@article{
author = "Georgijević, Radovan and Vujković, Milica and Gutić, Sanjin and Aliefendić, Meho and Jugović, Dragana and Mitrić, Miodrag and Đokić, Veljko and Mentus, Slavko",
year = "2019",
url = "http://www.sciencedirect.com/science/article/pii/S0925838818339185, http://dais.sanu.ac.rs/123456789/4568",
abstract = "To contribute to the knowledge on the influence of synthesis procedure on the intercalation kinetics of lithium ions into phospho-olivines, LiFePO4/C composite samples (LFPC) were synthesized in two ways, the first one in a sol-gel procedure (SG), and the other in a solid-state reaction (SS). The X-ray diffractograms (XRD) of both samples overlapped with that of pure LiFePO4, taken from the crystallographic database. Scanning electron microscopy pictures indicated the high degree of interparticle sintering, which caused a considerable agglomerate growth. The results of potentiodynamic measurements in aqueous LiNO3 solution revealed that for SS sample, three times higher initial capacity from that of SG one, (amounting to 74 mAh g−1 at 5 mV s−1). However, capacity fade on rising scan rate is much more expressed for SS sample than for SG one. We suggest that a different degree of material utilization due to the incomplete coverage of olivine particles by carbon explains this difference. The technique of separation of diffusion and capacitance currents was applied in a kinetic analysis, but it was shown to be inappropriate. We suggest the inapplicability of classic CV theory to the intercalation system accompanied by phase transition. Instead, a model of ohmic resistance determination of process kinetics was considered. LFPC-SS sample delivers three times larger capacity in LiNO3, amounting to 74 mAh g−1 at 1 mV s−1.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution",
pages = "475-485",
volume = "776",
doi = "10.1016/j.jallcom.2018.10.246"
}
3
5
6

Synthesis, characterization and electrochemical properties of Na0.44MnO2 in NaNO3 and LiNO3 aqueous solution

Gezović, Aleksandra; Vujković, Milica; Jugović, Dragana; Janković Častvan, Ivona; Stojković Simatović, Ivana; Mentus, Slavko

(Belgrade : Society of Physical Chemists of Serbia, 2018)

TY  - CONF
AU  - Gezović, Aleksandra
AU  - Vujković, Milica
AU  - Jugović, Dragana
AU  - Janković Častvan, Ivona
AU  - Stojković Simatović, Ivana
AU  - Mentus, Slavko
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4562
AB  - Na0.44MnO2 synthesized by glycine-nitrate method (GNM) was described in
this paper and it was characterized by X-ray powder diffraction (XRD) and
field-emission scanning electron microscopy (FE-SEM). Electrochemical
performances of Na0.44MnO2 were studied by cycling voltammetry (CV) at
various scan rates in NaNO3 and LiNO3 aqueous solutions in order to
compare the intercalation/deintercalation kinetics of Li+ and Na+ ions. The
initial discharge capacity was found to be 27.1 and 27.44 in the aqueous
solution of NaNO3 and LiNO3, respectively, and after 30 cycles its values
increased for 12% in both electrolytes.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018
T1  - Synthesis, characterization and electrochemical properties of Na0.44MnO2 in NaNO3 and LiNO3 aqueous solution
SP  - 407
EP  - 410
ER  - 
@conference{
author = "Gezović, Aleksandra and Vujković, Milica and Jugović, Dragana and Janković Častvan, Ivona and Stojković Simatović, Ivana and Mentus, Slavko",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4562",
abstract = "Na0.44MnO2 synthesized by glycine-nitrate method (GNM) was described in
this paper and it was characterized by X-ray powder diffraction (XRD) and
field-emission scanning electron microscopy (FE-SEM). Electrochemical
performances of Na0.44MnO2 were studied by cycling voltammetry (CV) at
various scan rates in NaNO3 and LiNO3 aqueous solutions in order to
compare the intercalation/deintercalation kinetics of Li+ and Na+ ions. The
initial discharge capacity was found to be 27.1 and 27.44 in the aqueous
solution of NaNO3 and LiNO3, respectively, and after 30 cycles its values
increased for 12% in both electrolytes.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018",
title = "Synthesis, characterization and electrochemical properties of Na0.44MnO2 in NaNO3 and LiNO3 aqueous solution",
pages = "407-410"
}

Sunlight-driven Photocatalytic and Photo-electrochemical Activity of ZnO/SnO2 Composite

Marković, Smilja; Stojković Simatović, Ivana; Stanković, Ana; Škapin, Srečo Davor; Mančić, Lidija; Mentus, Slavko; Uskoković, Dragan

(Belgrade : Serbian Academy of Sciences and Arts, 2018)

TY  - CONF
AU  - Marković, Smilja
AU  - Stojković Simatović, Ivana
AU  - Stanković, Ana
AU  - Škapin, Srečo Davor
AU  - Mančić, Lidija
AU  - Mentus, Slavko
AU  - Uskoković, Dragan
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3631
AB  - Due to their high photoactivity, photostability, chemical inertness, simple syntheses procedures as well as low cost, semiconductor materials such as TiO2, ZnO, V2O5, and SnO2, are recognized as materials with a great potential for photoelectrochemical and photocatalytic applications. In particular, they can be used as photoanode in the process of photoelectrolysis of water, or to initiate decomposition of different organic or biological pollutants in water under light irradiation. Which wavelength of light will be absorbed depends on the semiconductor band gap; semiconductors with a wide band gap (> 3 eV) can absorb light in the UV range only, while those with a narrow band gap (< 3 eV) can be activated by visible light. Current trend in photo(electro)catalysis is to develop efficient semiconductors which can be activated by absorbing natural sunlight. During the years, various approaches have been developed to modify optical properties of semiconductors thus to be capable to absorb sunlight, for example: the incorporation of transition metal ions or defects into the crystal structure, the particles’ surface sensitization, hydrogenation, coupling of semiconductors with different band gap energies, etc.
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  - Sunlight-driven Photocatalytic and Photo-electrochemical Activity of ZnO/SnO2 Composite
SP  - 151
EP  - 153
ER  - 
@conference{
author = "Marković, Smilja and Stojković Simatović, Ivana and Stanković, Ana and Škapin, Srečo Davor and Mančić, Lidija and Mentus, Slavko and Uskoković, Dragan",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3631",
abstract = "Due to their high photoactivity, photostability, chemical inertness, simple syntheses procedures as well as low cost, semiconductor materials such as TiO2, ZnO, V2O5, and SnO2, are recognized as materials with a great potential for photoelectrochemical and photocatalytic applications. In particular, they can be used as photoanode in the process of photoelectrolysis of water, or to initiate decomposition of different organic or biological pollutants in water under light irradiation. Which wavelength of light will be absorbed depends on the semiconductor band gap; semiconductors with a wide band gap (> 3 eV) can absorb light in the UV range only, while those with a narrow band gap (< 3 eV) can be activated by visible light. Current trend in photo(electro)catalysis is to develop efficient semiconductors which can be activated by absorbing natural sunlight. During the years, various approaches have been developed to modify optical properties of semiconductors thus to be capable to absorb sunlight, for example: the incorporation of transition metal ions or defects into the crystal structure, the particles’ surface sensitization, hydrogenation, coupling of semiconductors with different band gap energies, etc.",
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 = "Sunlight-driven Photocatalytic and Photo-electrochemical Activity of ZnO/SnO2 Composite",
pages = "151-153"
}

Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment

Labus, Nebojša; Vasiljević, Zorka Ž.; Aleksić, Obrad S.; Luković, Miloljub D.; Marković, Smilja; Pavlović, Vladimir B.; Mentus, Slavko; Nikolić, Maria Vesna

(2017)

TY  - JOUR
AU  - Labus, Nebojša
AU  - Vasiljević, Zorka Ž.
AU  - Aleksić, Obrad S.
AU  - Luković, Miloljub D.
AU  - Marković, Smilja
AU  - Pavlović, Vladimir B.
AU  - Mentus, Slavko
AU  - Nikolić, Maria Vesna
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/2394
AB  - Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was to observe intensive milling influences on oxidation and reduction processes that will happen during subsequent heating. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in an air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized micro structurally with SEM on a fresh breakage. Obtained differential TGA diagrams suggest intensive changes during prolonged milling of the oxidation kinetics on heating. Ferrite powders changed with milling as well as with second run heating were characterized to enable determination of the potentially best ratio of milling and heating to be applied to obtain the desired microstructure.
T2  - Science of Sintering
T1  - Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment
SP  - 455
EP  - 467
VL  - 49
IS  - 4
DO  - 10.2298/SOS1704455L
ER  - 
@article{
author = "Labus, Nebojša and Vasiljević, Zorka Ž. and Aleksić, Obrad S. and Luković, Miloljub D. and Marković, Smilja and Pavlović, Vladimir B. and Mentus, Slavko and Nikolić, Maria Vesna",
year = "2017",
url = "http://dais.sanu.ac.rs/123456789/2394",
abstract = "Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was to observe intensive milling influences on oxidation and reduction processes that will happen during subsequent heating. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in an air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized micro structurally with SEM on a fresh breakage. Obtained differential TGA diagrams suggest intensive changes during prolonged milling of the oxidation kinetics on heating. Ferrite powders changed with milling as well as with second run heating were characterized to enable determination of the potentially best ratio of milling and heating to be applied to obtain the desired microstructure.",
journal = "Science of Sintering",
title = "Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment",
pages = "455-467",
volume = "49",
number = "4",
doi = "10.2298/SOS1704455L"
}
1
4
4

Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment

Labus, Nebojša; Vasiljević, Zorka Ž.; Aleksić, Obrad S.; Vuković, Miloljub; Marković, Smilja; Pavlović, Vladimir B.; Mentus, Slavko; Nikolić, Maria Vesna

(Belgrade : Serbian Ceramic Society, 2016)

TY  - CONF
AU  - Labus, Nebojša
AU  - Vasiljević, Zorka Ž.
AU  - Aleksić, Obrad S.
AU  - Vuković, Miloljub
AU  - Marković, Smilja
AU  - Pavlović, Vladimir B.
AU  - Mentus, Slavko
AU  - Nikolić, Maria Vesna
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/869
AB  - Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized microstructurally with SEM on a fresh breakage. Ferrite powders changed with milling as well as with second run heating are characterised to approach the possible best ratio of the milling and heating that should be used to obtain desired micrstructure.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade
T1  - Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment
SP  - 48
EP  - 48
ER  - 
@conference{
author = "Labus, Nebojša and Vasiljević, Zorka Ž. and Aleksić, Obrad S. and Vuković, Miloljub and Marković, Smilja and Pavlović, Vladimir B. and Mentus, Slavko and Nikolić, Maria Vesna",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/869",
abstract = "Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized microstructurally with SEM on a fresh breakage. Ferrite powders changed with milling as well as with second run heating are characterised to approach the possible best ratio of the milling and heating that should be used to obtain desired micrstructure.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade",
title = "Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment",
pages = "48-48"
}

Thermal treatment of oxides in different atmospheres

Labus, Nebojša; Vasiljević, Zorka Ž.; Mentus, Slavko; Pavlović, Vladimir B.; Luković, Miloljub D.; Nikolić, Maria Vesna

(2015)

@misc{
author = "Labus, Nebojša and Vasiljević, Zorka Ž. and Mentus, Slavko and Pavlović, Vladimir B. and Luković, Miloljub D. and Nikolić, Maria Vesna",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/739",
abstract = "Presentation at the Advanced Ceramics and Applications IV: New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, September 21-23, 2015",
title = "Thermal treatment of oxides in different atmospheres"
}

Reheating of zinc-titanate sintered specimens

Labus, Nebojša; Mentus, Slavko; Rakić, Srđan; Đurić, Zorka Ž.; Vujančević, Jelena; Nikolić, Maria Vesna

(Belgrade : International Institute for the Science of Sintering, 2015)

TY  - JOUR
AU  - Labus, Nebojša
AU  - Mentus, Slavko
AU  - Rakić, Srđan
AU  - Đurić, Zorka Ž.
AU  - Vujančević, Jelena
AU  - Nikolić, Maria Vesna
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/3537
AB  - The scope of this work was observing dimensional and heat transfer changes in ZnTiO3 samples during heating in nitrogen and air atmosphere. Interactions of bulk specimens with gaseous surrounding induce microstructure changes during heating. Sintered ZnTiO3 nanopowder samples were submitted to subsequent heating. Dilatation curves and thermogravimetric with simultaneous differential thermal analysis TGA/DTA curves were recorded. Reheating was performed in air and nitrogen atmospheres. Reheated samples obtained at different characteristic temperatures in air were analyzed by X-ray diffraction (XRD). Microstructures obtained by scanning electron microscopy (SEM) of reheated sintered samples are presented and compared. Reheating in a different atmosphere induced different microstructures. The goal was indicating possible causes leading to the microstructure changes. © 2015 International Institute for the Science of Sintering (IISS). All rights reserved.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Reheating of zinc-titanate sintered specimens
SP  - 71
EP  - 81
VL  - 47
IS  - 1
DO  - 10.2298/SOS1501071L
ER  - 
@article{
author = "Labus, Nebojša and Mentus, Slavko and Rakić, Srđan and Đurić, Zorka Ž. and Vujančević, Jelena and Nikolić, Maria Vesna",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/3537",
abstract = "The scope of this work was observing dimensional and heat transfer changes in ZnTiO3 samples during heating in nitrogen and air atmosphere. Interactions of bulk specimens with gaseous surrounding induce microstructure changes during heating. Sintered ZnTiO3 nanopowder samples were submitted to subsequent heating. Dilatation curves and thermogravimetric with simultaneous differential thermal analysis TGA/DTA curves were recorded. Reheating was performed in air and nitrogen atmospheres. Reheated samples obtained at different characteristic temperatures in air were analyzed by X-ray diffraction (XRD). Microstructures obtained by scanning electron microscopy (SEM) of reheated sintered samples are presented and compared. Reheating in a different atmosphere induced different microstructures. The goal was indicating possible causes leading to the microstructure changes. © 2015 International Institute for the Science of Sintering (IISS). All rights reserved.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Reheating of zinc-titanate sintered specimens",
pages = "71-81",
volume = "47",
number = "1",
doi = "10.2298/SOS1501071L"
}
2
2

Influence of nitrogen and air atmosphere during thermal treatment on micro and nano sized powders and sintered TiO2 specimens

Labus, Nebojša; Mentus, Slavko; Đurić, Zorka Ž.; Vujančević, Jelena; Nikolić, Maria Vesna

(2014)

TY  - JOUR
AU  - Labus, Nebojša
AU  - Mentus, Slavko
AU  - Đurić, Zorka Ž.
AU  - Vujančević, Jelena
AU  - Nikolić, Maria Vesna
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/589
AB  - The influence of air and nitrogen atmosphere during heating on TiO2 nano and micro sized powders as well as sintered polycrystalline specimens was analyzed. Sintering of TiO2 nano and micro powders in air atmosphere was monitored in a dilatometer. Non compacted nano and micro powders were analyzed separately in air and nitrogen atmospheres during heating using thermo gravimetric (TG) and differential thermal analysis (DTA). The anatase to rutile phase transition temperature interval is influenced by the powder particle size and atmosphere change. At lower temperatures for nano TiO2 powder a second order phase transition was detected by both thermal techniques. Polycrystalline specimens obtained by sintering from nano powders were reheated in the dilatometer in nitrogen and air atmosphere, and their shrinkage is found to be different. Powder particle size influence, as well as the air and nitrogen atmosphere influence was discussed.
AB  - Испитиван је утицај атмосфере ваздуха и азота током загревања TiO2 прахова нано и микро величине честица као и синтерованих поликристалних узорака. Синтеровање нано и микро прахова у атмосфери ваздуха праћено је дилатометријски. Прахови који претходно нису пресовани нано и микро величина честица, анализирани су методом термогравиметрије ТГ и дифернцијалне термијске анализе ДТА у атмосфери ваздуха и азота. Температурски интервал фазног прелаза из анатаса у рутил је претрпео промене услед различите величине честица као и услед утицаја атмосфере. На нижим температурама код нано праха уочен је фазни прелаз другог реда коришћењем обе термалне технике. Поликристални узорци добијени синтеровањем нано праха у ваздуху загервани су поново у атмосферама азота и ваздуха и њихово скупљање је различито. Утицај величине честица праха као и утицај атмосфере азота или ваздуха је коментарисан.
T2  - Science of Sintering
T1  - Influence of nitrogen and air atmosphere during thermal treatment on micro and nano sized powders and sintered TiO2 specimens
SP  - 365
EP  - 375
VL  - 46
IS  - 3
DO  - 10.2298/SOS1403365L
ER  - 
@article{
author = "Labus, Nebojša and Mentus, Slavko and Đurić, Zorka Ž. and Vujančević, Jelena and Nikolić, Maria Vesna",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/589",
abstract = "The influence of air and nitrogen atmosphere during heating on TiO2 nano and micro sized powders as well as sintered polycrystalline specimens was analyzed. Sintering of TiO2 nano and micro powders in air atmosphere was monitored in a dilatometer. Non compacted nano and micro powders were analyzed separately in air and nitrogen atmospheres during heating using thermo gravimetric (TG) and differential thermal analysis (DTA). The anatase to rutile phase transition temperature interval is influenced by the powder particle size and atmosphere change. At lower temperatures for nano TiO2 powder a second order phase transition was detected by both thermal techniques. Polycrystalline specimens obtained by sintering from nano powders were reheated in the dilatometer in nitrogen and air atmosphere, and their shrinkage is found to be different. Powder particle size influence, as well as the air and nitrogen atmosphere influence was discussed., Испитиван је утицај атмосфере ваздуха и азота током загревања TiO2 прахова нано и микро величине честица као и синтерованих поликристалних узорака. Синтеровање нано и микро прахова у атмосфери ваздуха праћено је дилатометријски. Прахови који претходно нису пресовани нано и микро величина честица, анализирани су методом термогравиметрије ТГ и дифернцијалне термијске анализе ДТА у атмосфери ваздуха и азота. Температурски интервал фазног прелаза из анатаса у рутил је претрпео промене услед различите величине честица као и услед утицаја атмосфере. На нижим температурама код нано праха уочен је фазни прелаз другог реда коришћењем обе термалне технике. Поликристални узорци добијени синтеровањем нано праха у ваздуху загервани су поново у атмосферама азота и ваздуха и њихово скупљање је различито. Утицај величине честица праха као и утицај атмосфере азота или ваздуха је коментарисан.",
journal = "Science of Sintering",
title = "Influence of nitrogen and air atmosphere during thermal treatment on micro and nano sized powders and sintered TiO2 specimens",
pages = "365-375",
volume = "46",
number = "3",
doi = "10.2298/SOS1403365L"
}
2
2

Influence of nitrogen and air atmosphere during thermal treatment on micro and nano sized powders and sintered TiO2 specimens

Labus, Nebojša; Mentus, Slavko; Đurić, Zorka Ž.; Nikolić, Maria Vesna

(Belgrade : International Institute for the Science of Sintering, 2014)

TY  - JOUR
AU  - Labus, Nebojša
AU  - Mentus, Slavko
AU  - Đurić, Zorka Ž.
AU  - Nikolić, Maria Vesna
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/657
AB  - The influence of air and nitrogen atmosphere during heating on TiO2 nano and micro sized powders as well as sintered polycrystalline specimens was analyzed. Sintering of TiO2 nano and micro powders in air atmosphere was monitored in a dilatometer. Non compacted nano and micro powders were analyzed separately in air and nitrogen atmospheres during heating using thermo gravimetric (TG) and differential thermal analysis (DTA). The anatase to rutile phase transition temperature interval is influenced by the powder particle size and atmosphere change. At lower temperatures for nano TiO2 powder a second order phase transition was detected by both thermal techniques. Polycrystalline specimens obtained by sintering from nano powders were reheated in the dilatometer in nitrogen and air atmosphere, and their shrinkage is found to be different. Powder particle size influence, as well as the air and nitrogen atmosphere influence was discussed. [Projekat Ministarstva nauke Republike Srbije, br. OI172057 i br. III45014]
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Influence of nitrogen and air atmosphere during thermal treatment on micro and nano sized powders and sintered TiO2 specimens
SP  - 365
EP  - 375
VL  - 46
IS  - 3
DO  - 10.2298/SOS1403365L
ER  - 
@article{
author = "Labus, Nebojša and Mentus, Slavko and Đurić, Zorka Ž. and Nikolić, Maria Vesna",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/657",
abstract = "The influence of air and nitrogen atmosphere during heating on TiO2 nano and micro sized powders as well as sintered polycrystalline specimens was analyzed. Sintering of TiO2 nano and micro powders in air atmosphere was monitored in a dilatometer. Non compacted nano and micro powders were analyzed separately in air and nitrogen atmospheres during heating using thermo gravimetric (TG) and differential thermal analysis (DTA). The anatase to rutile phase transition temperature interval is influenced by the powder particle size and atmosphere change. At lower temperatures for nano TiO2 powder a second order phase transition was detected by both thermal techniques. Polycrystalline specimens obtained by sintering from nano powders were reheated in the dilatometer in nitrogen and air atmosphere, and their shrinkage is found to be different. Powder particle size influence, as well as the air and nitrogen atmosphere influence was discussed. [Projekat Ministarstva nauke Republike Srbije, br. OI172057 i br. III45014]",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Influence of nitrogen and air atmosphere during thermal treatment on micro and nano sized powders and sintered TiO2 specimens",
pages = "365-375",
volume = "46",
number = "3",
doi = "10.2298/SOS1403365L"
}
2
2

Geopolymer materials based on the electric arc furnace slag

Nikolić, Irena; Janković Častvan, Ivona; Radmilović, Vuk V.; Karanović, Ljiljana; Marković, Smilja; Mentus, Slavko; Radmilović, Velimir R.

(Belgrade : Materials Research Society of Serbia, 2013)

TY  - CONF
AU  - Nikolić, Irena
AU  - Janković Častvan, Ivona
AU  - Radmilović, Vuk V.
AU  - Karanović, Ljiljana
AU  - Marković, Smilja
AU  - Mentus, Slavko
AU  - Radmilović, Velimir R.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/401
AB  - The remelting of iron and steel scrap in the electric arc furnaces generates the non-hazardous waste – electric arc furnace slag (EAFS), which can be disposed of to appropriate landfills. Currently, this slag found its application in conventional concrete production to improve its mechanical, chemical and physical properties, as an additive to asphalt base mixture and in cement production. In this study we have investigated the effect of alkaline dosage on the strength and thermal resistance of EAFS based geopolymers. The results have shown that these materials are mainly amorphous with some crystal phases remained from the undisolved EAFS such as larnite, gehlenite, wuestite, monticellite, calcite. Compressive strength of these materials is strongly influenced by the alkaline dosage. An increase of NaOH concentration in the interval of 7-10 M leads to the increase of geopolymer’s strength. The maximal compressive strength of EAFS based geopolymer was obtained using the 10 M NaOH. Further increase of alkaline dosage to the value of 13 M NaOH results in the slight decrease of the geopolymer strength. Additionally, depending on the synthesis parameters, EAFS based geopolymers exhibit improved durability in high temperature environments in comparison with conventional cement based materials. All investigated samples exhibit a shrinkage which is attributed to the change of porosity. The mass loss due to the loss of water was also observed. This research was supported by a Ministry of Science of Montenegro under the contract No 01-460.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - Geopolymer materials based on the electric arc furnace slag
SP  - 47
EP  - 47
ER  - 
@conference{
author = "Nikolić, Irena and Janković Častvan, Ivona and Radmilović, Vuk V. and Karanović, Ljiljana and Marković, Smilja and Mentus, Slavko and Radmilović, Velimir R.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/401",
abstract = "The remelting of iron and steel scrap in the electric arc furnaces generates the non-hazardous waste – electric arc furnace slag (EAFS), which can be disposed of to appropriate landfills. Currently, this slag found its application in conventional concrete production to improve its mechanical, chemical and physical properties, as an additive to asphalt base mixture and in cement production. In this study we have investigated the effect of alkaline dosage on the strength and thermal resistance of EAFS based geopolymers. The results have shown that these materials are mainly amorphous with some crystal phases remained from the undisolved EAFS such as larnite, gehlenite, wuestite, monticellite, calcite. Compressive strength of these materials is strongly influenced by the alkaline dosage. An increase of NaOH concentration in the interval of 7-10 M leads to the increase of geopolymer’s strength. The maximal compressive strength of EAFS based geopolymer was obtained using the 10 M NaOH. Further increase of alkaline dosage to the value of 13 M NaOH results in the slight decrease of the geopolymer strength. Additionally, depending on the synthesis parameters, EAFS based geopolymers exhibit improved durability in high temperature environments in comparison with conventional cement based materials. All investigated samples exhibit a shrinkage which is attributed to the change of porosity. The mass loss due to the loss of water was also observed. This research was supported by a Ministry of Science of Montenegro under the contract No 01-460.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "Geopolymer materials based on the electric arc furnace slag",
pages = "47-47"
}

The incorporation of vanadium into olivine LiFePO4/C: improvement of lithium intercalation from both organic and aqueous electrolyte

Vujković, Milica; Jugović, Dragana; Mitrić, Miodrag; Stojković Simatović, Ivana; Cvjetićanin, Nikola; Mentus, Slavko

(Belgrade : Materials Research Society of Serbia, 2013)

TY  - CONF
AU  - Vujković, Milica
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Stojković Simatović, Ivana
AU  - Cvjetićanin, Nikola
AU  - Mentus, Slavko
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/407
AB  - The simple and fast (malonic acid+glycine)-assisted gel-combustion process, followed by a heat treatment at 750oC under reductive atmosphere, is found to be a very effective way for the synthesis of (V-doped LiFePO4)/C composites. The Rietveld refinement confirms that vanadium incorporation into olivine structure was accompanied by the formation of iron phosphide conducting phase. The coulombic capacity and rate capability of (V-doped LiFePO4)/C composite, in both organic and aqueous electrolyte solutions, were significantly improved relative to an undoped sample, as revealed by both galvanostatic cycling and cyclic voltammetry. The average discharging capacities of ~5mol.%V-doped LiFePO4/C composite in an aqueous LiNO3 solution were 91, 73 and 35 mAh g-1 at 1, 10 and 100 C, respectively, with no perceivable capacity fade upon 100 charging/discharging cycles.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - The incorporation of vanadium into olivine LiFePO4/C: improvement of lithium intercalation from both organic and aqueous electrolyte
SP  - 101
EP  - 101
ER  - 
@conference{
author = "Vujković, Milica and Jugović, Dragana and Mitrić, Miodrag and Stojković Simatović, Ivana and Cvjetićanin, Nikola and Mentus, Slavko",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/407",
abstract = "The simple and fast (malonic acid+glycine)-assisted gel-combustion process, followed by a heat treatment at 750oC under reductive atmosphere, is found to be a very effective way for the synthesis of (V-doped LiFePO4)/C composites. The Rietveld refinement confirms that vanadium incorporation into olivine structure was accompanied by the formation of iron phosphide conducting phase. The coulombic capacity and rate capability of (V-doped LiFePO4)/C composite, in both organic and aqueous electrolyte solutions, were significantly improved relative to an undoped sample, as revealed by both galvanostatic cycling and cyclic voltammetry. The average discharging capacities of ~5mol.%V-doped LiFePO4/C composite in an aqueous LiNO3 solution were 91, 73 and 35 mAh g-1 at 1, 10 and 100 C, respectively, with no perceivable capacity fade upon 100 charging/discharging cycles.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "The incorporation of vanadium into olivine LiFePO4/C: improvement of lithium intercalation from both organic and aqueous electrolyte",
pages = "101-101"
}

The LiFe(1-x)VxPO4/C Composite Synthesized by Gel-Combustion Method, with Improved Rate Capability and Cycle Life in Aerated Aqueous Solutions

Vujković, Milica; Jugović, Dragana; Mitrić, Miodrag; Stojković, Ivana; Cvjetićanin, Nikola; Mentus, Slavko

(Elsevier, 2013)

TY  - JOUR
AU  - Vujković, Milica
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Stojković, Ivana
AU  - Cvjetićanin, Nikola
AU  - Mentus, Slavko
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/384
AB  - The nitrate-(glycine + malonic acid)-assisted gel-combustion process, followed by a heat treatment at 750 °C under reductive atmosphere, was used as a fast and effective way to synthesize vanadium doped olivine incorporated in carbon matrix, of general formula LiFe(1−x)VxPO4/C. The two-phased Rietveld refinement confirmed that vanadium incorporation into olivine structure was complete. The heating under reduction atmosphere caused the formation of iron phosphide to some extent, the concentration was determined by Rietveld analysis. The capacity and rate capability of these composites were tested by both cyclic voltammetry and galvanostatic cycling. Specifically, the average discharging capacities of the composite with x = 0.055, determined in an saturated aqueous LiNO3 solution equilibrated with air, at the rates of 1, 10 and 100 C, amounted to 91, 73 and 35 mAh g−1, respectively, with no perceivable capacity fade.
PB  - Elsevier
T2  - Electrochimica Acta
T1  - The LiFe(1-x)VxPO4/C Composite Synthesized by Gel-Combustion Method, with Improved Rate Capability and Cycle Life in Aerated Aqueous Solutions
SP  - 835
EP  - 842
VL  - 109
DO  - 10.1016/j.electacta.2013.07.219
ER  - 
@article{
author = "Vujković, Milica and Jugović, Dragana and Mitrić, Miodrag and Stojković, Ivana and Cvjetićanin, Nikola and Mentus, Slavko",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/384",
abstract = "The nitrate-(glycine + malonic acid)-assisted gel-combustion process, followed by a heat treatment at 750 °C under reductive atmosphere, was used as a fast and effective way to synthesize vanadium doped olivine incorporated in carbon matrix, of general formula LiFe(1−x)VxPO4/C. The two-phased Rietveld refinement confirmed that vanadium incorporation into olivine structure was complete. The heating under reduction atmosphere caused the formation of iron phosphide to some extent, the concentration was determined by Rietveld analysis. The capacity and rate capability of these composites were tested by both cyclic voltammetry and galvanostatic cycling. Specifically, the average discharging capacities of the composite with x = 0.055, determined in an saturated aqueous LiNO3 solution equilibrated with air, at the rates of 1, 10 and 100 C, amounted to 91, 73 and 35 mAh g−1, respectively, with no perceivable capacity fade.",
publisher = "Elsevier",
journal = "Electrochimica Acta",
title = "The LiFe(1-x)VxPO4/C Composite Synthesized by Gel-Combustion Method, with Improved Rate Capability and Cycle Life in Aerated Aqueous Solutions",
pages = "835-842",
volume = "109",
doi = "10.1016/j.electacta.2013.07.219"
}
19
23
22

Electrochemical Behaviour of V2O5 Xerogel and V2O5 Xerogel/C Composite in an Aqueous LiNO3 and Mg(NO3)(2) Solutions

Stojković, Ivana; Cvjetićanin, Nikola; Marković, Smilja; Mitrić, Miodrag; Mentus, Slavko

(2010)

TY  - JOUR
AU  - Stojković, Ivana
AU  - Cvjetićanin, Nikola
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Mentus, Slavko
PY  - 2010
UR  - http://dais.sanu.ac.rs/123456789/3353
AB  - We synthesized both the V2O5 xerogel and the composite V2O5 xerogel/C starting from the solution of V2O5 in hydrogen peroxide. After the characterization by XRD, thermal (TCA-DTA), SEM methods and by particle size analysis, the investigation of Li+ and Mg2+ intercalation/deintercalation reactions in an aqueous solutions of LiNO3 and Mg(NO3)(2) were performed by cyclic voltammetry. The composite material V2O5 xerogel/C displayed relatively high intercalation capacity, amounting to 123 mA h g(-1) and 107 mA h g(-1), in lithium and magnesium salt solutions, respectively.
T2  - Acta Physica Polonica A
T1  - Electrochemical Behaviour of V2O5 Xerogel and V2O5 Xerogel/C Composite in an Aqueous LiNO3 and Mg(NO3)(2) Solutions
SP  - 837
EP  - 840
VL  - 117
IS  - 5
DO  - 10.12693/APhysPolA.117.837
ER  - 
@article{
author = "Stojković, Ivana and Cvjetićanin, Nikola and Marković, Smilja and Mitrić, Miodrag and Mentus, Slavko",
year = "2010",
url = "http://dais.sanu.ac.rs/123456789/3353",
abstract = "We synthesized both the V2O5 xerogel and the composite V2O5 xerogel/C starting from the solution of V2O5 in hydrogen peroxide. After the characterization by XRD, thermal (TCA-DTA), SEM methods and by particle size analysis, the investigation of Li+ and Mg2+ intercalation/deintercalation reactions in an aqueous solutions of LiNO3 and Mg(NO3)(2) were performed by cyclic voltammetry. The composite material V2O5 xerogel/C displayed relatively high intercalation capacity, amounting to 123 mA h g(-1) and 107 mA h g(-1), in lithium and magnesium salt solutions, respectively.",
journal = "Acta Physica Polonica A",
title = "Electrochemical Behaviour of V2O5 Xerogel and V2O5 Xerogel/C Composite in an Aqueous LiNO3 and Mg(NO3)(2) Solutions",
pages = "837-840",
volume = "117",
number = "5",
doi = "10.12693/APhysPolA.117.837"
}
20
22
23

Electrical properties of barium titanate stannate functionally graded materials

Marković, Smilja; Jovalekić, Čedomir; Veselinović, Ljiljana; Mentus, Slavko; Uskoković, Dragan

(Elsevier, 2010)

TY  - JOUR
AU  - Marković, Smilja
AU  - Jovalekić, Čedomir
AU  - Veselinović, Ljiljana
AU  - Mentus, Slavko
AU  - Uskoković, Dragan
PY  - 2010
UR  - http://dais.sanu.ac.rs/123456789/3425
AB  - Barium titanate stannate (BTS) functionally graded materials (FGMs) with different tin/titanium concentration gradient were prepared by the powder-stacking method and uniaxially pressing process, followed by sintering. Impedance spectroscopy (IS) was used to determine the electrical characteristics of FGMs and ingredient BTS ceramics, as well as to distinguish the grain-interior and grain boundary resistivity of the ceramics. Activation energies of FGMs and ingredients were calculated. It has been established that for BTS ceramics the activation energy deduced from grain-interior conductivity (0.73-0.75 eV) is defined by chemical composition, while activation energy for grain boundary conductivity (1.07-1.25 eV) is influenced by microstructural development (density and average grain size). Furthermore, for FGMs, activation energy for grain-interior conductivity kept the intrinsic properties (0.74-0.78 eV) and did not depend on tin/titanium concentration gradient, while activation energy (1.03-1.29 eV) for grain boundary was determined by the microstructural gradient. No point dissipation was observed by IS, accordingly, no insulator interfaces (cracks and/or delamination) between graded layers were detected. © 2009 Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - Journal of the European Ceramic Society
T1  - Electrical properties of barium titanate stannate functionally graded materials
SP  - 1427
EP  - 1435
VL  - 30
IS  - 6
DO  - 10.1016/j.jeurceramsoc.2009.10.020
ER  - 
@article{
author = "Marković, Smilja and Jovalekić, Čedomir and Veselinović, Ljiljana and Mentus, Slavko and Uskoković, Dragan",
year = "2010",
url = "http://dais.sanu.ac.rs/123456789/3425",
abstract = "Barium titanate stannate (BTS) functionally graded materials (FGMs) with different tin/titanium concentration gradient were prepared by the powder-stacking method and uniaxially pressing process, followed by sintering. Impedance spectroscopy (IS) was used to determine the electrical characteristics of FGMs and ingredient BTS ceramics, as well as to distinguish the grain-interior and grain boundary resistivity of the ceramics. Activation energies of FGMs and ingredients were calculated. It has been established that for BTS ceramics the activation energy deduced from grain-interior conductivity (0.73-0.75 eV) is defined by chemical composition, while activation energy for grain boundary conductivity (1.07-1.25 eV) is influenced by microstructural development (density and average grain size). Furthermore, for FGMs, activation energy for grain-interior conductivity kept the intrinsic properties (0.74-0.78 eV) and did not depend on tin/titanium concentration gradient, while activation energy (1.03-1.29 eV) for grain boundary was determined by the microstructural gradient. No point dissipation was observed by IS, accordingly, no insulator interfaces (cracks and/or delamination) between graded layers were detected. © 2009 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "Journal of the European Ceramic Society",
title = "Electrical properties of barium titanate stannate functionally graded materials",
pages = "1427-1435",
volume = "30",
number = "6",
doi = "10.1016/j.jeurceramsoc.2009.10.020"
}
17
15
19

Densification, Microstructure, and Electrical Properties of BaTiO3 (BT) Ceramics Prepared from Ultrasonically De-Agglomerated BT Powders

Marković, Smilja; Miljković, Miroslav; Jovalekić, Čedomir; Mentus, Slavko; Uskoković, Dragan

(Taylor & Francis, 2009)

TY  - JOUR
AU  - Marković, Smilja
AU  - Miljković, Miroslav
AU  - Jovalekić, Čedomir
AU  - Mentus, Slavko
AU  - Uskoković, Dragan
PY  - 2009
UR  - http://dais.sanu.ac.rs/123456789/178
AB  - In this study, a correlation between densification, microstructure, and electrical properties of BaTiO3 (BT) ceramics prepared from ultrasonically de-agglomerated BT powders has been analyzed. BT powders with the same crystal structure (tetragonal) and stoichiometry, but with different average particle size, were used to prepare sintered ceramics. Densification and electrical properties of the sintered BT ceramics were correlated to the average particle size of the powders. It was found that a decrease in average particle size improved the densification process as well as the ceramics' microstructure. The impedance measurements were done up to 320°C in order to separate grain (bulk) and grain boundary contributions. Bulk resistance was more or less the same, independent on the average particle size of the powder. On the contrary, grain boundary resistance increased with decreasing average particle size of the powder.
PB  - Taylor & Francis
T2  - Materials and Manufacturing Processes
T1  - Densification, Microstructure, and Electrical Properties of BaTiO3 (BT) Ceramics Prepared from Ultrasonically De-Agglomerated BT Powders
SP  - 1114
EP  - 1123
VL  - 24
IS  - 10-11
DO  - 10.1080/10426910903031750
ER  - 
@article{
author = "Marković, Smilja and Miljković, Miroslav and Jovalekić, Čedomir and Mentus, Slavko and Uskoković, Dragan",
year = "2009",
url = "http://dais.sanu.ac.rs/123456789/178",
abstract = "In this study, a correlation between densification, microstructure, and electrical properties of BaTiO3 (BT) ceramics prepared from ultrasonically de-agglomerated BT powders has been analyzed. BT powders with the same crystal structure (tetragonal) and stoichiometry, but with different average particle size, were used to prepare sintered ceramics. Densification and electrical properties of the sintered BT ceramics were correlated to the average particle size of the powders. It was found that a decrease in average particle size improved the densification process as well as the ceramics' microstructure. The impedance measurements were done up to 320°C in order to separate grain (bulk) and grain boundary contributions. Bulk resistance was more or less the same, independent on the average particle size of the powder. On the contrary, grain boundary resistance increased with decreasing average particle size of the powder.",
publisher = "Taylor & Francis",
journal = "Materials and Manufacturing Processes",
title = "Densification, Microstructure, and Electrical Properties of BaTiO3 (BT) Ceramics Prepared from Ultrasonically De-Agglomerated BT Powders",
pages = "1114-1123",
volume = "24",
number = "10-11",
doi = "10.1080/10426910903031750"
}
19
18
17

Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method

Jugović, Dragana; Mitrić, Miodrag; Cvjetićanin, Nikola; Jančar, Boštjan; Mentus, Slavko; Uskoković, Dragan

(2008)

TY  - JOUR
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Cvjetićanin, Nikola
AU  - Jančar, Boštjan
AU  - Mentus, Slavko
AU  - Uskoković, Dragan
PY  - 2008
UR  - http://dais.sanu.ac.rs/123456789/2739
AB  - Lithium iron phosphate has become of great interest as storage cathode for the next generation of rechargeable lithium batteries. Olivine structure LiFePO(4)/C composite powder was prepared by ultrasound assisted synthesis. A polyvinyl alcohol solution was used as the source of an in situ formed carbon. X-ray powder diffraction confirmed the phase purity. X-ray powder diffraction data were used for the crystal structure refinement, based on Rietveld full profile method. All relevant structural and microstructural crystal parameters that could be significant for electrochemical intercalation/deintercalation processes were determined. The Rietveld refinement also showed additional electron density on the lithium sites, indicating 3 at.% iron on the lithium site. Electrochemical characteristic of the composite was evaluated by using galvanostatic charge/discharge tests. While cycling at C/3 (C/10) rate the discharge capacity increases, starting from the value of 94.1 (116.0) mAh/g and reaching 99.5 (124.0) mAh/g at the end of the cycling. Particle morphology was revealed by both scanning and transmission electron microscopies. On the thin particle edges carbon film with a typical thickness of several nanometers can be observed, as well as small carbon agglomerates (typical size LT 6 nm) at certain spots on the substrate surface. (c) 2008 Elsevier B.V. All rights reserved.
T2  - Solid State Ionics
T1  - Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method
SP  - 415
EP  - 419
VL  - 179
IS  - 11-12
DO  - 10.1016/j.ssi.2008.03.014
ER  - 
@article{
author = "Jugović, Dragana and Mitrić, Miodrag and Cvjetićanin, Nikola and Jančar, Boštjan and Mentus, Slavko and Uskoković, Dragan",
year = "2008",
url = "http://dais.sanu.ac.rs/123456789/2739",
abstract = "Lithium iron phosphate has become of great interest as storage cathode for the next generation of rechargeable lithium batteries. Olivine structure LiFePO(4)/C composite powder was prepared by ultrasound assisted synthesis. A polyvinyl alcohol solution was used as the source of an in situ formed carbon. X-ray powder diffraction confirmed the phase purity. X-ray powder diffraction data were used for the crystal structure refinement, based on Rietveld full profile method. All relevant structural and microstructural crystal parameters that could be significant for electrochemical intercalation/deintercalation processes were determined. The Rietveld refinement also showed additional electron density on the lithium sites, indicating 3 at.% iron on the lithium site. Electrochemical characteristic of the composite was evaluated by using galvanostatic charge/discharge tests. While cycling at C/3 (C/10) rate the discharge capacity increases, starting from the value of 94.1 (116.0) mAh/g and reaching 99.5 (124.0) mAh/g at the end of the cycling. Particle morphology was revealed by both scanning and transmission electron microscopies. On the thin particle edges carbon film with a typical thickness of several nanometers can be observed, as well as small carbon agglomerates (typical size LT 6 nm) at certain spots on the substrate surface. (c) 2008 Elsevier B.V. All rights reserved.",
journal = "Solid State Ionics",
title = "Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method",
pages = "415-419",
volume = "179",
number = "11-12",
doi = "10.1016/j.ssi.2008.03.014"
}
32
36
44

Synthesis and characterization of LiFePO4/C composite obtained by sonochemical method

Jugović, Dragana; Mitrić, Miodrag; Cvjetićanin, Nikola; Jančar, Boštjan; Mentus, Slavko; Uskoković, Dragan

(2008)

TY  - JOUR
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Cvjetićanin, Nikola
AU  - Jančar, Boštjan
AU  - Mentus, Slavko
AU  - Uskoković, Dragan
PY  - 2008
UR  - http://dais.sanu.ac.rs/123456789/754
AB  - Lithium iron phosphate has become of great interest as storage cathode for the next generation of rechargeable lithium batteries. Olivine structure LiFePO4/C composite powder was prepared by ultrasound assisted synthesis. A polyvinyl alcohol solution was used as the source of an in situ formed carbon. X-ray powder diffraction confirmed the phase purity. X-ray powder diffraction data were used for the crystal structure refinement, based on Rietveld full profile method. All relevant structural and microstructural crystal parameters that could be significant for electrochemical intercalation/deintercalation processes were determined. The Rietveld refinement also showed additional electron density on the lithium sites, indicating 3 at.% iron on the lithium site. Electrochemical characteristic of the composite was evaluated by using galvanostatic charge/discharge tests. While cycling at C/3 (C/10) rate the discharge capacity increases, starting from the value of 94.1 (116.0) mAh/g and reaching 99.5 (124.0) mAh/g at the end of the cycling. Particle morphology was revealed by both scanning and transmission electron microscopies. On the thin particle edges carbon film with a typical thickness of several nanometers can be observed, as well as small carbon agglomerates (typical size < 6 nm) at certain spots on the substrate surface.
T2  - Solid State Ionics
T1  - Synthesis and characterization of LiFePO4/C composite obtained by sonochemical method
SP  - 415
EP  - 419
IS  - 11-12
DO  - 10.1016/j.ssi.2008.03.014
ER  - 
@article{
author = "Jugović, Dragana and Mitrić, Miodrag and Cvjetićanin, Nikola and Jančar, Boštjan and Mentus, Slavko and Uskoković, Dragan",
year = "2008",
url = "http://dais.sanu.ac.rs/123456789/754",
abstract = "Lithium iron phosphate has become of great interest as storage cathode for the next generation of rechargeable lithium batteries. Olivine structure LiFePO4/C composite powder was prepared by ultrasound assisted synthesis. A polyvinyl alcohol solution was used as the source of an in situ formed carbon. X-ray powder diffraction confirmed the phase purity. X-ray powder diffraction data were used for the crystal structure refinement, based on Rietveld full profile method. All relevant structural and microstructural crystal parameters that could be significant for electrochemical intercalation/deintercalation processes were determined. The Rietveld refinement also showed additional electron density on the lithium sites, indicating 3 at.% iron on the lithium site. Electrochemical characteristic of the composite was evaluated by using galvanostatic charge/discharge tests. While cycling at C/3 (C/10) rate the discharge capacity increases, starting from the value of 94.1 (116.0) mAh/g and reaching 99.5 (124.0) mAh/g at the end of the cycling. Particle morphology was revealed by both scanning and transmission electron microscopies. On the thin particle edges carbon film with a typical thickness of several nanometers can be observed, as well as small carbon agglomerates (typical size < 6 nm) at certain spots on the substrate surface.",
journal = "Solid State Ionics",
title = "Synthesis and characterization of LiFePO4/C composite obtained by sonochemical method",
pages = "415-419",
number = "11-12",
doi = "10.1016/j.ssi.2008.03.014"
}
32
36
44

Ultrasound-assisted synthesis of nanostructured LiFePO4/C composite

Jugović, Dragana; Mitrić, Miodrag; Cvjetićanin, Nikola; Jančar, Boštjan; Mentus, Slavko; Uskoković, Dragan

(2008)

TY  - CONF
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Cvjetićanin, Nikola
AU  - Jančar, Boštjan
AU  - Mentus, Slavko
AU  - Uskoković, Dragan
PY  - 2008
UR  - http://dais.sanu.ac.rs/123456789/295
AB  - Poster presented at the Women in Nano Winter School, Kranjska Gora, Slovenia, February 7-9, 2008
T1  - Ultrasound-assisted synthesis of nanostructured LiFePO4/C composite
ER  - 
@conference{
author = "Jugović, Dragana and Mitrić, Miodrag and Cvjetićanin, Nikola and Jančar, Boštjan and Mentus, Slavko and Uskoković, Dragan",
year = "2008",
url = "http://dais.sanu.ac.rs/123456789/295",
abstract = "Poster presented at the Women in Nano Winter School, Kranjska Gora, Slovenia, February 7-9, 2008",
title = "Ultrasound-assisted synthesis of nanostructured LiFePO4/C composite"
}

Structural and Electrochemical Properties of LiFePo4/C Composites Obtained through Ultrasound Assisted Synthesis

Jugović, Dragana; Mitrić, Miodrag; Cvjetićanin, Nikola; Mentus, Slavko; Uskoković, Dragan

(2008)

TY  - CONF
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Cvjetićanin, Nikola
AU  - Mentus, Slavko
AU  - Uskoković, Dragan
PY  - 2008
UR  - http://dais.sanu.ac.rs/123456789/277
AB  - Poster presented at PHYSICAL CHEMISTRY 2008. 9th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Belgrade, September 24-26, 2008
T1  - Structural and Electrochemical Properties of LiFePo4/C Composites Obtained through Ultrasound Assisted Synthesis
ER  - 
@conference{
author = "Jugović, Dragana and Mitrić, Miodrag and Cvjetićanin, Nikola and Mentus, Slavko and Uskoković, Dragan",
year = "2008",
url = "http://dais.sanu.ac.rs/123456789/277",
abstract = "Poster presented at PHYSICAL CHEMISTRY 2008. 9th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Belgrade, September 24-26, 2008",
title = "Structural and Electrochemical Properties of LiFePo4/C Composites Obtained through Ultrasound Assisted Synthesis"
}

Densification, Microstructure an Electrical Properties of Baruim Titanate (BT) Ceramic Prepared from Ultrasonically De-agglomerated BT Powders

Marković, Smilja; Miljković, M.; Mentus, Slavko; Uskoković, Dragan

(2008)

TY  - CONF
AU  - Marković, Smilja
AU  - Miljković, M.
AU  - Mentus, Slavko
AU  - Uskoković, Dragan
PY  - 2008
UR  - http://dais.sanu.ac.rs/123456789/299
AB  - Poster presented at the 10th Conference of the Materials Research Society of Serbia - YUCOMAT 2008, Herceg Novi, Montenegro, September 8-12, 2008.
T1  - Densification, Microstructure an Electrical Properties of Baruim Titanate (BT) Ceramic Prepared from Ultrasonically De-agglomerated BT Powders
ER  - 
@conference{
author = "Marković, Smilja and Miljković, M. and Mentus, Slavko and Uskoković, Dragan",
year = "2008",
url = "http://dais.sanu.ac.rs/123456789/299",
abstract = "Poster presented at the 10th Conference of the Materials Research Society of Serbia - YUCOMAT 2008, Herceg Novi, Montenegro, September 8-12, 2008.",
title = "Densification, Microstructure an Electrical Properties of Baruim Titanate (BT) Ceramic Prepared from Ultrasonically De-agglomerated BT Powders"
}

Characterization of Barium Titanate Ceramics by Impedance Spectroscopy

Marković, Smilja; Mentus, Slavko; Jovalekić, Čedomir; Uskoković, Dragan

(2007)

TY  - CONF
AU  - Marković, Smilja
AU  - Mentus, Slavko
AU  - Jovalekić, Čedomir
AU  - Uskoković, Dragan
PY  - 2007
UR  - http://dais.sanu.ac.rs/123456789/320
AB  - Poster presented at the 9th Conference of the Yugoslav Materials Research Society - YUCOMAT 2007, Herceg Novi, Crna Gora, 10-14. septembar 2007.
T1  - Characterization of Barium Titanate Ceramics by Impedance Spectroscopy
ER  - 
@conference{
author = "Marković, Smilja and Mentus, Slavko and Jovalekić, Čedomir and Uskoković, Dragan",
year = "2007",
url = "http://dais.sanu.ac.rs/123456789/320",
abstract = "Poster presented at the 9th Conference of the Yugoslav Materials Research Society - YUCOMAT 2007, Herceg Novi, Crna Gora, 10-14. septembar 2007.",
title = "Characterization of Barium Titanate Ceramics by Impedance Spectroscopy"
}

Synthesis of LiMn2O4 by glycine-nitrate method

Jugović, Dragana; Cvjetićanin, Nikola; Kusigerski, Vladan; Mentus, Slavko

(2003)

TY  - JOUR
AU  - Jugović, Dragana
AU  - Cvjetićanin, Nikola
AU  - Kusigerski, Vladan
AU  - Mentus, Slavko
PY  - 2003
UR  - http://dais.sanu.ac.rs/123456789/3909
AB  - Glycine-nitrate method was used to synthesize lithium manganese oxides. For the molar ratio of lithium-to-manganese in precursor solution equal to 1:2 spinel LiMn2O4 was obtained. For molar ratio of 1:1 a mixture of Li2MnO3 and spinel phase different from LiMn2O4 was observed.
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Synthesis of LiMn2O4 by glycine-nitrate method
SP  - 343
EP  - 346
VL  - 5
IS  - 1
ER  - 
@article{
author = "Jugović, Dragana and Cvjetićanin, Nikola and Kusigerski, Vladan and Mentus, Slavko",
year = "2003",
url = "http://dais.sanu.ac.rs/123456789/3909",
abstract = "Glycine-nitrate method was used to synthesize lithium manganese oxides. For the molar ratio of lithium-to-manganese in precursor solution equal to 1:2 spinel LiMn2O4 was obtained. For molar ratio of 1:1 a mixture of Li2MnO3 and spinel phase different from LiMn2O4 was observed.",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Synthesis of LiMn2O4 by glycine-nitrate method",
pages = "343-346",
volume = "5",
number = "1"
}
10