Gojković, S.

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5b83edce-19d9-4920-b13a-524fc87ec421
  • Gojković, S. (1)
  • Gojković, Suzana (1)
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Author's Bibliography

Morphology and capacitive properties of [RuOxH y/low-surface area carbon black] composite materials prepared by sol-gel procedure

Panić, Vladimir; Dekanski, Aleksandar; Gojković, S.; Milonjić, Slobodan K.; Mišković-Stanković, Vesna; Nikolić, B.

(2005)

TY  - CONF
AU  - Panić, Vladimir
AU  - Dekanski, Aleksandar
AU  - Gojković, S.
AU  - Milonjić, Slobodan K.
AU  - Mišković-Stanković, Vesna
AU  - Nikolić, B.
PY  - 2005
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/225
AB  - The morphology and the capacitive properties of carbon supported hydrous ruthenium oxide (RuOxHy/C), prepared by impregnation of low-surface area carbon black Vulcan® XC-72 R with solid phase of RuO xHy sol, were investigated by scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The oxide sols of different ageing times, prepared by forced hydrolysis of RuCl 3, were used for composite preparation. The prepared composites show considerably higher capacitance values in acid electrolyte if compared to carbon black support. Microscopic investigations show that the extent of impregnation and the composite surface appearance depend on ageing time. The composite capacitance increases with ageing time of oxide sol. A gradual decrease in capacitance of thermally untreated composite with charging/discharging cycles was registered, which appears to be related to the extent of impregnation, too. Electrochemical impedance spectroscopy measurements indicate an in-depth capacitance distribution through the composite layer. It was found that Nafion® layer, used to ensure the adhesion of the composite layer to the current collector, influenced the composite impedance behavior, especially on the oxide-rich parts of the composite surface.
C3  - Materials Science Forum
T1  - Morphology and capacitive properties of [RuOxH y/low-surface area carbon black] composite materials prepared by sol-gel procedure
VL  - 494
SP  - 235
EP  - 240
DO  - 10.4028/www.scientific.net/MSF.494.235
ER  - 
@conference{
author = "Panić, Vladimir and Dekanski, Aleksandar and Gojković, S. and Milonjić, Slobodan K. and Mišković-Stanković, Vesna and Nikolić, B.",
year = "2005",
abstract = "The morphology and the capacitive properties of carbon supported hydrous ruthenium oxide (RuOxHy/C), prepared by impregnation of low-surface area carbon black Vulcan® XC-72 R with solid phase of RuO xHy sol, were investigated by scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The oxide sols of different ageing times, prepared by forced hydrolysis of RuCl 3, were used for composite preparation. The prepared composites show considerably higher capacitance values in acid electrolyte if compared to carbon black support. Microscopic investigations show that the extent of impregnation and the composite surface appearance depend on ageing time. The composite capacitance increases with ageing time of oxide sol. A gradual decrease in capacitance of thermally untreated composite with charging/discharging cycles was registered, which appears to be related to the extent of impregnation, too. Electrochemical impedance spectroscopy measurements indicate an in-depth capacitance distribution through the composite layer. It was found that Nafion® layer, used to ensure the adhesion of the composite layer to the current collector, influenced the composite impedance behavior, especially on the oxide-rich parts of the composite surface.",
journal = "Materials Science Forum",
title = "Morphology and capacitive properties of [RuOxH y/low-surface area carbon black] composite materials prepared by sol-gel procedure",
volume = "494",
pages = "235-240",
doi = "10.4028/www.scientific.net/MSF.494.235"
}
Panić, V., Dekanski, A., Gojković, S., Milonjić, S. K., Mišković-Stanković, V.,& Nikolić, B.. (2005). Morphology and capacitive properties of [RuOxH y/low-surface area carbon black] composite materials prepared by sol-gel procedure. in Materials Science Forum, 494, 235-240.
https://doi.org/10.4028/www.scientific.net/MSF.494.235
Panić V, Dekanski A, Gojković S, Milonjić SK, Mišković-Stanković V, Nikolić B. Morphology and capacitive properties of [RuOxH y/low-surface area carbon black] composite materials prepared by sol-gel procedure. in Materials Science Forum. 2005;494:235-240.
doi:10.4028/www.scientific.net/MSF.494.235 .
Panić, Vladimir, Dekanski, Aleksandar, Gojković, S., Milonjić, Slobodan K., Mišković-Stanković, Vesna, Nikolić, B., "Morphology and capacitive properties of [RuOxH y/low-surface area carbon black] composite materials prepared by sol-gel procedure" in Materials Science Forum, 494 (2005):235-240,
https://doi.org/10.4028/www.scientific.net/MSF.494.235 . .
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The properties of carbon-supported hydrous ruthenium oxide obtained from RuOxHy sol

Panić, Vladimir; Vidaković, Tanja; Gojković, Suzana; Dekanski, Aleksandar; Milonjić, Slobodan; Nikolić, Branislav

(Elsevier, 2003)

TY  - JOUR
AU  - Panić, Vladimir
AU  - Vidaković, Tanja
AU  - Gojković, Suzana
AU  - Dekanski, Aleksandar
AU  - Milonjić, Slobodan
AU  - Nikolić, Branislav
PY  - 2003
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4091
AB  - Preparation of RuOxHy/carbon black nanocomposite material was performed by the impregnation method starting from RuOxHy sol as a precursor. Black Pearls 2000® (BP) and Vulcan® XC-72 R (XC) were used as supporting materials. Samples of the composite were calcined in nitrogen atmosphere at temperatures from 130 to 450 °C. Chemical and structural characterization of the precursor and the composites was performed by using energy-dispersive X-ray fluorescence spectroscopy (EDXRFS), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). These techniques showed that the oxide impregnated into carbon support is hydrous and amorphous. The amorphous structure is maintained if the composite is calcined up to 300 °C, while the low-intensity peak at 2θ position that corresponds to the most intensive peak of the rutile structure was registered at 450 °C. The capacitance of the composite was determined using cyclic voltammetry. It was found that the capacitance is dependent on calcination temperature and surface area of the carbon black support. The highest specific capacitance of about 700 F g−1 of composite was registered for RuOxHy supported on BP and calcined at 300 °C while four times lower values was obtained for RuOxHy supported on XC. The capacitance measurements indicated that XC-supported RuOxHy composite is highly porous while BP-supported one is more compact.
PB  - Elsevier
T2  - Electrochimica Acta
T1  - The properties of carbon-supported hydrous ruthenium oxide obtained from RuOxHy sol
VL  - 48
SP  - 3805
EP  - 3813
DO  - 10.1016/S0013-4686(03)00514-0
ER  - 
@article{
author = "Panić, Vladimir and Vidaković, Tanja and Gojković, Suzana and Dekanski, Aleksandar and Milonjić, Slobodan and Nikolić, Branislav",
year = "2003",
abstract = "Preparation of RuOxHy/carbon black nanocomposite material was performed by the impregnation method starting from RuOxHy sol as a precursor. Black Pearls 2000® (BP) and Vulcan® XC-72 R (XC) were used as supporting materials. Samples of the composite were calcined in nitrogen atmosphere at temperatures from 130 to 450 °C. Chemical and structural characterization of the precursor and the composites was performed by using energy-dispersive X-ray fluorescence spectroscopy (EDXRFS), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). These techniques showed that the oxide impregnated into carbon support is hydrous and amorphous. The amorphous structure is maintained if the composite is calcined up to 300 °C, while the low-intensity peak at 2θ position that corresponds to the most intensive peak of the rutile structure was registered at 450 °C. The capacitance of the composite was determined using cyclic voltammetry. It was found that the capacitance is dependent on calcination temperature and surface area of the carbon black support. The highest specific capacitance of about 700 F g−1 of composite was registered for RuOxHy supported on BP and calcined at 300 °C while four times lower values was obtained for RuOxHy supported on XC. The capacitance measurements indicated that XC-supported RuOxHy composite is highly porous while BP-supported one is more compact.",
publisher = "Elsevier",
journal = "Electrochimica Acta",
title = "The properties of carbon-supported hydrous ruthenium oxide obtained from RuOxHy sol",
volume = "48",
pages = "3805-3813",
doi = "10.1016/S0013-4686(03)00514-0"
}
Panić, V., Vidaković, T., Gojković, S., Dekanski, A., Milonjić, S.,& Nikolić, B.. (2003). The properties of carbon-supported hydrous ruthenium oxide obtained from RuOxHy sol. in Electrochimica Acta
Elsevier., 48, 3805-3813.
https://doi.org/10.1016/S0013-4686(03)00514-0
Panić V, Vidaković T, Gojković S, Dekanski A, Milonjić S, Nikolić B. The properties of carbon-supported hydrous ruthenium oxide obtained from RuOxHy sol. in Electrochimica Acta. 2003;48:3805-3813.
doi:10.1016/S0013-4686(03)00514-0 .
Panić, Vladimir, Vidaković, Tanja, Gojković, Suzana, Dekanski, Aleksandar, Milonjić, Slobodan, Nikolić, Branislav, "The properties of carbon-supported hydrous ruthenium oxide obtained from RuOxHy sol" in Electrochimica Acta, 48 (2003):3805-3813,
https://doi.org/10.1016/S0013-4686(03)00514-0 . .
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