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

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2005
Authors
Panić, Vladimir
Dekanski, Aleksandar
Gojković, Snežana Lj.
Milonjić, Slobodan K.
Mišković-Stanković, Vesna
Nikolic, B
Article (Published version)
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Abstract
The morphology and the capacitive properties of carbon supported hydrous ruthenium oxide (RuOxHy/C), prepared by impregnation of low-surface area carbon black Vulcano (R) XC-72 R with solid phase of RuOxHy 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 RuCl3, 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 (R) 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.

Keywords:
carbon supported ruthenium oxide / cyclic voltammetry / electrochemical impedance spectroscopy / forced hydrolysis / RuO2 sol / scanning electron microscopy / supercapacitors
Source:
Current Research in Advanced Materials and Processes, 2005, 494, 235-240
Publisher:
  • Trans Tech Publications Ltd, Durnten-Zurich

DOI: 10.4028/www.scientific.net/MSF.494.235

ISSN: 0255-5476

WoS: 000230985800039

[ Google Scholar ]
9
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/193
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Panić, Vladimir
AU  - Dekanski, Aleksandar
AU  - Gojković, Snežana Lj.
AU  - Milonjić, Slobodan K.
AU  - Mišković-Stanković, Vesna
AU  - Nikolic, B
PY  - 2005
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/193
AB  - The morphology and the capacitive properties of carbon supported hydrous ruthenium oxide (RuOxHy/C), prepared by impregnation of low-surface area carbon black Vulcano (R) XC-72 R with solid phase of RuOxHy 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 RuCl3, 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 (R) 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.
PB  - Trans Tech Publications Ltd, Durnten-Zurich
T2  - Current Research in Advanced Materials and Processes
T1  - Morphology and capacitive properties of [RuOxHy/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  - 
@article{
author = "Panić, Vladimir and Dekanski, Aleksandar and Gojković, Snežana Lj. and Milonjić, Slobodan K. and Mišković-Stanković, Vesna and Nikolic, 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 Vulcano (R) XC-72 R with solid phase of RuOxHy 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 RuCl3, 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 (R) 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.",
publisher = "Trans Tech Publications Ltd, Durnten-Zurich",
journal = "Current Research in Advanced Materials and Processes",
title = "Morphology and capacitive properties of [RuOxHy/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. Lj., Milonjić, S. K., Mišković-Stanković, V.,& Nikolic, B.. (2005). Morphology and capacitive properties of [RuOxHy/low-surface area carbon black] composite materials prepared by sol-gel procedure. in Current Research in Advanced Materials and Processes
Trans Tech Publications Ltd, Durnten-Zurich., 494, 235-240.
https://doi.org/10.4028/www.scientific.net/MSF.494.235
Panić V, Dekanski A, Gojković SL, Milonjić SK, Mišković-Stanković V, Nikolic B. Morphology and capacitive properties of [RuOxHy/low-surface area carbon black] composite materials prepared by sol-gel procedure. in Current Research in Advanced Materials and Processes. 2005;494:235-240.
doi:10.4028/www.scientific.net/MSF.494.235 .
Panić, Vladimir, Dekanski, Aleksandar, Gojković, Snežana Lj., Milonjić, Slobodan K., Mišković-Stanković, Vesna, Nikolic, B, "Morphology and capacitive properties of [RuOxHy/low-surface area carbon black] composite materials prepared by sol-gel procedure" in Current Research in Advanced Materials and Processes, 494 (2005):235-240,
https://doi.org/10.4028/www.scientific.net/MSF.494.235 . .

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