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

Authorized Users Only
2005
Authors
Panić, V
Dekanski, Aleksandar
Gojković, Snežana
Milonjić, Slobodan K.
Mišković-Stanković, Vesna
Nikolić, Branislav Ž.
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:
Materials Science Forum, 2005, 494, 235-240
Publisher:
  • 6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes

DOI: 10.4028/0-87849-971-7.235

ISSN: 0255-5476

PubMed:

WoS: 000230985800039

Scopus: 2-s2.0-33646767228
[ Google Scholar ]
10
9
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/858
Collections
  • Radovi istraživača / Researchers’ publications (TMF)
Institution/Community
Tehnološko-metalurški fakultet
TY  - JOUR
AU  - Panić, V
AU  - Dekanski, Aleksandar
AU  - Gojković, Snežana
AU  - Milonjić, Slobodan K.
AU  - Mišković-Stanković, Vesna
AU  - Nikolić, Branislav Ž.
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/858
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  - 6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes
T2  - Materials Science Forum
T1  - Morphology and capacitive properties of [RuOxHy/low-surface area carbon black] composite materials prepared by sol-gel procedure
EP  - 240
SP  - 235
VL  - 494
DO  - 10.4028/0-87849-971-7.235
ER  - 
@article{
author = "Panić, V and Dekanski, Aleksandar and Gojković, Snežana and Milonjić, Slobodan K. and Mišković-Stanković, Vesna and Nikolić, Branislav Ž.",
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 = "6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes",
journal = "Materials Science Forum",
title = "Morphology and capacitive properties of [RuOxHy/low-surface area carbon black] composite materials prepared by sol-gel procedure",
pages = "240-235",
volume = "494",
doi = "10.4028/0-87849-971-7.235"
}
Panić, V., Dekanski, A., Gojković, S., Milonjić, S. K., Mišković-Stanković, V.,& Nikolić, B. Ž.. (2005). Morphology and capacitive properties of [RuOxHy/low-surface area carbon black] composite materials prepared by sol-gel procedure. in Materials Science Forum
6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes., 494, 235-240.
https://doi.org/10.4028/0-87849-971-7.235
Panić V, Dekanski A, Gojković S, Milonjić SK, Mišković-Stanković V, Nikolić BŽ. Morphology and capacitive properties of [RuOxHy/low-surface area carbon black] composite materials prepared by sol-gel procedure. in Materials Science Forum. 2005;494:235-240.
doi:10.4028/0-87849-971-7.235 .
Panić, V, Dekanski, Aleksandar, Gojković, Snežana, Milonjić, Slobodan K., Mišković-Stanković, Vesna, Nikolić, Branislav Ž., "Morphology and capacitive properties of [RuOxHy/low-surface area carbon black] composite materials prepared by sol-gel procedure" in Materials Science Forum, 494 (2005):235-240,
https://doi.org/10.4028/0-87849-971-7.235 . .

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