Morphology and capacitive properties of [RuOxH y/low-surface area carbon black] composite materials prepared by sol-gel procedure
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2005
Authors
Panić, VladimirDekanski, Aleksandar
Gojković, S.
Milonjić, Slobodan K.
Mišković-Stanković, Vesna
Nikolić, B.
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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 a...n 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.
Keywords:
Carbon supported ruthenium oxide / Cyclic voltammetry / Electrochemical impedance spectroscopy / Forced hydrolysis / RuO2 sol / Scanning electron microscopy / SupercapacitorsSource:
Materials Science Forum, 2005, 494, 235-240Note:
- 6th Conference of the Yugoslav-Materials-Research-Society, Herceg Novi, SEP 13-17, 2004
DOI: 10.4028/www.scientific.net/MSF.494.235
ISSN: 0255-5476
WoS: 000230985800039
Scopus: 2-s2.0-33646767228
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IHTMTY - 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 . .