Considerable promotion of RuO2 hosted by perovskite-like structure of rare eartheCoO3 composite and
vice versa supercapacitive performances is reported. Spherical, sub-mm-sized, regular spheres of
La0.6Sr0.4CoO3 (LSCO), were synthesized by ultrasonic spray pyrolysis. The sphere surface was subsequently
hydrothermally doped by RuO2. LSCO and LSCO/RuO2 composites were investigated for their
supercapacitive performances in alkaline solution. Microstructure and surface morphology were studied
by SEM and XRD. It was found that amorphous Ru species decorate LSCO surface, and possibly incorporate
partially into B-site of the LSCO lattice. Electrochemical characterization by cyclic voltammetry
(CV), galvanostatic charge-discharge (G-C/DC) and electrochemical impedance spectroscopy (EIS) clearly
revealed that capacitive performances of LSCO are considerably improved by addition of 20 mass. % of
RuO2. The registered capacitance for LSCO/RuO2 reaches the values of pure RuO2, which reveal...s the
promoting influence of LSCO on RuO2 pseudocapacitance. The EIS analysis showed that RuO2 catalyzes
the redox transition of Co species, with simultaneous proportional increase in pseudocapacitive RuO2
abilities while being hosted by LSCO. This intrinsic interactive promotion introduces LSCO/RuO2 composite
as unique supercapacitive material. G-C/DC curves showed that LSCO/RuO2 is of modest cyclability
with respect to pure LSCO and RuO2, although the capacitance losses with cycling are acceptably low.
TY - JOUR
AU - Eraković, Sanja
AU - Pavlović, Miroslav M.
AU - Stopić, Srećko
AU - Stevanović, Jasmina
AU - Mitrić, Miodrag
AU - Friedrich, Bernd
AU - Panić, Vladimir
PY - 2019
UR - http://cer.ihtm.bg.ac.rs/handle/123456789/3207
AB - Considerable promotion of RuO2 hosted by perovskite-like structure of rare eartheCoO3 composite and
vice versa supercapacitive performances is reported. Spherical, sub-mm-sized, regular spheres of
La0.6Sr0.4CoO3 (LSCO), were synthesized by ultrasonic spray pyrolysis. The sphere surface was subsequently
hydrothermally doped by RuO2. LSCO and LSCO/RuO2 composites were investigated for their
supercapacitive performances in alkaline solution. Microstructure and surface morphology were studied
by SEM and XRD. It was found that amorphous Ru species decorate LSCO surface, and possibly incorporate
partially into B-site of the LSCO lattice. Electrochemical characterization by cyclic voltammetry
(CV), galvanostatic charge-discharge (G-C/DC) and electrochemical impedance spectroscopy (EIS) clearly
revealed that capacitive performances of LSCO are considerably improved by addition of 20 mass. % of
RuO2. The registered capacitance for LSCO/RuO2 reaches the values of pure RuO2, which reveals the
promoting influence of LSCO on RuO2 pseudocapacitance. The EIS analysis showed that RuO2 catalyzes
the redox transition of Co species, with simultaneous proportional increase in pseudocapacitive RuO2
abilities while being hosted by LSCO. This intrinsic interactive promotion introduces LSCO/RuO2 composite
as unique supercapacitive material. G-C/DC curves showed that LSCO/RuO2 is of modest cyclability
with respect to pure LSCO and RuO2, although the capacitance losses with cycling are acceptably low.
PB - Elsevier
T2 - Electrochimica Acta
T1 - Interactive promotion of supercapacitance of rare earth/CoO3-based spray pyrolytic perovskite microspheres hosting the hydrothermal ruthenium oxide
VL - 321
SP - 134721
DO - 10.1016/j.electacta.2019.134721
ER -
@article{
author = "Eraković, Sanja and Pavlović, Miroslav M. and Stopić, Srećko and Stevanović, Jasmina and Mitrić, Miodrag and Friedrich, Bernd and Panić, Vladimir",
year = "2019",
url = "http://cer.ihtm.bg.ac.rs/handle/123456789/3207",
abstract = "Considerable promotion of RuO2 hosted by perovskite-like structure of rare eartheCoO3 composite and
vice versa supercapacitive performances is reported. Spherical, sub-mm-sized, regular spheres of
La0.6Sr0.4CoO3 (LSCO), were synthesized by ultrasonic spray pyrolysis. The sphere surface was subsequently
hydrothermally doped by RuO2. LSCO and LSCO/RuO2 composites were investigated for their
supercapacitive performances in alkaline solution. Microstructure and surface morphology were studied
by SEM and XRD. It was found that amorphous Ru species decorate LSCO surface, and possibly incorporate
partially into B-site of the LSCO lattice. Electrochemical characterization by cyclic voltammetry
(CV), galvanostatic charge-discharge (G-C/DC) and electrochemical impedance spectroscopy (EIS) clearly
revealed that capacitive performances of LSCO are considerably improved by addition of 20 mass. % of
RuO2. The registered capacitance for LSCO/RuO2 reaches the values of pure RuO2, which reveals the
promoting influence of LSCO on RuO2 pseudocapacitance. The EIS analysis showed that RuO2 catalyzes
the redox transition of Co species, with simultaneous proportional increase in pseudocapacitive RuO2
abilities while being hosted by LSCO. This intrinsic interactive promotion introduces LSCO/RuO2 composite
as unique supercapacitive material. G-C/DC curves showed that LSCO/RuO2 is of modest cyclability
with respect to pure LSCO and RuO2, although the capacitance losses with cycling are acceptably low.",
publisher = "Elsevier",
journal = "Electrochimica Acta",
title = "Interactive promotion of supercapacitance of rare earth/CoO3-based spray pyrolytic perovskite microspheres hosting the hydrothermal ruthenium oxide",
volume = "321",
pages = "134721",
doi = "10.1016/j.electacta.2019.134721"
}
Eraković, S., Pavlović, M. M., Stopić, S., Stevanović, J., Mitrić, M., Friedrich, B.,& Panić, V. (2019). Interactive promotion of supercapacitance of rare earth/CoO3-based spray pyrolytic perovskite microspheres hosting the hydrothermal ruthenium oxide.
Electrochimica Acta
Elsevier., 321, 134721.
https://doi.org/10.1016/j.electacta.2019.134721
Eraković S, Pavlović MM, Stopić S, Stevanović J, Mitrić M, Friedrich B, Panić V. Interactive promotion of supercapacitance of rare earth/CoO3-based spray pyrolytic perovskite microspheres hosting the hydrothermal ruthenium oxide. Electrochimica Acta. 2019;321:134721
Eraković Sanja, Pavlović Miroslav M., Stopić Srećko, Stevanović Jasmina, Mitrić Miodrag, Friedrich Bernd, Panić Vladimir, "Interactive promotion of supercapacitance of rare earth/CoO3-based spray pyrolytic perovskite microspheres hosting the hydrothermal ruthenium oxide" Electrochimica Acta, 321 (2019):134721,
https://doi.org/10.1016/j.electacta.2019.134721 .
