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The roles of constituting oxides in rare-earth cobaltite-based perovskites on their pseudocapacitive behavior

Authorized Users Only
2021
Authors
Pavlović, Miroslav M.
Pantović Pavlović, Marijana
Eraković Pantović, Sanja G.
Stevanović, Jasmina S.
Stopić, Srećko R.
Friedrich, Bernd
Panić, Vladimir
Article (Published version)
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Abstract
The role and influence of strontium and its oxide on structure and capacitive response of materials containing mixed lanthanum cobalt oxides, LC, and lanthanum strontium cobalt oxides, LSC, as a capacitive materials were investigated in this study. The mixed oxides were synthesized by the single-step ultrasonic spray pyrolysis (USP) technique. The microstructures and electrochemical properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, cyclic voltammetry, potentiostatic electrochemical impedance spectroscopy and galvanostatic charge/discharge cycling. It was found that strontium oxide induces the formation of the perovskite structure of promoted pseudocapacitive behavior over an enhancement of redox transitions of cobalt. The measurements showed that the capacitive stability and rate capability were lower for the samples of higher specific capacitance. Among the prepared materials, the LSC prepared at a USP temperature 600 °C showed the best c...apacitive characteristics in 0.10 M KOH due to having the most defined spherical perovskite structure leading to well-defined reversible charge–discharge performances.

Keywords:
Capacitive interactivity / Capacitor electrodes / Oxide composites / Strontium oxide in mixed capacitive materials
Source:
Journal of Electroanalytical Chemistry, 2021, 897, 115556-
Publisher:
  • Elsevier
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-200026)
  • DAAD, Germany, Project No.: 57334757

DOI: 10.1016/j.jelechem.2021.115556

ISSN: 1572-6657; 1873-2569

WoS: 000693029200011

Scopus: 2-s2.0-85111339111
[ Google Scholar ]
2
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/4792
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Pavlović, Miroslav M.
AU  - Pantović Pavlović, Marijana
AU  - Eraković Pantović, Sanja G.
AU  - Stevanović, Jasmina S.
AU  - Stopić, Srećko R.
AU  - Friedrich, Bernd
AU  - Panić, Vladimir
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4792
AB  - The role and influence of strontium and its oxide on structure and capacitive response of materials containing mixed lanthanum cobalt oxides, LC, and lanthanum strontium cobalt oxides, LSC, as a capacitive materials were investigated in this study. The mixed oxides were synthesized by the single-step ultrasonic spray pyrolysis (USP) technique. The microstructures and electrochemical properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, cyclic voltammetry, potentiostatic electrochemical impedance spectroscopy and galvanostatic charge/discharge cycling. It was found that strontium oxide induces the formation of the perovskite structure of promoted pseudocapacitive behavior over an enhancement of redox transitions of cobalt. The measurements showed that the capacitive stability and rate capability were lower for the samples of higher specific capacitance. Among the prepared materials, the LSC prepared at a USP temperature 600 °C showed the best capacitive characteristics in 0.10 M KOH due to having the most defined spherical perovskite structure leading to well-defined reversible charge–discharge performances.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - The roles of constituting oxides in rare-earth cobaltite-based perovskites on their pseudocapacitive behavior
VL  - 897
SP  - 115556
DO  - 10.1016/j.jelechem.2021.115556
ER  - 
@article{
author = "Pavlović, Miroslav M. and Pantović Pavlović, Marijana and Eraković Pantović, Sanja G. and Stevanović, Jasmina S. and Stopić, Srećko R. and Friedrich, Bernd and Panić, Vladimir",
year = "2021",
abstract = "The role and influence of strontium and its oxide on structure and capacitive response of materials containing mixed lanthanum cobalt oxides, LC, and lanthanum strontium cobalt oxides, LSC, as a capacitive materials were investigated in this study. The mixed oxides were synthesized by the single-step ultrasonic spray pyrolysis (USP) technique. The microstructures and electrochemical properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, cyclic voltammetry, potentiostatic electrochemical impedance spectroscopy and galvanostatic charge/discharge cycling. It was found that strontium oxide induces the formation of the perovskite structure of promoted pseudocapacitive behavior over an enhancement of redox transitions of cobalt. The measurements showed that the capacitive stability and rate capability were lower for the samples of higher specific capacitance. Among the prepared materials, the LSC prepared at a USP temperature 600 °C showed the best capacitive characteristics in 0.10 M KOH due to having the most defined spherical perovskite structure leading to well-defined reversible charge–discharge performances.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "The roles of constituting oxides in rare-earth cobaltite-based perovskites on their pseudocapacitive behavior",
volume = "897",
pages = "115556",
doi = "10.1016/j.jelechem.2021.115556"
}
Pavlović, M. M., Pantović Pavlović, M., Eraković Pantović, S. G., Stevanović, J. S., Stopić, S. R., Friedrich, B.,& Panić, V.. (2021). The roles of constituting oxides in rare-earth cobaltite-based perovskites on their pseudocapacitive behavior. in Journal of Electroanalytical Chemistry
Elsevier., 897, 115556.
https://doi.org/10.1016/j.jelechem.2021.115556
Pavlović MM, Pantović Pavlović M, Eraković Pantović SG, Stevanović JS, Stopić SR, Friedrich B, Panić V. The roles of constituting oxides in rare-earth cobaltite-based perovskites on their pseudocapacitive behavior. in Journal of Electroanalytical Chemistry. 2021;897:115556.
doi:10.1016/j.jelechem.2021.115556 .
Pavlović, Miroslav M., Pantović Pavlović, Marijana, Eraković Pantović, Sanja G., Stevanović, Jasmina S., Stopić, Srećko R., Friedrich, Bernd, Panić, Vladimir, "The roles of constituting oxides in rare-earth cobaltite-based perovskites on their pseudocapacitive behavior" in Journal of Electroanalytical Chemistry, 897 (2021):115556,
https://doi.org/10.1016/j.jelechem.2021.115556 . .

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