DAAD, Germany, Project No.: 57334757

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DAAD, Germany, Project No.: 57334757

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

Pavlović, Miroslav M.; Pantović Pavlović, Marijana; Eraković Pantović, Sanja G.; Stevanović, Jasmina S.; Stopić, Srećko R.; Friedrich, Bernd; Panić, Vladimir

(Elsevier, 2021)

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 . .
4
4

Promotion of Supercapacitance of Novel Generation Supercapacitors Based on Lanthanum Strontium Cobalt Oxide and Hydrotermal Ruthenium Oxide

Pavlović, Miroslav; Eraković, Sanja; Stopić, Srećko; Friedrich, Bernd; Stevanović, Jasmina; Panić, Vladimir

(Zvornik, Republic of Srpska, B&H : Faculty of Technology, 2019)

TY  - CONF
AU  - Pavlović, Miroslav
AU  - Eraković, Sanja
AU  - Stopić, Srećko
AU  - Friedrich, Bernd
AU  - Stevanović, Jasmina
AU  - Panić, Vladimir
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6618
AB  - In this study we report of considerable promotion of supercapacitive performances of ruthenium oxide hosted by perovskite-like structure of rare earth–CoO3 composite and vice versa. Spherical, sub-µm-sized, regular spheres of La0.6Sr0.4CoO3 (LSCO) were synthesized by ultrasonic spray pyrolysis (USP). 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 scanning electron microscopy (SEM) and X-ray diffraction (XRD). It was found that amorphous Ru species decorate the surface of LSCO spheres, and possibly incorporate partially into a B-site of the LSCO lattice. Electrochemical characterization by cyclic voltammetry (CV) clearly revealed that capacitive performances of LSCO are considerably improved by 20 mass% addition of RuO2. The registered capacitance for LSCO/RuO2 reaches the values of USP-synthesized pure RuO2, which reveals the promoting influence of LSCO on RuO2 pseudocapacitance. This intrinsic interactive promotion introduces the LSCO/RuO2 composite as a unique supercapacitive material.
PB  - Zvornik, Republic of Srpska, B&H : Faculty of Technology
C3  - Book of Abstracts - VI International Congress Engineering, Environment and Materials in Processing Industry, March 11-13, Jahorina, Republic of Srpska, Bosnia and Herzegovina
T1  - Promotion of Supercapacitance of Novel Generation Supercapacitors Based on Lanthanum Strontium Cobalt Oxide and Hydrotermal Ruthenium Oxide
SP  - 620
EP  - 629
UR  - https://hdl.handle.net/21.15107/rcub_cer_6618
ER  - 
@conference{
author = "Pavlović, Miroslav and Eraković, Sanja and Stopić, Srećko and Friedrich, Bernd and Stevanović, Jasmina and Panić, Vladimir",
year = "2019",
abstract = "In this study we report of considerable promotion of supercapacitive performances of ruthenium oxide hosted by perovskite-like structure of rare earth–CoO3 composite and vice versa. Spherical, sub-µm-sized, regular spheres of La0.6Sr0.4CoO3 (LSCO) were synthesized by ultrasonic spray pyrolysis (USP). 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 scanning electron microscopy (SEM) and X-ray diffraction (XRD). It was found that amorphous Ru species decorate the surface of LSCO spheres, and possibly incorporate partially into a B-site of the LSCO lattice. Electrochemical characterization by cyclic voltammetry (CV) clearly revealed that capacitive performances of LSCO are considerably improved by 20 mass% addition of RuO2. The registered capacitance for LSCO/RuO2 reaches the values of USP-synthesized pure RuO2, which reveals the promoting influence of LSCO on RuO2 pseudocapacitance. This intrinsic interactive promotion introduces the LSCO/RuO2 composite as a unique supercapacitive material.",
publisher = "Zvornik, Republic of Srpska, B&H : Faculty of Technology",
journal = "Book of Abstracts - VI International Congress Engineering, Environment and Materials in Processing Industry, March 11-13, Jahorina, Republic of Srpska, Bosnia and Herzegovina",
title = "Promotion of Supercapacitance of Novel Generation Supercapacitors Based on Lanthanum Strontium Cobalt Oxide and Hydrotermal Ruthenium Oxide",
pages = "620-629",
url = "https://hdl.handle.net/21.15107/rcub_cer_6618"
}
Pavlović, M., Eraković, S., Stopić, S., Friedrich, B., Stevanović, J.,& Panić, V.. (2019). Promotion of Supercapacitance of Novel Generation Supercapacitors Based on Lanthanum Strontium Cobalt Oxide and Hydrotermal Ruthenium Oxide. in Book of Abstracts - VI International Congress Engineering, Environment and Materials in Processing Industry, March 11-13, Jahorina, Republic of Srpska, Bosnia and Herzegovina
Zvornik, Republic of Srpska, B&H : Faculty of Technology., 620-629.
https://hdl.handle.net/21.15107/rcub_cer_6618
Pavlović M, Eraković S, Stopić S, Friedrich B, Stevanović J, Panić V. Promotion of Supercapacitance of Novel Generation Supercapacitors Based on Lanthanum Strontium Cobalt Oxide and Hydrotermal Ruthenium Oxide. in Book of Abstracts - VI International Congress Engineering, Environment and Materials in Processing Industry, March 11-13, Jahorina, Republic of Srpska, Bosnia and Herzegovina. 2019;:620-629.
https://hdl.handle.net/21.15107/rcub_cer_6618 .
Pavlović, Miroslav, Eraković, Sanja, Stopić, Srećko, Friedrich, Bernd, Stevanović, Jasmina, Panić, Vladimir, "Promotion of Supercapacitance of Novel Generation Supercapacitors Based on Lanthanum Strontium Cobalt Oxide and Hydrotermal Ruthenium Oxide" in Book of Abstracts - VI International Congress Engineering, Environment and Materials in Processing Industry, March 11-13, Jahorina, Republic of Srpska, Bosnia and Herzegovina (2019):620-629,
https://hdl.handle.net/21.15107/rcub_cer_6618 .