Laušević, Petar

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  • Laušević, Petar (11)

Author's Bibliography

In-situ grafting of Fe and Cu nanoparticles on carbon for electrolytic hydrogen production

Georgijević, Jelena M.; Milikić, Jadranka; Zdolšek, Nikola; Brković, Snežana; Perović, Ivana; Laušević, Petar; Šljukić, Biljana

(Belgrade : Serbian Chemical Society, 2023)

TY  - CONF
AU  - Georgijević, Jelena M.
AU  - Milikić, Jadranka
AU  - Zdolšek, Nikola
AU  - Brković, Snežana
AU  - Perović, Ivana
AU  - Laušević, Petar
AU  - Šljukić, Biljana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12771
AB  - In order to reduce air pollution by green-house gases released during fossil fuels combustion, hydrogen has been suggested as an alternative, clean fuel [1]. The most promising method of obtaining green hydrogen (and oxygen) is electrolytic water splitting [2]. For splitting process to be efficient, it is necessary to useelectrocatalysts with high activity, but they should also be economically accessible. Ionic liquids are used in the most diverse fields of sciencedue to their unique physical and chemical properties, and in this regard, they can be used for the development of electrocatalystsby direct carbonization [3].  Within this study, carbon catalysts doped with iron and copper (Fe/C, Cu/C and FeCu/C) were prepared by carbonization of ionic liquids containing the corresponding metal and characterized for the hydrogen evolution reaction (HER) in alkaline (8 M KOH) media. Electrochemical measurements were made by cyclic voltammetry (CV), linear cyclic voltammetry (LSV), electrochemical impedance spectroscopy (EIS) and chronoamperometry (CA). All electrocatalysts showed good activity for HER. Tafel slope (b) values of -132, 155 and -151 mV dec-1 (Table 1) were obtained for HER at 25 oC for Fe/C, Cu/C and FeCu/C, respectively. Also, the exchange current density (j0) was determined and the values ranged from 1.28 to 2.94 10-2 mAcm-2. The results (Table 1) show that Fe/C, Cu/C and FeCu/Care promisingelectrocatalysts for hydrogen gas production by water splitting.
PB  - Belgrade : Serbian Chemical Society
C3  - 9th Symposium Chemistry and Environmental Protection : Book of Abstracts
T1  - In-situ grafting of Fe and Cu nanoparticles on carbon for electrolytic hydrogen production
SP  - 141
EP  - 142
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12771
ER  - 
@conference{
author = "Georgijević, Jelena M. and Milikić, Jadranka and Zdolšek, Nikola and Brković, Snežana and Perović, Ivana and Laušević, Petar and Šljukić, Biljana",
year = "2023",
abstract = "In order to reduce air pollution by green-house gases released during fossil fuels combustion, hydrogen has been suggested as an alternative, clean fuel [1]. The most promising method of obtaining green hydrogen (and oxygen) is electrolytic water splitting [2]. For splitting process to be efficient, it is necessary to useelectrocatalysts with high activity, but they should also be economically accessible. Ionic liquids are used in the most diverse fields of sciencedue to their unique physical and chemical properties, and in this regard, they can be used for the development of electrocatalystsby direct carbonization [3].  Within this study, carbon catalysts doped with iron and copper (Fe/C, Cu/C and FeCu/C) were prepared by carbonization of ionic liquids containing the corresponding metal and characterized for the hydrogen evolution reaction (HER) in alkaline (8 M KOH) media. Electrochemical measurements were made by cyclic voltammetry (CV), linear cyclic voltammetry (LSV), electrochemical impedance spectroscopy (EIS) and chronoamperometry (CA). All electrocatalysts showed good activity for HER. Tafel slope (b) values of -132, 155 and -151 mV dec-1 (Table 1) were obtained for HER at 25 oC for Fe/C, Cu/C and FeCu/C, respectively. Also, the exchange current density (j0) was determined and the values ranged from 1.28 to 2.94 10-2 mAcm-2. The results (Table 1) show that Fe/C, Cu/C and FeCu/Care promisingelectrocatalysts for hydrogen gas production by water splitting.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "9th Symposium Chemistry and Environmental Protection : Book of Abstracts",
title = "In-situ grafting of Fe and Cu nanoparticles on carbon for electrolytic hydrogen production",
pages = "141-142",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12771"
}
Georgijević, J. M., Milikić, J., Zdolšek, N., Brković, S., Perović, I., Laušević, P.,& Šljukić, B.. (2023). In-situ grafting of Fe and Cu nanoparticles on carbon for electrolytic hydrogen production. in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts
Belgrade : Serbian Chemical Society., 141-142.
https://hdl.handle.net/21.15107/rcub_vinar_12771
Georgijević JM, Milikić J, Zdolšek N, Brković S, Perović I, Laušević P, Šljukić B. In-situ grafting of Fe and Cu nanoparticles on carbon for electrolytic hydrogen production. in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts. 2023;:141-142.
https://hdl.handle.net/21.15107/rcub_vinar_12771 .
Georgijević, Jelena M., Milikić, Jadranka, Zdolšek, Nikola, Brković, Snežana, Perović, Ivana, Laušević, Petar, Šljukić, Biljana, "In-situ grafting of Fe and Cu nanoparticles on carbon for electrolytic hydrogen production" in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts (2023):141-142,
https://hdl.handle.net/21.15107/rcub_vinar_12771 .

Enhanced Catalytic Activity and Energy Savings with Ni-Zn-Mo Ionic Activators for Hydrogen Evolution in Alkaline Electrolysis

Perović, Ivana; Marčeta Kaninski, Milica; Tasić, Gvozden; Maslovara, Slađana Lj.; Laušević, Petar; Seović, Mina; Nikolić, Vladimir

(2023)

TY  - JOUR
AU  - Perović, Ivana
AU  - Marčeta Kaninski, Milica
AU  - Tasić, Gvozden
AU  - Maslovara, Slađana Lj.
AU  - Laušević, Petar
AU  - Seović, Mina
AU  - Nikolić, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11435
AB  - Green hydrogen produced by alkaline electrolysis is a promising solution to address the world’s increasing energy demand while mitigating greenhouse gas emissions. However, the efficient and cost-effective production of green hydrogen via alkaline electrolysis requires improvements. This paper presents an in situ activation process that simplifies the alkaline electrolysis technology while enhancing the catalytic activity of electrodes for the hydrogen evolution reaction. The aim of this research is to enhance the energy efficiency of alkaline electrolysis and decrease the energy consumption for hydrogen production. To achieve this goal, ionic activators comprising Ni, Zn, and Mo were incorporated into the standard electrolyte solution. Our results demonstrate that the anticipated improvement in the catalytic activity of the d-metal combination, surpassing even that of precious metals, has been successfully attained. As a result, a 20% reduction in energy consumption (REC) for the hydrogen produced has been observed. The catalytic activity of the added activators for the hydrogen evolution reaction was discussed by analyzing the mechanism of the reaction via Tafel analysis and EIS techniques. These findings offer a promising approach to improve alkaline electrolysis and enhance the production of green hydrogen.
T2  - Materials
T1  - Enhanced Catalytic Activity and Energy Savings with Ni-Zn-Mo Ionic Activators for Hydrogen Evolution in Alkaline Electrolysis
VL  - 16
IS  - 15
SP  - 5268
DO  - 10.3390/ma16155268
ER  - 
@article{
author = "Perović, Ivana and Marčeta Kaninski, Milica and Tasić, Gvozden and Maslovara, Slađana Lj. and Laušević, Petar and Seović, Mina and Nikolić, Vladimir",
year = "2023",
abstract = "Green hydrogen produced by alkaline electrolysis is a promising solution to address the world’s increasing energy demand while mitigating greenhouse gas emissions. However, the efficient and cost-effective production of green hydrogen via alkaline electrolysis requires improvements. This paper presents an in situ activation process that simplifies the alkaline electrolysis technology while enhancing the catalytic activity of electrodes for the hydrogen evolution reaction. The aim of this research is to enhance the energy efficiency of alkaline electrolysis and decrease the energy consumption for hydrogen production. To achieve this goal, ionic activators comprising Ni, Zn, and Mo were incorporated into the standard electrolyte solution. Our results demonstrate that the anticipated improvement in the catalytic activity of the d-metal combination, surpassing even that of precious metals, has been successfully attained. As a result, a 20% reduction in energy consumption (REC) for the hydrogen produced has been observed. The catalytic activity of the added activators for the hydrogen evolution reaction was discussed by analyzing the mechanism of the reaction via Tafel analysis and EIS techniques. These findings offer a promising approach to improve alkaline electrolysis and enhance the production of green hydrogen.",
journal = "Materials",
title = "Enhanced Catalytic Activity and Energy Savings with Ni-Zn-Mo Ionic Activators for Hydrogen Evolution in Alkaline Electrolysis",
volume = "16",
number = "15",
pages = "5268",
doi = "10.3390/ma16155268"
}
Perović, I., Marčeta Kaninski, M., Tasić, G., Maslovara, S. Lj., Laušević, P., Seović, M.,& Nikolić, V.. (2023). Enhanced Catalytic Activity and Energy Savings with Ni-Zn-Mo Ionic Activators for Hydrogen Evolution in Alkaline Electrolysis. in Materials, 16(15), 5268.
https://doi.org/10.3390/ma16155268
Perović I, Marčeta Kaninski M, Tasić G, Maslovara SL, Laušević P, Seović M, Nikolić V. Enhanced Catalytic Activity and Energy Savings with Ni-Zn-Mo Ionic Activators for Hydrogen Evolution in Alkaline Electrolysis. in Materials. 2023;16(15):5268.
doi:10.3390/ma16155268 .
Perović, Ivana, Marčeta Kaninski, Milica, Tasić, Gvozden, Maslovara, Slađana Lj., Laušević, Petar, Seović, Mina, Nikolić, Vladimir, "Enhanced Catalytic Activity and Energy Savings with Ni-Zn-Mo Ionic Activators for Hydrogen Evolution in Alkaline Electrolysis" in Materials, 16, no. 15 (2023):5268,
https://doi.org/10.3390/ma16155268 . .

Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells

Brković, Snežana; Marčeta Kaninski, Milica; Perović, Ivana; Maslovara, Slađana; Zdolšek, Nikola; Laušević, Petar; Nikolić, Vladimir

(Belgrade : Serbian Ceramic Society, 2023)

TY  - CONF
AU  - Brković, Snežana
AU  - Marčeta Kaninski, Milica
AU  - Perović, Ivana
AU  - Maslovara, Slađana
AU  - Zdolšek, Nikola
AU  - Laušević, Petar
AU  - Nikolić, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11636
AB  - A significant research efforts are directed towards the development of compact energy supply devices, so-called stacks of fuel cells, which might be located near or at the point of energy consumption. For widespread use, the most practical are fuel cells with proton exchange membrane, which produce clean electricity, heat and water, at low temperatures. The price of the catalyst limits the mass production and large-scale utilization of fuel cells. Within our research, non-stoichiometric tungsten-carbide-oxide (WxCyOz) were developed as support for catalysts based on PtRu for PEM fuel cells. The conductivity, morphology and structure of the synthesized catalysts were investigated. Cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry were used to determine performance of obtained PtRu/WxCyOz catalysts. Special attention was given to the analysis of CO poisoning. The catalyst with the best performance (30% PtRu/WxCyOz) has higher number of active sites for HOR and the highest interfacial region which contributes the improved CO tolerance, in relation to the other tested catalysts. By testing this catalyst as an anode catalyst in a single PEM fuel cell, a significantly lower power drop was obtained (16,3%) compared to a single fuel cell that uses commercial catalysts (35,3%). These results highlight the potential of PtRu/WxCyOz catalysts in mitigating performance degradation caused by CO poisoning in PEM fuel cells.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
T1  - Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells
SP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11636
ER  - 
@conference{
author = "Brković, Snežana and Marčeta Kaninski, Milica and Perović, Ivana and Maslovara, Slađana and Zdolšek, Nikola and Laušević, Petar and Nikolić, Vladimir",
year = "2023",
abstract = "A significant research efforts are directed towards the development of compact energy supply devices, so-called stacks of fuel cells, which might be located near or at the point of energy consumption. For widespread use, the most practical are fuel cells with proton exchange membrane, which produce clean electricity, heat and water, at low temperatures. The price of the catalyst limits the mass production and large-scale utilization of fuel cells. Within our research, non-stoichiometric tungsten-carbide-oxide (WxCyOz) were developed as support for catalysts based on PtRu for PEM fuel cells. The conductivity, morphology and structure of the synthesized catalysts were investigated. Cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry were used to determine performance of obtained PtRu/WxCyOz catalysts. Special attention was given to the analysis of CO poisoning. The catalyst with the best performance (30% PtRu/WxCyOz) has higher number of active sites for HOR and the highest interfacial region which contributes the improved CO tolerance, in relation to the other tested catalysts. By testing this catalyst as an anode catalyst in a single PEM fuel cell, a significantly lower power drop was obtained (16,3%) compared to a single fuel cell that uses commercial catalysts (35,3%). These results highlight the potential of PtRu/WxCyOz catalysts in mitigating performance degradation caused by CO poisoning in PEM fuel cells.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade",
title = "Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells",
pages = "48",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11636"
}
Brković, S., Marčeta Kaninski, M., Perović, I., Maslovara, S., Zdolšek, N., Laušević, P.,& Nikolić, V.. (2023). Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
Belgrade : Serbian Ceramic Society., 48.
https://hdl.handle.net/21.15107/rcub_vinar_11636
Brković S, Marčeta Kaninski M, Perović I, Maslovara S, Zdolšek N, Laušević P, Nikolić V. Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:48.
https://hdl.handle.net/21.15107/rcub_vinar_11636 .
Brković, Snežana, Marčeta Kaninski, Milica, Perović, Ivana, Maslovara, Slađana, Zdolšek, Nikola, Laušević, Petar, Nikolić, Vladimir, "Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):48,
https://hdl.handle.net/21.15107/rcub_vinar_11636 .

Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance

Brković, Snežana M.; Marčeta Kaninski, Milica; Laušević, Petar; Šaponjić, Aleksandra; Radulović, Aleksandra; Rakić, Aleksandra A.; Pašti, Igor A.; Nikolić, Vladimir M.

(2020)

TY  - JOUR
AU  - Brković, Snežana M.
AU  - Marčeta Kaninski, Milica
AU  - Laušević, Petar
AU  - Šaponjić, Aleksandra
AU  - Radulović, Aleksandra
AU  - Rakić, Aleksandra A.
AU  - Pašti, Igor A.
AU  - Nikolić, Vladimir M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8927
AB  - Durability and cost of Proton Exchange Membrane fuel cells (PEMFCs) are two major factors delaying their commercialization. Cost is associated with the price of the catalysts, while durability is associated with degradation and poisoning of the catalysts, primarily by CO. This motivated us to develop tungsten-carbide-oxide (WxCyOz) as a new non-carbon based catalyst support for Pt–Ru–based anode PEMFC catalyst. The aim was to improve performance and obtain higher CO tolerance compared to commercial catalysts. The performance of obtained PtRu/WxCyOz catalysts was investigated using cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry. Particular attention was given to the analysis of CO poisoning, to better understand how WxCyOz species can contribute to the CO tolerance of PtRu/WxCyOz. Improved oxidation of COads at low potentials (E < 0.5 V vs. RHE) was ascribed to OH provided by the oxide phase at the interfacial region between the support and the PtRu particles. On the other hand, at high potentials (E > 0.5 V vs. RHE) CO removal proceeds dominantly via OH provided from the oxidized metal sites. The obtained catalyst with the best performance (30% PtRu/WxCyOz) was tested as an anode catalyst in PEM fuel cell. When using synthetic reformate as a fuel in PEMFC, there is a significant power drop of 35.3 % for the commercial 30% PtRu/C catalyst, while for the PtRu/WxCyOz anode catalyst this drop is around 16 %.
T2  - International Journal of Hydrogen Energy
T1  - Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance
VL  - 45
IS  - 27
SP  - 13929
EP  - 13938
DO  - 10.1016/j.ijhydene.2020.03.086
ER  - 
@article{
author = "Brković, Snežana M. and Marčeta Kaninski, Milica and Laušević, Petar and Šaponjić, Aleksandra and Radulović, Aleksandra and Rakić, Aleksandra A. and Pašti, Igor A. and Nikolić, Vladimir M.",
year = "2020",
abstract = "Durability and cost of Proton Exchange Membrane fuel cells (PEMFCs) are two major factors delaying their commercialization. Cost is associated with the price of the catalysts, while durability is associated with degradation and poisoning of the catalysts, primarily by CO. This motivated us to develop tungsten-carbide-oxide (WxCyOz) as a new non-carbon based catalyst support for Pt–Ru–based anode PEMFC catalyst. The aim was to improve performance and obtain higher CO tolerance compared to commercial catalysts. The performance of obtained PtRu/WxCyOz catalysts was investigated using cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry. Particular attention was given to the analysis of CO poisoning, to better understand how WxCyOz species can contribute to the CO tolerance of PtRu/WxCyOz. Improved oxidation of COads at low potentials (E < 0.5 V vs. RHE) was ascribed to OH provided by the oxide phase at the interfacial region between the support and the PtRu particles. On the other hand, at high potentials (E > 0.5 V vs. RHE) CO removal proceeds dominantly via OH provided from the oxidized metal sites. The obtained catalyst with the best performance (30% PtRu/WxCyOz) was tested as an anode catalyst in PEM fuel cell. When using synthetic reformate as a fuel in PEMFC, there is a significant power drop of 35.3 % for the commercial 30% PtRu/C catalyst, while for the PtRu/WxCyOz anode catalyst this drop is around 16 %.",
journal = "International Journal of Hydrogen Energy",
title = "Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance",
volume = "45",
number = "27",
pages = "13929-13938",
doi = "10.1016/j.ijhydene.2020.03.086"
}
Brković, S. M., Marčeta Kaninski, M., Laušević, P., Šaponjić, A., Radulović, A., Rakić, A. A., Pašti, I. A.,& Nikolić, V. M.. (2020). Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance. in International Journal of Hydrogen Energy, 45(27), 13929-13938.
https://doi.org/10.1016/j.ijhydene.2020.03.086
Brković SM, Marčeta Kaninski M, Laušević P, Šaponjić A, Radulović A, Rakić AA, Pašti IA, Nikolić VM. Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance. in International Journal of Hydrogen Energy. 2020;45(27):13929-13938.
doi:10.1016/j.ijhydene.2020.03.086 .
Brković, Snežana M., Marčeta Kaninski, Milica, Laušević, Petar, Šaponjić, Aleksandra, Radulović, Aleksandra, Rakić, Aleksandra A., Pašti, Igor A., Nikolić, Vladimir M., "Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance" in International Journal of Hydrogen Energy, 45, no. 27 (2020):13929-13938,
https://doi.org/10.1016/j.ijhydene.2020.03.086 . .
17
6
14

Improving thin film flexible supercapacitor electrode properties using ion-track technology

Laušević, Petar; Pejović, Predrag; Žugić, Dragana; Kochnev, Yuri; Apel, Pavel; Laušević, Zoran

(2018)

TY  - JOUR
AU  - Laušević, Petar
AU  - Pejović, Predrag
AU  - Žugić, Dragana
AU  - Kochnev, Yuri
AU  - Apel, Pavel
AU  - Laušević, Zoran
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7620
AB  - A novel self-supporting carbon thin film flexible supercapacitor electrode with high volumetric and areal capacitance was developed. The increase in capacitance performance is achieved by introducing channels across the carbon thin film using ion-track technology. In the first step of the electrode synthesis, latent tracks are inscribed in the starting polyimide (Kapton) foil by irradiation with 253 MeV Kr ions. Next, macropores in the form of cylindrical channels are formed by selective chemical etching with NaOCl along the ion tracks, creating ion-track polymer. With subsequent carbonization and activation of the ion-track polymer, activated ion-track carbon is produced. A range of samples are obtained by varying the chemical etching time of the irradiated polymer. In addition to channel formation the chemical etching time influences the composition of surface functional groups. The best results are obtained by chemical etching for 40 min, the thickness of the sample is 21 A mu m with channel density 2.4 x 10(6) cm(-2) and average channel diameter 430 nm. Beside cylindrical macro channels this material is mainly microporous with 0.62 nm pore diameter and shows the highest areal (494 mF/cm(2)), volumetric (224 F/cm(3)) and gravimetric (178 F/g) capacitance. As a consequence of channel formation, the rate capability of the supercapacitor was also increased.
T2  - Journal of Materials Science: Materials in Electronics
T1  - Improving thin film flexible supercapacitor electrode properties using ion-track technology
VL  - 29
IS  - 9
SP  - 7489
EP  - 7500
DO  - 10.1007/s10854-018-8740-x
ER  - 
@article{
author = "Laušević, Petar and Pejović, Predrag and Žugić, Dragana and Kochnev, Yuri and Apel, Pavel and Laušević, Zoran",
year = "2018",
abstract = "A novel self-supporting carbon thin film flexible supercapacitor electrode with high volumetric and areal capacitance was developed. The increase in capacitance performance is achieved by introducing channels across the carbon thin film using ion-track technology. In the first step of the electrode synthesis, latent tracks are inscribed in the starting polyimide (Kapton) foil by irradiation with 253 MeV Kr ions. Next, macropores in the form of cylindrical channels are formed by selective chemical etching with NaOCl along the ion tracks, creating ion-track polymer. With subsequent carbonization and activation of the ion-track polymer, activated ion-track carbon is produced. A range of samples are obtained by varying the chemical etching time of the irradiated polymer. In addition to channel formation the chemical etching time influences the composition of surface functional groups. The best results are obtained by chemical etching for 40 min, the thickness of the sample is 21 A mu m with channel density 2.4 x 10(6) cm(-2) and average channel diameter 430 nm. Beside cylindrical macro channels this material is mainly microporous with 0.62 nm pore diameter and shows the highest areal (494 mF/cm(2)), volumetric (224 F/cm(3)) and gravimetric (178 F/g) capacitance. As a consequence of channel formation, the rate capability of the supercapacitor was also increased.",
journal = "Journal of Materials Science: Materials in Electronics",
title = "Improving thin film flexible supercapacitor electrode properties using ion-track technology",
volume = "29",
number = "9",
pages = "7489-7500",
doi = "10.1007/s10854-018-8740-x"
}
Laušević, P., Pejović, P., Žugić, D., Kochnev, Y., Apel, P.,& Laušević, Z.. (2018). Improving thin film flexible supercapacitor electrode properties using ion-track technology. in Journal of Materials Science: Materials in Electronics, 29(9), 7489-7500.
https://doi.org/10.1007/s10854-018-8740-x
Laušević P, Pejović P, Žugić D, Kochnev Y, Apel P, Laušević Z. Improving thin film flexible supercapacitor electrode properties using ion-track technology. in Journal of Materials Science: Materials in Electronics. 2018;29(9):7489-7500.
doi:10.1007/s10854-018-8740-x .
Laušević, Petar, Pejović, Predrag, Žugić, Dragana, Kochnev, Yuri, Apel, Pavel, Laušević, Zoran, "Improving thin film flexible supercapacitor electrode properties using ion-track technology" in Journal of Materials Science: Materials in Electronics, 29, no. 9 (2018):7489-7500,
https://doi.org/10.1007/s10854-018-8740-x . .
1
1
1

Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study

Maslovara, Slađana Lj.; Vasić Anićijević, Dragana D.; Kijevčanin, Mirjana Lj.; Radović, Ivona R.; Nikolić, Vladimir M.; Laušević, Petar; Marčeta Kaninski, Milica

(2017)

TY  - JOUR
AU  - Maslovara, Slađana Lj.
AU  - Vasić Anićijević, Dragana D.
AU  - Kijevčanin, Mirjana Lj.
AU  - Radović, Ivona R.
AU  - Nikolić, Vladimir M.
AU  - Laušević, Petar
AU  - Marčeta Kaninski, Milica
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1610
AB  - In this paper we discussed various factors contributing to the improvement of hydrogen evolution reaction (HER) activity of Ni and stainless steel electrodes activated by in situ addition of NiCoMo activators, using a combination of experimental techniques and DFT calculations. By comparing energy consumption of stainless steel (SS) electrodes in a lab scale alkaline electrolyzer with and without ionic activation, we obtained reduction of energy consumption by 21% at industrial conditions (high current density and temperature). We recorded U-I curves for activated and non-activated stainless steel electrodes in the current density range from 40 to 500 mA cm(2) and in the temperature range 298-343 K, and the obtained results were used in an electrochemical model of the laboratory alkaline electrolyzer. Increase of the electrode surface upon addition of ionic activators was confirmed by profilometric measurements and SEM analysis. Finally, we applied density functional theory (DFT) to discuss partial roles of applied ionic activators (Ni, Co and Mo) in the modification and improvement of the intrinsic properties of the cathode towards the HER in alkaline medium. From the combination of profilometric, SEM and DFT results, we conclude that the main factor contributing to the improvement of HER activity of Ni electrodes upon NiCoMo activation is the increase of electrode surface area. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study
VL  - 42
IS  - 8
SP  - 5072
EP  - 5082
DO  - 10.1016/j.ijhydene.2016.12.116
ER  - 
@article{
author = "Maslovara, Slađana Lj. and Vasić Anićijević, Dragana D. and Kijevčanin, Mirjana Lj. and Radović, Ivona R. and Nikolić, Vladimir M. and Laušević, Petar and Marčeta Kaninski, Milica",
year = "2017",
abstract = "In this paper we discussed various factors contributing to the improvement of hydrogen evolution reaction (HER) activity of Ni and stainless steel electrodes activated by in situ addition of NiCoMo activators, using a combination of experimental techniques and DFT calculations. By comparing energy consumption of stainless steel (SS) electrodes in a lab scale alkaline electrolyzer with and without ionic activation, we obtained reduction of energy consumption by 21% at industrial conditions (high current density and temperature). We recorded U-I curves for activated and non-activated stainless steel electrodes in the current density range from 40 to 500 mA cm(2) and in the temperature range 298-343 K, and the obtained results were used in an electrochemical model of the laboratory alkaline electrolyzer. Increase of the electrode surface upon addition of ionic activators was confirmed by profilometric measurements and SEM analysis. Finally, we applied density functional theory (DFT) to discuss partial roles of applied ionic activators (Ni, Co and Mo) in the modification and improvement of the intrinsic properties of the cathode towards the HER in alkaline medium. From the combination of profilometric, SEM and DFT results, we conclude that the main factor contributing to the improvement of HER activity of Ni electrodes upon NiCoMo activation is the increase of electrode surface area. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study",
volume = "42",
number = "8",
pages = "5072-5082",
doi = "10.1016/j.ijhydene.2016.12.116"
}
Maslovara, S. Lj., Vasić Anićijević, D. D., Kijevčanin, M. Lj., Radović, I. R., Nikolić, V. M., Laušević, P.,& Marčeta Kaninski, M.. (2017). Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study. in International Journal of Hydrogen Energy, 42(8), 5072-5082.
https://doi.org/10.1016/j.ijhydene.2016.12.116
Maslovara SL, Vasić Anićijević DD, Kijevčanin ML, Radović IR, Nikolić VM, Laušević P, Marčeta Kaninski M. Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study. in International Journal of Hydrogen Energy. 2017;42(8):5072-5082.
doi:10.1016/j.ijhydene.2016.12.116 .
Maslovara, Slađana Lj., Vasić Anićijević, Dragana D., Kijevčanin, Mirjana Lj., Radović, Ivona R., Nikolić, Vladimir M., Laušević, Petar, Marčeta Kaninski, Milica, "Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study" in International Journal of Hydrogen Energy, 42, no. 8 (2017):5072-5082,
https://doi.org/10.1016/j.ijhydene.2016.12.116 . .
6
4
7

Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC

Marčeta Kaninski, Milica; Brković, Snežana M.; Perović, Ivana; Laušević, Petar; Pašti, Igor A.; Šaponjić, Đorđe; Nikolić, Vladimir M.

(2016)

TY  - CONF
AU  - Marčeta Kaninski, Milica
AU  - Brković, Snežana M.
AU  - Perović, Ivana
AU  - Laušević, Petar
AU  - Pašti, Igor A.
AU  - Šaponjić, Đorđe
AU  - Nikolić, Vladimir M.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11570
AB  - Cost and durability are two major factors that delay large-scale production and commercialization of PEMFC's. One of the technologically ready application of the proton exchange membrane fuel cells (PEMFC) is in the combined heat and power systems (µCHP), which are used in the individual households or buildings. The performance of the µCHP systems greatly depends on the purity of the hydrogen stream, which is produced via methane reforming process. To overcome low CO tolerance of the commercially used Pt electrocatalyst and to lower the catalyst content we have prepared non-stoichiometric tungsten oxide as a Pt based catalyst support. We have prepared several catalysts designated as 10% Pt/WO3-C, 20% Pt/WO3-C, 40% Pt/WO3-C. The structure and morphology characteristics of the prepared catalysts were investigated using XRD, TEM and SEM/EDX techniques. Investigations concerning electroactivity of these catalysts towards the hydrogen oxidation reaction (HOR) were performed using cyclic voltammetry, linear sweep voltammetry, forming an ultra thin catalyst layer onto RDE. Mechanism and the kinetics of the prepared catalysts towards HOR were evaluated and if was found that increased mass activity of the 10% Pt/WO3-C could be attributed to the interactive naure of the WO3 catalyst support. Obtained results clearly show increased CO tolerance of Pt/WO3-C catalyst compared to commercial Pt/C, which was confirmed by lowering the stripping potential of the CO, adsorbed on the surface of the 10% Pt/WO3-C. catalyst is more facile than that on commercial 40% Pt/C. These catalysts were employed as anode catalyst in the MEA, and the performance of single cell PEMFC were compared to commercial catalyst.
C3  - PRiME 2016/230th ECS Meeting October 2, 2016 - October 7, 2016 Honolulu, HI
T1  - Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC
VL  - MA2016-02
IS  - 38
SP  - 2629
EP  - 2629
DO  - 10.1149/MA2016-02/38/2629
ER  - 
@conference{
author = "Marčeta Kaninski, Milica and Brković, Snežana M. and Perović, Ivana and Laušević, Petar and Pašti, Igor A. and Šaponjić, Đorđe and Nikolić, Vladimir M.",
year = "2016",
abstract = "Cost and durability are two major factors that delay large-scale production and commercialization of PEMFC's. One of the technologically ready application of the proton exchange membrane fuel cells (PEMFC) is in the combined heat and power systems (µCHP), which are used in the individual households or buildings. The performance of the µCHP systems greatly depends on the purity of the hydrogen stream, which is produced via methane reforming process. To overcome low CO tolerance of the commercially used Pt electrocatalyst and to lower the catalyst content we have prepared non-stoichiometric tungsten oxide as a Pt based catalyst support. We have prepared several catalysts designated as 10% Pt/WO3-C, 20% Pt/WO3-C, 40% Pt/WO3-C. The structure and morphology characteristics of the prepared catalysts were investigated using XRD, TEM and SEM/EDX techniques. Investigations concerning electroactivity of these catalysts towards the hydrogen oxidation reaction (HOR) were performed using cyclic voltammetry, linear sweep voltammetry, forming an ultra thin catalyst layer onto RDE. Mechanism and the kinetics of the prepared catalysts towards HOR were evaluated and if was found that increased mass activity of the 10% Pt/WO3-C could be attributed to the interactive naure of the WO3 catalyst support. Obtained results clearly show increased CO tolerance of Pt/WO3-C catalyst compared to commercial Pt/C, which was confirmed by lowering the stripping potential of the CO, adsorbed on the surface of the 10% Pt/WO3-C. catalyst is more facile than that on commercial 40% Pt/C. These catalysts were employed as anode catalyst in the MEA, and the performance of single cell PEMFC were compared to commercial catalyst.",
journal = "PRiME 2016/230th ECS Meeting October 2, 2016 - October 7, 2016 Honolulu, HI",
title = "Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC",
volume = "MA2016-02",
number = "38",
pages = "2629-2629",
doi = "10.1149/MA2016-02/38/2629"
}
Marčeta Kaninski, M., Brković, S. M., Perović, I., Laušević, P., Pašti, I. A., Šaponjić, Đ.,& Nikolić, V. M.. (2016). Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC. in PRiME 2016/230th ECS Meeting October 2, 2016 - October 7, 2016 Honolulu, HI, MA2016-02(38), 2629-2629.
https://doi.org/10.1149/MA2016-02/38/2629
Marčeta Kaninski M, Brković SM, Perović I, Laušević P, Pašti IA, Šaponjić Đ, Nikolić VM. Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC. in PRiME 2016/230th ECS Meeting October 2, 2016 - October 7, 2016 Honolulu, HI. 2016;MA2016-02(38):2629-2629.
doi:10.1149/MA2016-02/38/2629 .
Marčeta Kaninski, Milica, Brković, Snežana M., Perović, Ivana, Laušević, Petar, Pašti, Igor A., Šaponjić, Đorđe, Nikolić, Vladimir M., "Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC" in PRiME 2016/230th ECS Meeting October 2, 2016 - October 7, 2016 Honolulu, HI, MA2016-02, no. 38 (2016):2629-2629,
https://doi.org/10.1149/MA2016-02/38/2629 . .

Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator

Perovic, Nana M.; Aćimović, Danka D.; Tasić, Gvozden S.; Karić, Slavko D.; Laušević, Petar; Marčeta Kaninski, Milica; Nikolić, Vladimir M.

(2015)

TY  - JOUR
AU  - Perovic, Nana M.
AU  - Aćimović, Danka D.
AU  - Tasić, Gvozden S.
AU  - Karić, Slavko D.
AU  - Laušević, Petar
AU  - Marčeta Kaninski, Milica
AU  - Nikolić, Vladimir M.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/533
AB  - This manuscript presents contribution on the improved efficiency of the alkaline electrolytic production of hydrogen by in situ adding activating compounds directly into the electrolyte during the electrolytic process. New electrode material, ternary system, Ni-Cu-Mo, was applied as activating compound i.e. ionic activator. The energy requirements per mass unit of hydrogen produced is reduced for more than 10%, compared to non-activated, 30 wt. % KOH electrolyte system. Energy saving is higher at higher temperatures and at higher current densities. During the electrolytic process, the ionic activators develop nanosized porous structure deposits on the surface of the Ni electrode. Presented results point out a strong possibility of the usage of ternary ionic activators in industrial applications. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator
VL  - 40
IS  - 19
SP  - 6270
EP  - 6275
DO  - 10.1016/j.ijhydene.2015.03.003
ER  - 
@article{
author = "Perovic, Nana M. and Aćimović, Danka D. and Tasić, Gvozden S. and Karić, Slavko D. and Laušević, Petar and Marčeta Kaninski, Milica and Nikolić, Vladimir M.",
year = "2015",
abstract = "This manuscript presents contribution on the improved efficiency of the alkaline electrolytic production of hydrogen by in situ adding activating compounds directly into the electrolyte during the electrolytic process. New electrode material, ternary system, Ni-Cu-Mo, was applied as activating compound i.e. ionic activator. The energy requirements per mass unit of hydrogen produced is reduced for more than 10%, compared to non-activated, 30 wt. % KOH electrolyte system. Energy saving is higher at higher temperatures and at higher current densities. During the electrolytic process, the ionic activators develop nanosized porous structure deposits on the surface of the Ni electrode. Presented results point out a strong possibility of the usage of ternary ionic activators in industrial applications. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator",
volume = "40",
number = "19",
pages = "6270-6275",
doi = "10.1016/j.ijhydene.2015.03.003"
}
Perovic, N. M., Aćimović, D. D., Tasić, G. S., Karić, S. D., Laušević, P., Marčeta Kaninski, M.,& Nikolić, V. M.. (2015). Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator. in International Journal of Hydrogen Energy, 40(19), 6270-6275.
https://doi.org/10.1016/j.ijhydene.2015.03.003
Perovic NM, Aćimović DD, Tasić GS, Karić SD, Laušević P, Marčeta Kaninski M, Nikolić VM. Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator. in International Journal of Hydrogen Energy. 2015;40(19):6270-6275.
doi:10.1016/j.ijhydene.2015.03.003 .
Perovic, Nana M., Aćimović, Danka D., Tasić, Gvozden S., Karić, Slavko D., Laušević, Petar, Marčeta Kaninski, Milica, Nikolić, Vladimir M., "Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator" in International Journal of Hydrogen Energy, 40, no. 19 (2015):6270-6275,
https://doi.org/10.1016/j.ijhydene.2015.03.003 . .
6
9
7
9

Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators

Nikolić, Vladimir M.; Maslovara, Slađana Lj.; Tasić, Gvozden S.; Brdarić, Tanja; Laušević, Petar; Radak, Bojan; Marčeta Kaninski, Milica

(2015)

TY  - JOUR
AU  - Nikolić, Vladimir M.
AU  - Maslovara, Slađana Lj.
AU  - Tasić, Gvozden S.
AU  - Brdarić, Tanja
AU  - Laušević, Petar
AU  - Radak, Bojan
AU  - Marčeta Kaninski, Milica
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/705
AB  - This paper presents investigations on the influence of in-situ ionic activation using combination of three D-metals: Ni, Co and Moon the hydrogen evolution reaction (HER) mechanism and kinetics. Polarization measurements were performed to obtain kinetic parameters for the HER and the results are presented to show Tafel slopes, exchange current densities and apparent energy of activation. The values of the kinetic parameters confirm the existence of two Tafel slopes, in the case of NiCoMo based ionic activators (i.a.) in the investigated temperature range, with very high values of the exchange current density. Electrochemical impedance spectroscopy measurements were employed to further investigate the origin of the obtained electrocatalytic effect on the HER. The measurements were performed at several overpotentials and temperatures. It was found that co-deposition of Ni, Co and Mo species on the Ni cathode results in a large number of active sites for hydrogen adsorption, and a synergetic effect giving electronic structure suitable for the HER, are the main factors contributing to the enhanced HER kinetics. It was shown that EIS measurements had a crucial role in determining the HER mechanism, especially with the complex in-situ activation of the alkaline electrolysis. (C) 2015 Published by Elsevier B.V.
T2  - Applied Catalysis. B: Environmental
T1  - Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators
VL  - 179
SP  - 88
EP  - 94
DO  - 10.1016/j.apcatb.2015.05.012
ER  - 
@article{
author = "Nikolić, Vladimir M. and Maslovara, Slađana Lj. and Tasić, Gvozden S. and Brdarić, Tanja and Laušević, Petar and Radak, Bojan and Marčeta Kaninski, Milica",
year = "2015",
abstract = "This paper presents investigations on the influence of in-situ ionic activation using combination of three D-metals: Ni, Co and Moon the hydrogen evolution reaction (HER) mechanism and kinetics. Polarization measurements were performed to obtain kinetic parameters for the HER and the results are presented to show Tafel slopes, exchange current densities and apparent energy of activation. The values of the kinetic parameters confirm the existence of two Tafel slopes, in the case of NiCoMo based ionic activators (i.a.) in the investigated temperature range, with very high values of the exchange current density. Electrochemical impedance spectroscopy measurements were employed to further investigate the origin of the obtained electrocatalytic effect on the HER. The measurements were performed at several overpotentials and temperatures. It was found that co-deposition of Ni, Co and Mo species on the Ni cathode results in a large number of active sites for hydrogen adsorption, and a synergetic effect giving electronic structure suitable for the HER, are the main factors contributing to the enhanced HER kinetics. It was shown that EIS measurements had a crucial role in determining the HER mechanism, especially with the complex in-situ activation of the alkaline electrolysis. (C) 2015 Published by Elsevier B.V.",
journal = "Applied Catalysis. B: Environmental",
title = "Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators",
volume = "179",
pages = "88-94",
doi = "10.1016/j.apcatb.2015.05.012"
}
Nikolić, V. M., Maslovara, S. Lj., Tasić, G. S., Brdarić, T., Laušević, P., Radak, B.,& Marčeta Kaninski, M.. (2015). Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators. in Applied Catalysis. B: Environmental, 179, 88-94.
https://doi.org/10.1016/j.apcatb.2015.05.012
Nikolić VM, Maslovara SL, Tasić GS, Brdarić T, Laušević P, Radak B, Marčeta Kaninski M. Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators. in Applied Catalysis. B: Environmental. 2015;179:88-94.
doi:10.1016/j.apcatb.2015.05.012 .
Nikolić, Vladimir M., Maslovara, Slađana Lj., Tasić, Gvozden S., Brdarić, Tanja, Laušević, Petar, Radak, Bojan, Marčeta Kaninski, Milica, "Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators" in Applied Catalysis. B: Environmental, 179 (2015):88-94,
https://doi.org/10.1016/j.apcatb.2015.05.012 . .
112
78
111

Electrochemistry of cobalt ethylenediamine complexes at high pH

Miulović, Snežana M.; Nikolić, Vladimir M.; Laušević, Petar; Aćimović, Danka D.; Tasić, Gvozden S.; Marčeta Kaninski, Milica

(2015)

TY  - JOUR
AU  - Miulović, Snežana M.
AU  - Nikolić, Vladimir M.
AU  - Laušević, Petar
AU  - Aćimović, Danka D.
AU  - Tasić, Gvozden S.
AU  - Marčeta Kaninski, Milica
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/868
AB  - The electrochemical behavior of cobalt ethylenediamine complexes (Co(en)), at pH 12 was investigated by cyclic voltammetry (CV), the potentiostatic pulse technique and polarization curve measurements at stationary and rotating glassy carbon (GC) electrodes. It was shown that sixteen different species could be formed in a solution containing Co(en)3, with the most stable one at all pH values being [Co(en)(3)](3+). The reduction of [Co(en)(3)](3+) into [Co(en)(3)](2+) was shown to be a totally irreversible, one-electron exchange reaction. Further reduction of [Co(en)(3)](2+) was found to be a complex process leading to cobalt deposition at potentials more negative than -1.45 V vs. SCE. The process of [Co(en)(3)](2+) oxidation was also complex and most probably coupled with chemical reactions.
T2  - Journal of the Serbian Chemical Society
T1  - Electrochemistry of cobalt ethylenediamine complexes at high pH
VL  - 80
IS  - 12
SP  - 1515
EP  - 1527
DO  - 10.2298/JSC150327079M
ER  - 
@article{
author = "Miulović, Snežana M. and Nikolić, Vladimir M. and Laušević, Petar and Aćimović, Danka D. and Tasić, Gvozden S. and Marčeta Kaninski, Milica",
year = "2015",
abstract = "The electrochemical behavior of cobalt ethylenediamine complexes (Co(en)), at pH 12 was investigated by cyclic voltammetry (CV), the potentiostatic pulse technique and polarization curve measurements at stationary and rotating glassy carbon (GC) electrodes. It was shown that sixteen different species could be formed in a solution containing Co(en)3, with the most stable one at all pH values being [Co(en)(3)](3+). The reduction of [Co(en)(3)](3+) into [Co(en)(3)](2+) was shown to be a totally irreversible, one-electron exchange reaction. Further reduction of [Co(en)(3)](2+) was found to be a complex process leading to cobalt deposition at potentials more negative than -1.45 V vs. SCE. The process of [Co(en)(3)](2+) oxidation was also complex and most probably coupled with chemical reactions.",
journal = "Journal of the Serbian Chemical Society",
title = "Electrochemistry of cobalt ethylenediamine complexes at high pH",
volume = "80",
number = "12",
pages = "1515-1527",
doi = "10.2298/JSC150327079M"
}
Miulović, S. M., Nikolić, V. M., Laušević, P., Aćimović, D. D., Tasić, G. S.,& Marčeta Kaninski, M.. (2015). Electrochemistry of cobalt ethylenediamine complexes at high pH. in Journal of the Serbian Chemical Society, 80(12), 1515-1527.
https://doi.org/10.2298/JSC150327079M
Miulović SM, Nikolić VM, Laušević P, Aćimović DD, Tasić GS, Marčeta Kaninski M. Electrochemistry of cobalt ethylenediamine complexes at high pH. in Journal of the Serbian Chemical Society. 2015;80(12):1515-1527.
doi:10.2298/JSC150327079M .
Miulović, Snežana M., Nikolić, Vladimir M., Laušević, Petar, Aćimović, Danka D., Tasić, Gvozden S., Marčeta Kaninski, Milica, "Electrochemistry of cobalt ethylenediamine complexes at high pH" in Journal of the Serbian Chemical Society, 80, no. 12 (2015):1515-1527,
https://doi.org/10.2298/JSC150327079M . .
2
2
2

Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis

Maslovara, Slađana Lj.; Marčeta Kaninski, Milica; Perović, Ivana M.; Laušević, Petar; Tasić, Gvozden S.; Radak, Bojan; Nikolić, Vladimir M.

(2013)

TY  - JOUR
AU  - Maslovara, Slađana Lj.
AU  - Marčeta Kaninski, Milica
AU  - Perović, Ivana M.
AU  - Laušević, Petar
AU  - Tasić, Gvozden S.
AU  - Radak, Bojan
AU  - Nikolić, Vladimir M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5779
AB  - In this manuscript we have presented the results of the use of ternary ionic activator in the alkaline water electrolysis. Novel Ni-Co-Mo based ionic activator was added in-situ to standard electrolyte. Energy consumption of the alkaline electrolyzer was determined at different current densities and elevated temperatures. Energy saving was higher at higher temperatures and higher operating current densities. Results showed that the reduction in energy consumption using Ni-Co-Mo based ionic activator was about 17%, compared to standard 6 M KOH. SEM morphology investigation proved the deposition of nickel, cobalt and molybdenum species on the cathode, greatly increasing the active surface area. UV/VIS spectroscopy was used to monitor changes in the electrolyte composition during the electrolytic process, and results show the decrease in the ionic activator concentration in the 6 M KOH. Our experiments point out a strong possibility of the usage of these ternary ionic activators in industrial alkaline electrolyzers. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis
VL  - 38
IS  - 36
SP  - 15928
EP  - 15933
DO  - 10.1016/j.ijhydene.2013.10.039
ER  - 
@article{
author = "Maslovara, Slađana Lj. and Marčeta Kaninski, Milica and Perović, Ivana M. and Laušević, Petar and Tasić, Gvozden S. and Radak, Bojan and Nikolić, Vladimir M.",
year = "2013",
abstract = "In this manuscript we have presented the results of the use of ternary ionic activator in the alkaline water electrolysis. Novel Ni-Co-Mo based ionic activator was added in-situ to standard electrolyte. Energy consumption of the alkaline electrolyzer was determined at different current densities and elevated temperatures. Energy saving was higher at higher temperatures and higher operating current densities. Results showed that the reduction in energy consumption using Ni-Co-Mo based ionic activator was about 17%, compared to standard 6 M KOH. SEM morphology investigation proved the deposition of nickel, cobalt and molybdenum species on the cathode, greatly increasing the active surface area. UV/VIS spectroscopy was used to monitor changes in the electrolyte composition during the electrolytic process, and results show the decrease in the ionic activator concentration in the 6 M KOH. Our experiments point out a strong possibility of the usage of these ternary ionic activators in industrial alkaline electrolyzers. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis",
volume = "38",
number = "36",
pages = "15928-15933",
doi = "10.1016/j.ijhydene.2013.10.039"
}
Maslovara, S. Lj., Marčeta Kaninski, M., Perović, I. M., Laušević, P., Tasić, G. S., Radak, B.,& Nikolić, V. M.. (2013). Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis. in International Journal of Hydrogen Energy, 38(36), 15928-15933.
https://doi.org/10.1016/j.ijhydene.2013.10.039
Maslovara SL, Marčeta Kaninski M, Perović IM, Laušević P, Tasić GS, Radak B, Nikolić VM. Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis. in International Journal of Hydrogen Energy. 2013;38(36):15928-15933.
doi:10.1016/j.ijhydene.2013.10.039 .
Maslovara, Slađana Lj., Marčeta Kaninski, Milica, Perović, Ivana M., Laušević, Petar, Tasić, Gvozden S., Radak, Bojan, Nikolić, Vladimir M., "Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis" in International Journal of Hydrogen Energy, 38, no. 36 (2013):15928-15933,
https://doi.org/10.1016/j.ijhydene.2013.10.039 . .
16
10
15