TY  - JOUR
AU  - Gavrilov, Nemanja
AU  - Momcilovic, Milan
AU  - Dobrota, Ana S.
AU  - Stanković, Dalibor
AU  - Jokić, Bojan
AU  - Babić, Biljana
AU  - Skorodumova, Natalia V.
AU  - Mentus, Slavko V.
AU  - Pasti, Igor A.
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2088
AB  - The incorporation of trace amounts ( lt  0.2%) of Co and Ni noticeably enhanced the catalytic activity of nitrogen free ordered mesoporous carbon (OMC) towards oxygen reduction reaction (ORR). (Co,Ni)-doped OMCs were characterized by N-2-adsorption measurements, X-ray powder diffraction, field emission scanning electron microscopy and Raman spectroscopy methods, and their ORR activity was estimated by voltammetry on rotating disk electrode in acidic and alkaline media. (Co,Ni)-doped OMCs show modest activities in acidic media, while the catalytic activity in alkaline media is rather high. The measured activities are compared to the Pt-based and Pt-free ORR catalysts reported in the literature. The number of electrons consumed per O-2 in metal-doped OMCs was found to vary between 2 and 4, which is advantageous in comparison to metal-free OMC. Also, the mass activities of metal-doped OMCs were found to be up to 2.5 times higher compared to that of metal-free OMC. We suggest that the ORR activity is governed by a balance between (i) textural properties, which determine the electrochemically accessible surface of the catalyst and which are influenced by the addition of a metal precursor, and (ii) novel active sites formed upon the introduction of metals into the carbon structure. In particular, our Density Functional Theory calculations suggest that Co and Ni atoms embedded into the single vacancies of graphene can activate the O-2 molecule and contribute to the decomposition of peroxide.
PB  - Elsevier Science Sa, Lausanne
T2  - Surface and Coatings Technology
T1  - A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media
VL  - 349
SP  - 511
EP  - 521
DO  - 10.1016/j.surfcoat.2018.06.008
ER  - 

@article{
author = "Gavrilov, Nemanja and Momcilovic, Milan and Dobrota, Ana S. and Stanković, Dalibor and Jokić, Bojan and Babić, Biljana and Skorodumova, Natalia V. and Mentus, Slavko V. and Pasti, Igor A.",
year = "2018",
abstract = "The incorporation of trace amounts ( lt  0.2%) of Co and Ni noticeably enhanced the catalytic activity of nitrogen free ordered mesoporous carbon (OMC) towards oxygen reduction reaction (ORR). (Co,Ni)-doped OMCs were characterized by N-2-adsorption measurements, X-ray powder diffraction, field emission scanning electron microscopy and Raman spectroscopy methods, and their ORR activity was estimated by voltammetry on rotating disk electrode in acidic and alkaline media. (Co,Ni)-doped OMCs show modest activities in acidic media, while the catalytic activity in alkaline media is rather high. The measured activities are compared to the Pt-based and Pt-free ORR catalysts reported in the literature. The number of electrons consumed per O-2 in metal-doped OMCs was found to vary between 2 and 4, which is advantageous in comparison to metal-free OMC. Also, the mass activities of metal-doped OMCs were found to be up to 2.5 times higher compared to that of metal-free OMC. We suggest that the ORR activity is governed by a balance between (i) textural properties, which determine the electrochemically accessible surface of the catalyst and which are influenced by the addition of a metal precursor, and (ii) novel active sites formed upon the introduction of metals into the carbon structure. In particular, our Density Functional Theory calculations suggest that Co and Ni atoms embedded into the single vacancies of graphene can activate the O-2 molecule and contribute to the decomposition of peroxide.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Surface and Coatings Technology",
title = "A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media",
volume = "349",
pages = "511-521",
doi = "10.1016/j.surfcoat.2018.06.008"
}

Gavrilov, N., Momcilovic, M., Dobrota, A. S., Stanković, D., Jokić, B., Babić, B., Skorodumova, N. V., Mentus, S. V.,& Pasti, I. A.. (2018). A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media. in Surface and Coatings Technology
Elsevier Science Sa, Lausanne., 349, 511-521.
https://doi.org/10.1016/j.surfcoat.2018.06.008

Gavrilov N, Momcilovic M, Dobrota AS, Stanković D, Jokić B, Babić B, Skorodumova NV, Mentus SV, Pasti IA. A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media. in Surface and Coatings Technology. 2018;349:511-521.
doi:10.1016/j.surfcoat.2018.06.008 .

Gavrilov, Nemanja, Momcilovic, Milan, Dobrota, Ana S., Stanković, Dalibor, Jokić, Bojan, Babić, Biljana, Skorodumova, Natalia V., Mentus, Slavko V., Pasti, Igor A., "A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media" in Surface and Coatings Technology, 349 (2018):511-521,
https://doi.org/10.1016/j.surfcoat.2018.06.008 . .

TY  - JOUR
AU  - Sencanski, Jelena V.
AU  - Vujkovic, Milica J.
AU  - Stojkovic, Ivana B.
AU  - Majstorovic, Divna M.
AU  - Bajuk-Bogdanović, Danica
AU  - Pastor, Ferenc
AU  - Mentus, Slavko V.
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2500
AB  - The Li-ion batteries are the main power source for the high technology devices, such as mobile phones and electric vehicles. Because of that, the number of spent Li-ion batteries significantly increases. Today, the number of active mobile phones crossed 7.19 billion. It is estimated that the mass of the spent lithium ion batteries in China will exceed 500,000 t by 2020. The trouble is in the ingredients of these batteries. They contain Li, Co, Mn, Ni, Cu, Al and toxic and flammable electrolytes which have a harmful affection to the environment. Because of that, the recycling procedure attracts raising attention of researches. Several commercial spent Li-ion batteries were recycled by the relatively fast, economic and simple procedure. The three ways of separating the cathode material from Al collector were examined after the manual dismantling of the components of batteries with the Li(Co-Mn-Ni)O-2 as cathode material. These were: 1. dissolution of the Al collector in the alkali medium, 2. peeling off with N-methyl-pyrrolidone and 3. thermal decomposition of the adhesive at 700 degrees C. The procedure with the highest yield was the one with the dissolution in alkali medium. The chemical analysis of the single batteries' components (the crust, Al/Cu collector, cathode material) were done by the atomic absorption spectrometry. The components, before the analysis, were dissolved. The re-synthesis of the cathode material by the method of the citrate gel combustion was done after the separating the cathode material and dissolving it in the nitric acid. The obtained product was, after annealing, characterized by the methods of X-ray diffraction and Raman spectroscopy. The recycled product was LiCo0.59Mn0.26Ni0.15O2 stoichiometry, with the hexagonal layered structure alpha-NaFeO2 type. The functionalization of the resynthesized material was examined in the 1 M solution LiClO4 in the propylene carbonate, by galvanostatic charging, with the current density of 0.7C. The recycled material showed relatively good capacities of charging and discharging which are 94.9 i 64.8 mA h g(-1), respectively.
PB  - Assoc Chemical Engineers Serbia, Belgrade
T2  - Hemijska industrija
T1  - Recycling of Lico0.59mn0.26ni0.15o2 Cathodic Material from  Spent Li-Ion Batteries by the Method of the Citrate Gel Combustion
VL  - 71
IS  - 3
SP  - 211
EP  - 220
DO  - 10.2298/HEMIND160418031S
ER  - 

@article{
author = "Sencanski, Jelena V. and Vujkovic, Milica J. and Stojkovic, Ivana B. and Majstorovic, Divna M. and Bajuk-Bogdanović, Danica and Pastor, Ferenc and Mentus, Slavko V.",
year = "2017",
abstract = "The Li-ion batteries are the main power source for the high technology devices, such as mobile phones and electric vehicles. Because of that, the number of spent Li-ion batteries significantly increases. Today, the number of active mobile phones crossed 7.19 billion. It is estimated that the mass of the spent lithium ion batteries in China will exceed 500,000 t by 2020. The trouble is in the ingredients of these batteries. They contain Li, Co, Mn, Ni, Cu, Al and toxic and flammable electrolytes which have a harmful affection to the environment. Because of that, the recycling procedure attracts raising attention of researches. Several commercial spent Li-ion batteries were recycled by the relatively fast, economic and simple procedure. The three ways of separating the cathode material from Al collector were examined after the manual dismantling of the components of batteries with the Li(Co-Mn-Ni)O-2 as cathode material. These were: 1. dissolution of the Al collector in the alkali medium, 2. peeling off with N-methyl-pyrrolidone and 3. thermal decomposition of the adhesive at 700 degrees C. The procedure with the highest yield was the one with the dissolution in alkali medium. The chemical analysis of the single batteries' components (the crust, Al/Cu collector, cathode material) were done by the atomic absorption spectrometry. The components, before the analysis, were dissolved. The re-synthesis of the cathode material by the method of the citrate gel combustion was done after the separating the cathode material and dissolving it in the nitric acid. The obtained product was, after annealing, characterized by the methods of X-ray diffraction and Raman spectroscopy. The recycled product was LiCo0.59Mn0.26Ni0.15O2 stoichiometry, with the hexagonal layered structure alpha-NaFeO2 type. The functionalization of the resynthesized material was examined in the 1 M solution LiClO4 in the propylene carbonate, by galvanostatic charging, with the current density of 0.7C. The recycled material showed relatively good capacities of charging and discharging which are 94.9 i 64.8 mA h g(-1), respectively.",
publisher = "Assoc Chemical Engineers Serbia, Belgrade",
journal = "Hemijska industrija",
title = "Recycling of Lico0.59mn0.26ni0.15o2 Cathodic Material from  Spent Li-Ion Batteries by the Method of the Citrate Gel Combustion",
volume = "71",
number = "3",
pages = "211-220",
doi = "10.2298/HEMIND160418031S"
}

Sencanski, J. V., Vujkovic, M. J., Stojkovic, I. B., Majstorovic, D. M., Bajuk-Bogdanović, D., Pastor, F.,& Mentus, S. V.. (2017). Recycling of Lico0.59mn0.26ni0.15o2 Cathodic Material from  Spent Li-Ion Batteries by the Method of the Citrate Gel Combustion. in Hemijska industrija
Assoc Chemical Engineers Serbia, Belgrade., 71(3), 211-220.
https://doi.org/10.2298/HEMIND160418031S

Sencanski JV, Vujkovic MJ, Stojkovic IB, Majstorovic DM, Bajuk-Bogdanović D, Pastor F, Mentus SV. Recycling of Lico0.59mn0.26ni0.15o2 Cathodic Material from  Spent Li-Ion Batteries by the Method of the Citrate Gel Combustion. in Hemijska industrija. 2017;71(3):211-220.
doi:10.2298/HEMIND160418031S .

Sencanski, Jelena V., Vujkovic, Milica J., Stojkovic, Ivana B., Majstorovic, Divna M., Bajuk-Bogdanović, Danica, Pastor, Ferenc, Mentus, Slavko V., "Recycling of Lico0.59mn0.26ni0.15o2 Cathodic Material from  Spent Li-Ion Batteries by the Method of the Citrate Gel Combustion" in Hemijska industrija, 71, no. 3 (2017):211-220,
https://doi.org/10.2298/HEMIND160418031S . .