TY  - JOUR
AU  - Gezović, Aleksandra
AU  - Mišurović, Jana
AU  - Milovanović, Branislav
AU  - Etinski, Mihajlo
AU  - Krstić, Jugoslav
AU  - Grudić, Veselinka
AU  - Dominko, Robert
AU  - Mentus, Slavko
AU  - Vujković, Milica
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5361
AB  - New era heteroatom-doped carbons, relying on different biomass residues, play a rising role in contemporary carbon energy storage technology. Herein, an abundant waste of viticulture industry – vine shoots (VS) was carbonized and examined as electrode material for supercapacitors with non-conventional aqueous electrolyte. Biochar obtained by pre-carbonization treatment of vine shoots (at 300 °C) is impregnated with ZnCl2 at 600 °C (ACvs600) and 700 °C (ACvs700), to synthesize carbon with developed specific surface area, close to 1500 m2 g−1. The high specific capacitance of ACvs is achieved in Al-based electrolyte, which allows working voltage of 1.8 V ACvs700/Al2(SO4)3/ACvs700 cell delivers the energy density of 24 Wh kg−1 at 1 A g−1, which is higher than one measured in typical Na2SO4 (∼16 Wh kg−1) and H2SO4 electrolyte (∼11 Wh kg−1). By using Trasatti&Dunn surface charge distribution models, the reallocation of inner vs. outer charge in Al-based electrolyte is found to be different from that in H2SO4 electrolyte. The nature of the interaction between pristine/defective graphene and hydrated Al3+ ion is examined by Density Functional Theory (DFT) and discussed. Gathered experimental and theoretical data open novel perspectives for using carbon in more sustainable energy storage devices.
PB  - Elsevier
T2  - Journal of Power Sources
T1  - High Al-ion storage of vine shoots-derived activated carbon: New concept for affordable and sustainable supercapacitors
VL  - 538
SP  - 231561
DO  - 10.1016/j.jpowsour.2022.231561
ER  - 

@article{
author = "Gezović, Aleksandra and Mišurović, Jana and Milovanović, Branislav and Etinski, Mihajlo and Krstić, Jugoslav and Grudić, Veselinka and Dominko, Robert and Mentus, Slavko and Vujković, Milica",
year = "2022",
abstract = "New era heteroatom-doped carbons, relying on different biomass residues, play a rising role in contemporary carbon energy storage technology. Herein, an abundant waste of viticulture industry – vine shoots (VS) was carbonized and examined as electrode material for supercapacitors with non-conventional aqueous electrolyte. Biochar obtained by pre-carbonization treatment of vine shoots (at 300 °C) is impregnated with ZnCl2 at 600 °C (ACvs600) and 700 °C (ACvs700), to synthesize carbon with developed specific surface area, close to 1500 m2 g−1. The high specific capacitance of ACvs is achieved in Al-based electrolyte, which allows working voltage of 1.8 V ACvs700/Al2(SO4)3/ACvs700 cell delivers the energy density of 24 Wh kg−1 at 1 A g−1, which is higher than one measured in typical Na2SO4 (∼16 Wh kg−1) and H2SO4 electrolyte (∼11 Wh kg−1). By using Trasatti&Dunn surface charge distribution models, the reallocation of inner vs. outer charge in Al-based electrolyte is found to be different from that in H2SO4 electrolyte. The nature of the interaction between pristine/defective graphene and hydrated Al3+ ion is examined by Density Functional Theory (DFT) and discussed. Gathered experimental and theoretical data open novel perspectives for using carbon in more sustainable energy storage devices.",
publisher = "Elsevier",
journal = "Journal of Power Sources",
title = "High Al-ion storage of vine shoots-derived activated carbon: New concept for affordable and sustainable supercapacitors",
volume = "538",
pages = "231561",
doi = "10.1016/j.jpowsour.2022.231561"
}

Gezović, A., Mišurović, J., Milovanović, B., Etinski, M., Krstić, J., Grudić, V., Dominko, R., Mentus, S.,& Vujković, M.. (2022). High Al-ion storage of vine shoots-derived activated carbon: New concept for affordable and sustainable supercapacitors. in Journal of Power Sources
Elsevier., 538, 231561.
https://doi.org/10.1016/j.jpowsour.2022.231561

Gezović A, Mišurović J, Milovanović B, Etinski M, Krstić J, Grudić V, Dominko R, Mentus S, Vujković M. High Al-ion storage of vine shoots-derived activated carbon: New concept for affordable and sustainable supercapacitors. in Journal of Power Sources. 2022;538:231561.
doi:10.1016/j.jpowsour.2022.231561 .

Gezović, Aleksandra, Mišurović, Jana, Milovanović, Branislav, Etinski, Mihajlo, Krstić, Jugoslav, Grudić, Veselinka, Dominko, Robert, Mentus, Slavko, Vujković, Milica, "High Al-ion storage of vine shoots-derived activated carbon: New concept for affordable and sustainable supercapacitors" in Journal of Power Sources, 538 (2022):231561,
https://doi.org/10.1016/j.jpowsour.2022.231561 . .

TY  - JOUR
AU  - Zdolšek, Nikola
AU  - Janković, Bojan
AU  - Milović, Miloš
AU  - Brković, Snežana
AU  - Krstić, Jugoslav
AU  - Perović, Ivana
AU  - Vujković, Milica
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5541
AB  - The development of carbon materials with desirable textures and new aqueous electrolytes is the key strategy to improve the performance of supercapacitors. Herein, a deep eutectic solvent (DES) was used for in situ templating of a carbon material. A carbon material was characterized (XRD, N2-physisorption, FTIR, SEM and EDS) and used as an electrode material for the first time in multivalent-based supercapacitors. In situ templating of carbon was performed using a novel DES, which serves as a precursor for carbon and for in situ generation of MgO. The generation of MgO and its roles in templating of carbon were discussed. Templating of carbon with MgO lead to an increase in surface area and a microporous texture. The obtained carbon was tested in multivalent-ion (Al3+ and Mg2+) electrolytes and compared with H2SO4. The charge-storage mechanism was investigated and elaborated. The highest specific capacitance was obtained for the Al(NO3)3 electrolyte, while the operating voltage follows the order: Mg(NO3)2 > Al(NO3)3 > H2SO4. Electrical double-layer capacitance (versus pseudocapacitance) was dominant in all investigated electrolytes. The larger operating voltage in multivalent electrolytes is a consequence of the lower fraction of free water, which suppresses hydrogen evolution (when compared with H2SO4). The GCD was experimentally performed on the Al(NO3)3 electrolyte, which showed good cyclic stability, with an energy density of 22.3 Wh kg−1 at 65 W kg−1.
PB  - MDPI
T2  - Batteries
T1  - Deep Eutectic Solvent (DES) for In Situ Templating Carbon Material: Carbon Characterization and Application in Supercapacitors Containing Multivalent Ions
VL  - 8
IS  - 12
SP  - 284
DO  - 10.3390/batteries8120284
ER  - 

@article{
author = "Zdolšek, Nikola and Janković, Bojan and Milović, Miloš and Brković, Snežana and Krstić, Jugoslav and Perović, Ivana and Vujković, Milica",
year = "2022",
abstract = "The development of carbon materials with desirable textures and new aqueous electrolytes is the key strategy to improve the performance of supercapacitors. Herein, a deep eutectic solvent (DES) was used for in situ templating of a carbon material. A carbon material was characterized (XRD, N2-physisorption, FTIR, SEM and EDS) and used as an electrode material for the first time in multivalent-based supercapacitors. In situ templating of carbon was performed using a novel DES, which serves as a precursor for carbon and for in situ generation of MgO. The generation of MgO and its roles in templating of carbon were discussed. Templating of carbon with MgO lead to an increase in surface area and a microporous texture. The obtained carbon was tested in multivalent-ion (Al3+ and Mg2+) electrolytes and compared with H2SO4. The charge-storage mechanism was investigated and elaborated. The highest specific capacitance was obtained for the Al(NO3)3 electrolyte, while the operating voltage follows the order: Mg(NO3)2 > Al(NO3)3 > H2SO4. Electrical double-layer capacitance (versus pseudocapacitance) was dominant in all investigated electrolytes. The larger operating voltage in multivalent electrolytes is a consequence of the lower fraction of free water, which suppresses hydrogen evolution (when compared with H2SO4). The GCD was experimentally performed on the Al(NO3)3 electrolyte, which showed good cyclic stability, with an energy density of 22.3 Wh kg−1 at 65 W kg−1.",
publisher = "MDPI",
journal = "Batteries",
title = "Deep Eutectic Solvent (DES) for In Situ Templating Carbon Material: Carbon Characterization and Application in Supercapacitors Containing Multivalent Ions",
volume = "8",
number = "12",
pages = "284",
doi = "10.3390/batteries8120284"
}

Zdolšek, N., Janković, B., Milović, M., Brković, S., Krstić, J., Perović, I.,& Vujković, M.. (2022). Deep Eutectic Solvent (DES) for In Situ Templating Carbon Material: Carbon Characterization and Application in Supercapacitors Containing Multivalent Ions. in Batteries
MDPI., 8(12), 284.
https://doi.org/10.3390/batteries8120284

Zdolšek N, Janković B, Milović M, Brković S, Krstić J, Perović I, Vujković M. Deep Eutectic Solvent (DES) for In Situ Templating Carbon Material: Carbon Characterization and Application in Supercapacitors Containing Multivalent Ions. in Batteries. 2022;8(12):284.
doi:10.3390/batteries8120284 .

Zdolšek, Nikola, Janković, Bojan, Milović, Miloš, Brković, Snežana, Krstić, Jugoslav, Perović, Ivana, Vujković, Milica, "Deep Eutectic Solvent (DES) for In Situ Templating Carbon Material: Carbon Characterization and Application in Supercapacitors Containing Multivalent Ions" in Batteries, 8, no. 12 (2022):284,
https://doi.org/10.3390/batteries8120284 . .