TY  - CONF
AU  - Djokić, S.S.
AU  - Nikolić, Nebojša D.
AU  - Živković, Predrag M.
AU  - Popov, Konstantin I.
AU  - Djokić, N.S.
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5592
AB  - Electrodeposition and electroless deposition of metallic powders were comparatively investigated. Electrodeposition of copper is accompanied with the simultaneous hydrogen evolution, which significantly influences the morphology of Cu powder. At lower overpotentials, branched dendrites were produced. At higher overpotentials honeycomb-like deposits of copper were obtained. Formation of silver powders was characterized by the comparison of the exchange and limiting current densities. Instantaneous growth of dendrites starts at low overpotential due to large exchange current density in silver nitrate solution. Formation of powders such as Ni, Co, Ag, Pd and Au from homogenous solutions using an appropriate reducing agent or via galvanic displacement reaction was demonstrated. The hydrolysis of metallic ions is crucial in the deposition metallic powders via electroless deposition from homogenous solutions. Oxides, such as Ag 2O, Cu 2O and CuO, suspended in water can successfully be reduced with an appropriate reducing agent, leading to the precipitation of metallic powders.
C3  - ECS Transactions
T1  - Electrodeposition and electroless deposition of metallic powders: A comparison
EP  - 31
IS  - 18
SP  - 7
VL  - 33
DO  - 10.1149/1.3551487
ER  - 

@conference{
author = "Djokić, S.S. and Nikolić, Nebojša D. and Živković, Predrag M. and Popov, Konstantin I. and Djokić, N.S.",
year = "2011",
abstract = "Electrodeposition and electroless deposition of metallic powders were comparatively investigated. Electrodeposition of copper is accompanied with the simultaneous hydrogen evolution, which significantly influences the morphology of Cu powder. At lower overpotentials, branched dendrites were produced. At higher overpotentials honeycomb-like deposits of copper were obtained. Formation of silver powders was characterized by the comparison of the exchange and limiting current densities. Instantaneous growth of dendrites starts at low overpotential due to large exchange current density in silver nitrate solution. Formation of powders such as Ni, Co, Ag, Pd and Au from homogenous solutions using an appropriate reducing agent or via galvanic displacement reaction was demonstrated. The hydrolysis of metallic ions is crucial in the deposition metallic powders via electroless deposition from homogenous solutions. Oxides, such as Ag 2O, Cu 2O and CuO, suspended in water can successfully be reduced with an appropriate reducing agent, leading to the precipitation of metallic powders.",
journal = "ECS Transactions",
title = "Electrodeposition and electroless deposition of metallic powders: A comparison",
pages = "31-7",
number = "18",
volume = "33",
doi = "10.1149/1.3551487"
}

Djokić, S.S., Nikolić, N. D., Živković, P. M., Popov, K. I.,& Djokić, N.S.. (2011). Electrodeposition and electroless deposition of metallic powders: A comparison. in ECS Transactions, 33(18), 7-31.
https://doi.org/10.1149/1.3551487

Djokić S, Nikolić ND, Živković PM, Popov KI, Djokić N. Electrodeposition and electroless deposition of metallic powders: A comparison. in ECS Transactions. 2011;33(18):7-31.
doi:10.1149/1.3551487 .

Djokić, S.S., Nikolić, Nebojša D., Živković, Predrag M., Popov, Konstantin I., Djokić, N.S., "Electrodeposition and electroless deposition of metallic powders: A comparison" in ECS Transactions, 33, no. 18 (2011):7-31,
https://doi.org/10.1149/1.3551487 . .

TY  - JOUR
AU  - Popov, Konstantin I.
AU  - Živković, Predrag M.
AU  - Krstic, S. B.
AU  - Nikolić, Nebojša D.
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5535
AB  - The conditions under which ohmic controlled metal electrodeposition occurs are discussed using a simple mathematical model. it is shown that ohmic controlled electrodeposition can be operative if the value of the exchange current density for the electrodeposition process is more than 10 times larger than the corresponding value of the limiting diffusion current density. In this case, a linear dependence of the current density on overpotential up to the value of the limiting diffusion current density can be observed. On the other hand, the initiation of dendrite growth under these circumstances is possible, even at very low values of overpotential, at the moment when the limiting diffusion current density is attained in potentiostatic electrodeposition. In this way, instead of a limiting diffusion current density plateau. an inflection point on the polarization curve can be observed, since dendritic growth is followed by an increase in the deposition current density. At the same time. it is shown that the ensemble of tips of dendrites can behave as an ensemble of microelectrodes working independently under mixed or activation control due to the absence of a common diffusion layer. This was confirmed by deposition of copper on a copper dendritic electrode and by silver electrodeposition from a silver nitrate solution onto a graphite substrate.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Electrochimica Acta
T1  - Polarization curves in the ohmic controlled electrodeposition of metals
EP  - 2931
IS  - 10
SP  - 2924
VL  - 54
DO  - 10.1016/j.electacta.2008.11.004
ER  - 

@article{
author = "Popov, Konstantin I. and Živković, Predrag M. and Krstic, S. B. and Nikolić, Nebojša D.",
year = "2009",
abstract = "The conditions under which ohmic controlled metal electrodeposition occurs are discussed using a simple mathematical model. it is shown that ohmic controlled electrodeposition can be operative if the value of the exchange current density for the electrodeposition process is more than 10 times larger than the corresponding value of the limiting diffusion current density. In this case, a linear dependence of the current density on overpotential up to the value of the limiting diffusion current density can be observed. On the other hand, the initiation of dendrite growth under these circumstances is possible, even at very low values of overpotential, at the moment when the limiting diffusion current density is attained in potentiostatic electrodeposition. In this way, instead of a limiting diffusion current density plateau. an inflection point on the polarization curve can be observed, since dendritic growth is followed by an increase in the deposition current density. At the same time. it is shown that the ensemble of tips of dendrites can behave as an ensemble of microelectrodes working independently under mixed or activation control due to the absence of a common diffusion layer. This was confirmed by deposition of copper on a copper dendritic electrode and by silver electrodeposition from a silver nitrate solution onto a graphite substrate.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Electrochimica Acta",
title = "Polarization curves in the ohmic controlled electrodeposition of metals",
pages = "2931-2924",
number = "10",
volume = "54",
doi = "10.1016/j.electacta.2008.11.004"
}

Popov, K. I., Živković, P. M., Krstic, S. B.,& Nikolić, N. D.. (2009). Polarization curves in the ohmic controlled electrodeposition of metals. in Electrochimica Acta
Oxford : Pergamon-Elsevier Science Ltd., 54(10), 2924-2931.
https://doi.org/10.1016/j.electacta.2008.11.004

Popov KI, Živković PM, Krstic SB, Nikolić ND. Polarization curves in the ohmic controlled electrodeposition of metals. in Electrochimica Acta. 2009;54(10):2924-2931.
doi:10.1016/j.electacta.2008.11.004 .

Popov, Konstantin I., Živković, Predrag M., Krstic, S. B., Nikolić, Nebojša D., "Polarization curves in the ohmic controlled electrodeposition of metals" in Electrochimica Acta, 54, no. 10 (2009):2924-2931,
https://doi.org/10.1016/j.electacta.2008.11.004 . .

TY  - JOUR
AU  - Nikolić, Nebojša D.
AU  - Maksimović, Vesna M.
AU  - Pavlović, Miomir
AU  - Popov, Konstantin I.
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5523
AB  - Cross-section analysis of copper deposits electrodeposited in the hydrogen co-deposition range at a constant overpotential and in a pulsating overpotential (PO) regime was performed. It was shown that a complete structural analysis of these technologically very important electrodes is impossible without an analysis of their internal structure. An insight into the compactness (or porosity) of the deposits, as well as into the depth of the holes, can only be obtained by this type of analysis.
AB  - Urađena je analiza poprečnih preseka taloga bakra dobijenih u oblasti ko-depozicije vodonika na konstantnoj prenapetosti i režimom pulsirajuće prenapetosti. Pokazano je da kompletna strukturna analiza ovih tehnološki veoma važnih elektroda nije moguća bez analize njihove unutrašnje strukture. Uvid u kompaktnost (ili poroznost) taloga, kao i u dubinu rupa može da se dobije samo ovim tipom analize.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Cross-section analysis of the morphology of electrodeposited copper obtained in the hydrogen co-deposition range
T1  - Morfologija poprečnog preseka prevlaka bakra dobijenih elektrohemijskim taloženjem u oblasti ko-depozicije vodonika
EP  - 696
IS  - 6
SP  - 689
VL  - 74
DO  - 10.2298/JSC0906689N
ER  - 

@article{
author = "Nikolić, Nebojša D. and Maksimović, Vesna M. and Pavlović, Miomir and Popov, Konstantin I.",
year = "2009",
abstract = "Cross-section analysis of copper deposits electrodeposited in the hydrogen co-deposition range at a constant overpotential and in a pulsating overpotential (PO) regime was performed. It was shown that a complete structural analysis of these technologically very important electrodes is impossible without an analysis of their internal structure. An insight into the compactness (or porosity) of the deposits, as well as into the depth of the holes, can only be obtained by this type of analysis., Urađena je analiza poprečnih preseka taloga bakra dobijenih u oblasti ko-depozicije vodonika na konstantnoj prenapetosti i režimom pulsirajuće prenapetosti. Pokazano je da kompletna strukturna analiza ovih tehnološki veoma važnih elektroda nije moguća bez analize njihove unutrašnje strukture. Uvid u kompaktnost (ili poroznost) taloga, kao i u dubinu rupa može da se dobije samo ovim tipom analize.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Cross-section analysis of the morphology of electrodeposited copper obtained in the hydrogen co-deposition range, Morfologija poprečnog preseka prevlaka bakra dobijenih elektrohemijskim taloženjem u oblasti ko-depozicije vodonika",
pages = "696-689",
number = "6",
volume = "74",
doi = "10.2298/JSC0906689N"
}

Nikolić, N. D., Maksimović, V. M., Pavlović, M.,& Popov, K. I.. (2009). Cross-section analysis of the morphology of electrodeposited copper obtained in the hydrogen co-deposition range. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 74(6), 689-696.
https://doi.org/10.2298/JSC0906689N

Nikolić ND, Maksimović VM, Pavlović M, Popov KI. Cross-section analysis of the morphology of electrodeposited copper obtained in the hydrogen co-deposition range. in Journal of the Serbian Chemical Society. 2009;74(6):689-696.
doi:10.2298/JSC0906689N .

Nikolić, Nebojša D., Maksimović, Vesna M., Pavlović, Miomir, Popov, Konstantin I., "Cross-section analysis of the morphology of electrodeposited copper obtained in the hydrogen co-deposition range" in Journal of the Serbian Chemical Society, 74, no. 6 (2009):689-696,
https://doi.org/10.2298/JSC0906689N . .

TY  - JOUR
AU  - Nikolić, Nebojša D.
AU  - Pavlovic, Lj. J.
AU  - Krstic, S. B.
AU  - Pavlović, Miomir
AU  - Popov, Konstantin I.
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5557
AB  - The relative concentration of hydrogen ion (H(+)) as a function of sulfuric acid (H(2)SO(4)) concentration (calculated using Pitzer's model) and the electrochemical processes by which irregular copper deposits are formed were correlated. Irregular deposits are formed by potentiostatic electrodeposition at a high overpotential where the hydrogen evolution reaction occurs parallel to copper electrodeposition. Two sets of acid sulfate solutions were analyzed. In one set of experiments, the concentration of CuSO(4) was constant while the concentration of H(2)SO(4) was varied. The other set of experiments was performed with a constant concentration of H(2)SO(4) and different concentrations of CuSO(4). Then, the volumes of the evolved hydrogen (calculated as the average current efficiencies of hydrogen evolution) and the morphologies of copper deposits, characterized by the SEM technique, obtained for the same ratio of CuSO(4)/H(2)SO(4) were mutually compared and discussed in terms of the relative concentrations of hydrogen ions (H(+)) as a function of the H(2)SO(4) concentration. Good agreement between the ionic equilibrium in the CuSO(4)-H(2)SO(4)-H(2)O system and the results of the electrochemical processes was obtained. In this way, it was shown how this ionic equilibrium can be applied to predict and analyze the solution composition in electrolytic copper deposition processes.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Chemical Engineering Science
T1  - Influence of ionic equilibrium in the CuSO(4)-H(2)SO(4)-H(2)O system on the formation of irregular electrodeposits of copper
EP  - 2828
IS  - 10
SP  - 2824
VL  - 63
DO  - 10.1016/j.ces.2008.02.022
ER  - 

@article{
author = "Nikolić, Nebojša D. and Pavlovic, Lj. J. and Krstic, S. B. and Pavlović, Miomir and Popov, Konstantin I.",
year = "2008",
abstract = "The relative concentration of hydrogen ion (H(+)) as a function of sulfuric acid (H(2)SO(4)) concentration (calculated using Pitzer's model) and the electrochemical processes by which irregular copper deposits are formed were correlated. Irregular deposits are formed by potentiostatic electrodeposition at a high overpotential where the hydrogen evolution reaction occurs parallel to copper electrodeposition. Two sets of acid sulfate solutions were analyzed. In one set of experiments, the concentration of CuSO(4) was constant while the concentration of H(2)SO(4) was varied. The other set of experiments was performed with a constant concentration of H(2)SO(4) and different concentrations of CuSO(4). Then, the volumes of the evolved hydrogen (calculated as the average current efficiencies of hydrogen evolution) and the morphologies of copper deposits, characterized by the SEM technique, obtained for the same ratio of CuSO(4)/H(2)SO(4) were mutually compared and discussed in terms of the relative concentrations of hydrogen ions (H(+)) as a function of the H(2)SO(4) concentration. Good agreement between the ionic equilibrium in the CuSO(4)-H(2)SO(4)-H(2)O system and the results of the electrochemical processes was obtained. In this way, it was shown how this ionic equilibrium can be applied to predict and analyze the solution composition in electrolytic copper deposition processes.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Chemical Engineering Science",
title = "Influence of ionic equilibrium in the CuSO(4)-H(2)SO(4)-H(2)O system on the formation of irregular electrodeposits of copper",
pages = "2828-2824",
number = "10",
volume = "63",
doi = "10.1016/j.ces.2008.02.022"
}

Nikolić, N. D., Pavlovic, Lj. J., Krstic, S. B., Pavlović, M.,& Popov, K. I.. (2008). Influence of ionic equilibrium in the CuSO(4)-H(2)SO(4)-H(2)O system on the formation of irregular electrodeposits of copper. in Chemical Engineering Science
Oxford : Pergamon-Elsevier Science Ltd., 63(10), 2824-2828.
https://doi.org/10.1016/j.ces.2008.02.022

Nikolić ND, Pavlovic LJ, Krstic SB, Pavlović M, Popov KI. Influence of ionic equilibrium in the CuSO(4)-H(2)SO(4)-H(2)O system on the formation of irregular electrodeposits of copper. in Chemical Engineering Science. 2008;63(10):2824-2828.
doi:10.1016/j.ces.2008.02.022 .

Nikolić, Nebojša D., Pavlovic, Lj. J., Krstic, S. B., Pavlović, Miomir, Popov, Konstantin I., "Influence of ionic equilibrium in the CuSO(4)-H(2)SO(4)-H(2)O system on the formation of irregular electrodeposits of copper" in Chemical Engineering Science, 63, no. 10 (2008):2824-2828,
https://doi.org/10.1016/j.ces.2008.02.022 . .