TY  - JOUR
AU  - Gojgić, Jelena D.
AU  - Petričević, Aleksandar M.
AU  - Krstajić Pajić, Mila N.
AU  - Jović, Vladimir D.
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7409
AB  - The example of the procedure for the correct determination of the parameters of hydrogen evolution reaction (HER), the exchange current density (jo) and relaxation time (τo) for intermediate (adsorbed hydrogen, Hads) adsorption at modified porous Ni-based electrode are presented in this work. Such a procedure is applicable for the HER at all electrode materials. The value of jo was obtained from the intercept at η = 0 mV from the η vs. log (Rct-1) dependence (η-overpotential), while the value of τo was obtained from the intercept at η = 0 mV from the logτ vs. η dependence. It was shown that for the correct determination of jo and τo, it is necessary to correct applied η for the jRs drop, by recording current density (j) for applied η and correcting it for jRs.
AB  - Na primeru izdvajanja vodonika na Ni-Sn/Ni pena 800 elektrodi u ovom radu je prikazana procedura korektnog određivanja parametara ove reakcije, a to su: gustina struje izmene (jo) i relaksaciono vreme adsorpcije intermedijara () (Hads). Vrednost jo je određena iz odsečka za  = 0 mV zavisnosti  vs. log(Rct-1 ) ( - prenapetost), dok je vrednost o određena iz odsečka za  = 0 mV zavisnosti log vs. . Pokazano je da je za korektno određivanje ovih parametara neophodno korigovati gustinu struje pri svakoj zadatoj prenapetosti za vrednost omskog pada napona jRs.
PB  - Inženjersko društvo za koroziju
T2  - Zaštita materijala
T1  - Correct determination of the hydrogen evolution reaction parameters at Ni foam electrode modified by electrodeposited Ni-Sn alloy layer
T1  - Procedura korektnog određivanja parametara reakcije izdvajanja vodonika na elektrodi od Ni pene modifikovane elektrohemijski istaloženom Ni-Sn legurom
EP  - 10
IS  - 1
SP  - 3
VL  - 65
DO  - 10.62638/zasmat1039
ER  - 

@article{
author = "Gojgić, Jelena D. and Petričević, Aleksandar M. and Krstajić Pajić, Mila N. and Jović, Vladimir D.",
year = "2024",
abstract = "The example of the procedure for the correct determination of the parameters of hydrogen evolution reaction (HER), the exchange current density (jo) and relaxation time (τo) for intermediate (adsorbed hydrogen, Hads) adsorption at modified porous Ni-based electrode are presented in this work. Such a procedure is applicable for the HER at all electrode materials. The value of jo was obtained from the intercept at η = 0 mV from the η vs. log (Rct-1) dependence (η-overpotential), while the value of τo was obtained from the intercept at η = 0 mV from the logτ vs. η dependence. It was shown that for the correct determination of jo and τo, it is necessary to correct applied η for the jRs drop, by recording current density (j) for applied η and correcting it for jRs., Na primeru izdvajanja vodonika na Ni-Sn/Ni pena 800 elektrodi u ovom radu je prikazana procedura korektnog određivanja parametara ove reakcije, a to su: gustina struje izmene (jo) i relaksaciono vreme adsorpcije intermedijara () (Hads). Vrednost jo je određena iz odsečka za  = 0 mV zavisnosti  vs. log(Rct-1 ) ( - prenapetost), dok je vrednost o određena iz odsečka za  = 0 mV zavisnosti log vs. . Pokazano je da je za korektno određivanje ovih parametara neophodno korigovati gustinu struje pri svakoj zadatoj prenapetosti za vrednost omskog pada napona jRs.",
publisher = "Inženjersko društvo za koroziju",
journal = "Zaštita materijala",
title = "Correct determination of the hydrogen evolution reaction parameters at Ni foam electrode modified by electrodeposited Ni-Sn alloy layer, Procedura korektnog određivanja parametara reakcije izdvajanja vodonika na elektrodi od Ni pene modifikovane elektrohemijski istaloženom Ni-Sn legurom",
pages = "10-3",
number = "1",
volume = "65",
doi = "10.62638/zasmat1039"
}

Gojgić, J. D., Petričević, A. M., Krstajić Pajić, M. N.,& Jović, V. D.. (2024). Correct determination of the hydrogen evolution reaction parameters at Ni foam electrode modified by electrodeposited Ni-Sn alloy layer. in Zaštita materijala
Inženjersko društvo za koroziju., 65(1), 3-10.
https://doi.org/10.62638/zasmat1039

Gojgić JD, Petričević AM, Krstajić Pajić MN, Jović VD. Correct determination of the hydrogen evolution reaction parameters at Ni foam electrode modified by electrodeposited Ni-Sn alloy layer. in Zaštita materijala. 2024;65(1):3-10.
doi:10.62638/zasmat1039 .

Gojgić, Jelena D., Petričević, Aleksandar M., Krstajić Pajić, Mila N., Jović, Vladimir D., "Correct determination of the hydrogen evolution reaction parameters at Ni foam electrode modified by electrodeposited Ni-Sn alloy layer" in Zaštita materijala, 65, no. 1 (2024):3-10,
https://doi.org/10.62638/zasmat1039 . .

TY  - JOUR
AU  - Petričević, Aleksandar
AU  - Jović, Vladimir D.
AU  - Krstajić Pajić, Mila N.
AU  - Zabinski, Piotr
AU  - Elezović, Nevenka R.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5353
AB  - Catalytic activity towards the oxygen reduction reaction (ORR) in 0.5 M H2SO4 was investigated at sub-monolayers and ultra-thin layers (corresponding to 10, 30 and 100 monolayers, (MLs)) of Pt electrochemically deposited on (Nb-Ti)2AlC substrate. Electrochemical deposition of Pt layers on (Nb-Ti)2AlC substrate was achieved from the solution containing 3 mM K2PtCl4 + 0.5 M NaCl (pH 4) under the conditions of convective diffusion (RPM = 400) using linear sweep voltammetry (LSV) at a sweep rate of 2 mV s-1, by determining limiting potential for deposition of each Pt sample from the QPt vs. E curves. The Pt samples were characterized X-ray photoelectron spectroscopy (XPS). XPS analysis showed that practically the whole surface of (Nb-Ti)2AlC substrate is covered with homogeneous layer of Pt, while Pt ion reduction was complete to metallic form – Pt(0) valence state. Then oxygen reduction was studied at rotating disc electrode by cyclic voltammetry and linear sweep voltammetry. Two different Tafel slopes were observed, one close to 60 mV dec-1 in low current densities region and second one ~ 120 mV dec-1 in high current densities region. This novel catalyst exhibited higher activity in comparison to carbon supported one, in terms of mass activity – kinetic current density normalized to Pt loading.
AB  - Ispitivana je reakcija redukcije kiseonika na tankim slojevima platine u 0.5 mol dm-3 H2SO4. Tanki
slojevi platine – čija količina naelektrisanja odgovara 10, 30 i 100 teorijskih monoslojeva Pt su
istaloženi na nosaču od (Nb-Ti)2AlC. Za elektrohemijsko taloženje je korišćen rastvor 3 mM
K2PtCl4 + 0.5 M NaCl pH = 4, u uslovima konvektivne difuzije (RPM = 400) primenom metode
linearne skenirajuće voltametrije (LSV) pri brzini promene potencijala od 2 mV s-1
. Elektrohemijski
dobijeni platinski katalizatori na pomenutom nosaču su okarakterisani metodom fotoelektronske
spektroskopija X-zraka (XPS), kao i elektrohemijskim tehnikama.
Za određivanje realne elektrohemijski aktivne površine elektrode je primenjena ciklična
voltametrija, integracijom ispod anodnog dela voltamograma u oblasti adsorpcije vodonika na
potpotencijalima. Za ispitivanje kinetike reakcije redukcije kiseonika je korišćena metoda linearne
skenirajuće voltametrije na rotirajućoj disk elektrodi. Dobijene su dve vrednosti Tafelovog nagiba,
jedna približno 60 mV dek-1
u oblasti malih prenapetosti, a druga ~ 120 mV dek-1
, u oblasti većih
gustina struje. Katalitička aktivnost katalizatora je poređena sa vrednostima iz literature dobijenim
na platini na ugljeničim nosačima na 0.85 V prema reverzibilnoj vodoničnoj elektrodi, izražena kao
kinetička gustina struje po realnoj površini electrode, ili specifična aktivnost – izražena kao
kinetička gustina struje po masi platine. Pokazano je da katalizator sa 10 monoslojeva platine
poseduje veoma dobru katalitičku aktivnost, posebno izraženu po masi istaložene platine.
PB  - Engineers Society for Corrosion
T2  - Zaštita materijala
T1  - Oxygen reduction reaction on electrochemically deposited sub-monolayers and ultra-thin layers of Pt on (Nb-Ti)2AlC substrate
T1  - Reakcija redukcije kiseonika na elektrohemijski istaloženim tankim slojevima platine na (Nb-Ti)2alc nosaču
EP  - 164
IS  - 2
SP  - 153
VL  - 63
DO  - 10.5937/zasmat2202153P
ER  - 

@article{
author = "Petričević, Aleksandar and Jović, Vladimir D. and Krstajić Pajić, Mila N. and Zabinski, Piotr and Elezović, Nevenka R.",
year = "2022",
abstract = "Catalytic activity towards the oxygen reduction reaction (ORR) in 0.5 M H2SO4 was investigated at sub-monolayers and ultra-thin layers (corresponding to 10, 30 and 100 monolayers, (MLs)) of Pt electrochemically deposited on (Nb-Ti)2AlC substrate. Electrochemical deposition of Pt layers on (Nb-Ti)2AlC substrate was achieved from the solution containing 3 mM K2PtCl4 + 0.5 M NaCl (pH 4) under the conditions of convective diffusion (RPM = 400) using linear sweep voltammetry (LSV) at a sweep rate of 2 mV s-1, by determining limiting potential for deposition of each Pt sample from the QPt vs. E curves. The Pt samples were characterized X-ray photoelectron spectroscopy (XPS). XPS analysis showed that practically the whole surface of (Nb-Ti)2AlC substrate is covered with homogeneous layer of Pt, while Pt ion reduction was complete to metallic form – Pt(0) valence state. Then oxygen reduction was studied at rotating disc electrode by cyclic voltammetry and linear sweep voltammetry. Two different Tafel slopes were observed, one close to 60 mV dec-1 in low current densities region and second one ~ 120 mV dec-1 in high current densities region. This novel catalyst exhibited higher activity in comparison to carbon supported one, in terms of mass activity – kinetic current density normalized to Pt loading., Ispitivana je reakcija redukcije kiseonika na tankim slojevima platine u 0.5 mol dm-3 H2SO4. Tanki
slojevi platine – čija količina naelektrisanja odgovara 10, 30 i 100 teorijskih monoslojeva Pt su
istaloženi na nosaču od (Nb-Ti)2AlC. Za elektrohemijsko taloženje je korišćen rastvor 3 mM
K2PtCl4 + 0.5 M NaCl pH = 4, u uslovima konvektivne difuzije (RPM = 400) primenom metode
linearne skenirajuće voltametrije (LSV) pri brzini promene potencijala od 2 mV s-1
. Elektrohemijski
dobijeni platinski katalizatori na pomenutom nosaču su okarakterisani metodom fotoelektronske
spektroskopija X-zraka (XPS), kao i elektrohemijskim tehnikama.
Za određivanje realne elektrohemijski aktivne površine elektrode je primenjena ciklična
voltametrija, integracijom ispod anodnog dela voltamograma u oblasti adsorpcije vodonika na
potpotencijalima. Za ispitivanje kinetike reakcije redukcije kiseonika je korišćena metoda linearne
skenirajuće voltametrije na rotirajućoj disk elektrodi. Dobijene su dve vrednosti Tafelovog nagiba,
jedna približno 60 mV dek-1
u oblasti malih prenapetosti, a druga ~ 120 mV dek-1
, u oblasti većih
gustina struje. Katalitička aktivnost katalizatora je poređena sa vrednostima iz literature dobijenim
na platini na ugljeničim nosačima na 0.85 V prema reverzibilnoj vodoničnoj elektrodi, izražena kao
kinetička gustina struje po realnoj površini electrode, ili specifična aktivnost – izražena kao
kinetička gustina struje po masi platine. Pokazano je da katalizator sa 10 monoslojeva platine
poseduje veoma dobru katalitičku aktivnost, posebno izraženu po masi istaložene platine.",
publisher = "Engineers Society for Corrosion",
journal = "Zaštita materijala",
title = "Oxygen reduction reaction on electrochemically deposited sub-monolayers and ultra-thin layers of Pt on (Nb-Ti)2AlC substrate, Reakcija redukcije kiseonika na elektrohemijski istaloženim tankim slojevima platine na (Nb-Ti)2alc nosaču",
pages = "164-153",
number = "2",
volume = "63",
doi = "10.5937/zasmat2202153P"
}

Petričević, A., Jović, V. D., Krstajić Pajić, M. N., Zabinski, P.,& Elezović, N. R.. (2022). Oxygen reduction reaction on electrochemically deposited sub-monolayers and ultra-thin layers of Pt on (Nb-Ti)2AlC substrate. in Zaštita materijala
Engineers Society for Corrosion., 63(2), 153-164.
https://doi.org/10.5937/zasmat2202153P

Petričević A, Jović VD, Krstajić Pajić MN, Zabinski P, Elezović NR. Oxygen reduction reaction on electrochemically deposited sub-monolayers and ultra-thin layers of Pt on (Nb-Ti)2AlC substrate. in Zaštita materijala. 2022;63(2):153-164.
doi:10.5937/zasmat2202153P .

Petričević, Aleksandar, Jović, Vladimir D., Krstajić Pajić, Mila N., Zabinski, Piotr, Elezović, Nevenka R., "Oxygen reduction reaction on electrochemically deposited sub-monolayers and ultra-thin layers of Pt on (Nb-Ti)2AlC substrate" in Zaštita materijala, 63, no. 2 (2022):153-164,
https://doi.org/10.5937/zasmat2202153P . .

TY  - CONF
AU  - Mijailović, Daniel
AU  - Lačnjevac, Uroš
AU  - Jović, Vladimir
AU  - Stojanović, Dušica
AU  - Radmilović, Vuk
AU  - Radmilović, Velimir
AU  - Uskoković, Petar
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5979
AB  - Herein, a novel composite material of coupled carbon fibers and Co1.5Mn1.5O4 spinel oxide crystals has
been fabricated by a facile twoͲstage process. In the first stage, fibers were produced by singleͲspinneret
electrospinning of polymer solutions with the cobalt and manganese acetate precursors. In the second stage, fibers
were heatͲtreated to convert them into composite structure. Scanning electron microscopy (SEM) analysis confirmed
the formation of composite fibers with spinel crystals deposited on the surface. Scanning transmission electron
microscopy (STEM) and energy dispersive XͲray spectroscopy (EDS) analysis of composite fibers crossͲsection revealed
that carbon occupies space inside spinel rings. The composite electrode delivers a specific capacity of about 740 mAh
g
–1, at a current density of 5 A g–1 in alkaline solution, which is more than 37 times superior to neat carbon fibers.
Furthermore, the electrode retained 135% of its initial capacity, after 1000 cycles of galvanostatic charge/discharge at
5 A gо1.
PB  - Faculty of Mechanical engineering, University of Belgrade
C3  - YOUng ResearcherS Conference 2019
T1  - Synthesis and Supercapacitive Performances of Electrospun Carbon Nanofibers Decorated with Spinel Co1.5Mn1.5O4 Nanocrystals
EP  - 20
SP  - 17
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5979
ER  - 

@conference{
author = "Mijailović, Daniel and Lačnjevac, Uroš and Jović, Vladimir and Stojanović, Dušica and Radmilović, Vuk and Radmilović, Velimir and Uskoković, Petar",
year = "2019",
abstract = "Herein, a novel composite material of coupled carbon fibers and Co1.5Mn1.5O4 spinel oxide crystals has
been fabricated by a facile twoͲstage process. In the first stage, fibers were produced by singleͲspinneret
electrospinning of polymer solutions with the cobalt and manganese acetate precursors. In the second stage, fibers
were heatͲtreated to convert them into composite structure. Scanning electron microscopy (SEM) analysis confirmed
the formation of composite fibers with spinel crystals deposited on the surface. Scanning transmission electron
microscopy (STEM) and energy dispersive XͲray spectroscopy (EDS) analysis of composite fibers crossͲsection revealed
that carbon occupies space inside spinel rings. The composite electrode delivers a specific capacity of about 740 mAh
g
–1, at a current density of 5 A g–1 in alkaline solution, which is more than 37 times superior to neat carbon fibers.
Furthermore, the electrode retained 135% of its initial capacity, after 1000 cycles of galvanostatic charge/discharge at
5 A gо1.",
publisher = "Faculty of Mechanical engineering, University of Belgrade",
journal = "YOUng ResearcherS Conference 2019",
title = "Synthesis and Supercapacitive Performances of Electrospun Carbon Nanofibers Decorated with Spinel Co1.5Mn1.5O4 Nanocrystals",
pages = "20-17",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5979"
}

Mijailović, D., Lačnjevac, U., Jović, V., Stojanović, D., Radmilović, V., Radmilović, V.,& Uskoković, P.. (2019). Synthesis and Supercapacitive Performances of Electrospun Carbon Nanofibers Decorated with Spinel Co1.5Mn1.5O4 Nanocrystals. in YOUng ResearcherS Conference 2019
Faculty of Mechanical engineering, University of Belgrade., 17-20.
https://hdl.handle.net/21.15107/rcub_technorep_5979

Mijailović D, Lačnjevac U, Jović V, Stojanović D, Radmilović V, Radmilović V, Uskoković P. Synthesis and Supercapacitive Performances of Electrospun Carbon Nanofibers Decorated with Spinel Co1.5Mn1.5O4 Nanocrystals. in YOUng ResearcherS Conference 2019. 2019;:17-20.
https://hdl.handle.net/21.15107/rcub_technorep_5979 .

Mijailović, Daniel, Lačnjevac, Uroš, Jović, Vladimir, Stojanović, Dušica, Radmilović, Vuk, Radmilović, Velimir, Uskoković, Petar, "Synthesis and Supercapacitive Performances of Electrospun Carbon Nanofibers Decorated with Spinel Co1.5Mn1.5O4 Nanocrystals" in YOUng ResearcherS Conference 2019 (2019):17-20,
https://hdl.handle.net/21.15107/rcub_technorep_5979 .

TY  - JOUR
AU  - Jović, Borka
AU  - Lačnjevac, Uroš
AU  - Jović, Vladimir
AU  - Gajić Krstajić, Ljiljana
AU  - Kovač, Janez
AU  - Poleti, Dejan
AU  - Krstajić, Nedeljko
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5833
AB  - The oxygen evolution reaction (OER) was studied at pure Ni and Ni-(Ebonex/Ir) composite coatings in 1 M NaOH solution at 25 °C. Ni-(Ebonex-supported Ir) coatings were electrodeposited from a nickel Watts bath containing different concentrations of suspended Ebonex/Ir particles (0–2 g dm−3) onto a Ni 40 mesh substrate. The surface morphology of the coatings was examined by scanning electron microscopy (SEM), the surface composition by energy dispersive X-ray spectroscopy (EDS), X-ray powder diffraction (XRPD) and X-ray photoelectron spectroscopy (XPS), whereas the electrochemical properties were studied by electrochemical impedance spectroscopy (EIS), polarization measurements and cyclic voltammetry (CV). It was shown that the roughness factor of Ni-(Ebonex/Ir) composite coatings calculated relative to the surface area of the pure Ni sample increased with the increasing content of Ebonex/Ir particles in the bath to a maximum value of 40.6. All samples displayed a Tafel slope of about 60 mV dec−1 in the potential range corresponding to lower current densities for the OER. The increase of the apparent activity for the OER at Ni-(Ebonex/Ir) coatings compared with the pure Ni coating was attributed only to the increase of the electrochemically active surface area. Although the pure Ni coating initially exhibited higher intrinsic catalytic activity for the OER than the composite coatings, it also showed a drastic loss of activity after subjecting to continuous oxygen evolution at j = 50 mA cm−2 for 24 h (ΔE = 395 mV). At the same time, the OER overpotential at Ni-(Ebonex/Ir) coatings only negligibly increased after the stability test (ΔE = 22 mV). The improved retention of catalytic activity observed with Ni-(Ebonex/Ir) coatings was ascribed to the presence of IrO2, which inhibited the formation of the inactive γ-NiOOH phase.
PB  - Elsevier Ltd.
T2  - International Journal of Hydrogen Energy
T1  - Ni-(Ebonex-supported Ir) composite coatings as electrocatalysts for alkaline water electrolysis. Part II: Oxygen evolution
EP  - 20514
IS  - 45
SP  - 20502
VL  - 41
DO  - 10.1016/j.ijhydene.2016.08.226
UR  - https://hdl.handle.net/21.15107/rcub_dais_15978
ER  - 

@article{
author = "Jović, Borka and Lačnjevac, Uroš and Jović, Vladimir and Gajić Krstajić, Ljiljana and Kovač, Janez and Poleti, Dejan and Krstajić, Nedeljko",
year = "2016",
abstract = "The oxygen evolution reaction (OER) was studied at pure Ni and Ni-(Ebonex/Ir) composite coatings in 1 M NaOH solution at 25 °C. Ni-(Ebonex-supported Ir) coatings were electrodeposited from a nickel Watts bath containing different concentrations of suspended Ebonex/Ir particles (0–2 g dm−3) onto a Ni 40 mesh substrate. The surface morphology of the coatings was examined by scanning electron microscopy (SEM), the surface composition by energy dispersive X-ray spectroscopy (EDS), X-ray powder diffraction (XRPD) and X-ray photoelectron spectroscopy (XPS), whereas the electrochemical properties were studied by electrochemical impedance spectroscopy (EIS), polarization measurements and cyclic voltammetry (CV). It was shown that the roughness factor of Ni-(Ebonex/Ir) composite coatings calculated relative to the surface area of the pure Ni sample increased with the increasing content of Ebonex/Ir particles in the bath to a maximum value of 40.6. All samples displayed a Tafel slope of about 60 mV dec−1 in the potential range corresponding to lower current densities for the OER. The increase of the apparent activity for the OER at Ni-(Ebonex/Ir) coatings compared with the pure Ni coating was attributed only to the increase of the electrochemically active surface area. Although the pure Ni coating initially exhibited higher intrinsic catalytic activity for the OER than the composite coatings, it also showed a drastic loss of activity after subjecting to continuous oxygen evolution at j = 50 mA cm−2 for 24 h (ΔE = 395 mV). At the same time, the OER overpotential at Ni-(Ebonex/Ir) coatings only negligibly increased after the stability test (ΔE = 22 mV). The improved retention of catalytic activity observed with Ni-(Ebonex/Ir) coatings was ascribed to the presence of IrO2, which inhibited the formation of the inactive γ-NiOOH phase.",
publisher = "Elsevier Ltd.",
journal = "International Journal of Hydrogen Energy",
title = "Ni-(Ebonex-supported Ir) composite coatings as electrocatalysts for alkaline water electrolysis. Part II: Oxygen evolution",
pages = "20514-20502",
number = "45",
volume = "41",
doi = "10.1016/j.ijhydene.2016.08.226",
url = "https://hdl.handle.net/21.15107/rcub_dais_15978"
}

Jović, B., Lačnjevac, U., Jović, V., Gajić Krstajić, L., Kovač, J., Poleti, D.,& Krstajić, N.. (2016). Ni-(Ebonex-supported Ir) composite coatings as electrocatalysts for alkaline water electrolysis. Part II: Oxygen evolution. in International Journal of Hydrogen Energy
Elsevier Ltd.., 41(45), 20502-20514.
https://doi.org/10.1016/j.ijhydene.2016.08.226
https://hdl.handle.net/21.15107/rcub_dais_15978

Jović B, Lačnjevac U, Jović V, Gajić Krstajić L, Kovač J, Poleti D, Krstajić N. Ni-(Ebonex-supported Ir) composite coatings as electrocatalysts for alkaline water electrolysis. Part II: Oxygen evolution. in International Journal of Hydrogen Energy. 2016;41(45):20502-20514.
doi:10.1016/j.ijhydene.2016.08.226
https://hdl.handle.net/21.15107/rcub_dais_15978 .

Jović, Borka, Lačnjevac, Uroš, Jović, Vladimir, Gajić Krstajić, Ljiljana, Kovač, Janez, Poleti, Dejan, Krstajić, Nedeljko, "Ni-(Ebonex-supported Ir) composite coatings as electrocatalysts for alkaline water electrolysis. Part II: Oxygen evolution" in International Journal of Hydrogen Energy, 41, no. 45 (2016):20502-20514,
https://doi.org/10.1016/j.ijhydene.2016.08.226 .,
https://hdl.handle.net/21.15107/rcub_dais_15978 .

TY  - JOUR
AU  - Lačnjevac, Uroš
AU  - Jović, Borka
AU  - Gajić Krstajić, Ljiljana
AU  - Kovač, Janez
AU  - Jović, Vladimir
AU  - Krstajić, Nedeljko
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5725
AB  - The aim of this work was to investigate the possibility of preparation of the composite Cr–MoO2 coatings onto steel and titanium substrates as cathode materials with high selective properties which imply the suppression of hypochlorite reduction as a side reaction during hypochlorite commercial production. The electrodes were prepared by simultaneous deposition of chromium and suspended MoO2 particles on titanium substrate from acid chromium (VI) bath. The current efficiency for electrodeposition of the composite coatings did not vary significantly with the concentration of suspended MoO2 particles. The content of molybdenum in the deposits was relatively low (0.2–1.5 at.%) and increased with increasing the concentration of suspended MoO2 particles in the bath, in the range from 0 to 10 g dm−3. With further increase in the concentration of MoO2, the content of molybdenum in the coating varied insignificantly.X-ray photoelectron spectroscopy-XPS and EDS analysis were applied to analyze elemental composition and chemical bonding of elements on the surface and in the sub-surface region of obtained coatings. When the concentration of MoO2 particles in the bath was raised above 5 g dm−3, the appearance of the coating changed from the typical pure chromium deposit to needle-like deposit with the appearance of black inclusions on the surface. XPS analysis and corresponding Cr 2p spectra showed the presence of chromium oxide, probably Cr2O3 with Cr(3+) valence state on the surface and in the sub-surface region of Cr–MoO2 coatings.Investigation of the current efficiency for the hydrogen evolution reaction (HER) on Cr–MoO2 cathodes showed that it increased with the increase of the content of MoO2 particles in the coating, exceeding the value of 97% in the solution with the hypochlorite concentration of 0.21 mol dm−3. Under the same conditions, the current efficiency for the HER on Ti and Ti/Cr cathodes is very low (≈20%), and corresponding polarization curves confirmed the fact that the side reaction of hypochlorite reduction takes place in the diffusion-controlled regime on these electrodes. The high selectivity of Cr–MoO2 coating is probably caused by the presence of chromium oxide (hydroxide) formed at the surface of the coating during co-deposition of Cr and MoO2 particles, which prevents hypochlorite reduction on the cathode during the HER.
PB  - Elsevier
T2  - Electrochimica Acta
T1  - Ti substrate coated with composite Cr–MoO2 coatings as highly selective cathode materials in hypochlorite production
EP  - 42
SP  - 34
VL  - 96
DO  - 10.1016/j.electacta.2013.02.086
UR  - https://hdl.handle.net/21.15107/rcub_dais_358
ER  - 

@article{
author = "Lačnjevac, Uroš and Jović, Borka and Gajić Krstajić, Ljiljana and Kovač, Janez and Jović, Vladimir and Krstajić, Nedeljko",
year = "2013",
abstract = "The aim of this work was to investigate the possibility of preparation of the composite Cr–MoO2 coatings onto steel and titanium substrates as cathode materials with high selective properties which imply the suppression of hypochlorite reduction as a side reaction during hypochlorite commercial production. The electrodes were prepared by simultaneous deposition of chromium and suspended MoO2 particles on titanium substrate from acid chromium (VI) bath. The current efficiency for electrodeposition of the composite coatings did not vary significantly with the concentration of suspended MoO2 particles. The content of molybdenum in the deposits was relatively low (0.2–1.5 at.%) and increased with increasing the concentration of suspended MoO2 particles in the bath, in the range from 0 to 10 g dm−3. With further increase in the concentration of MoO2, the content of molybdenum in the coating varied insignificantly.X-ray photoelectron spectroscopy-XPS and EDS analysis were applied to analyze elemental composition and chemical bonding of elements on the surface and in the sub-surface region of obtained coatings. When the concentration of MoO2 particles in the bath was raised above 5 g dm−3, the appearance of the coating changed from the typical pure chromium deposit to needle-like deposit with the appearance of black inclusions on the surface. XPS analysis and corresponding Cr 2p spectra showed the presence of chromium oxide, probably Cr2O3 with Cr(3+) valence state on the surface and in the sub-surface region of Cr–MoO2 coatings.Investigation of the current efficiency for the hydrogen evolution reaction (HER) on Cr–MoO2 cathodes showed that it increased with the increase of the content of MoO2 particles in the coating, exceeding the value of 97% in the solution with the hypochlorite concentration of 0.21 mol dm−3. Under the same conditions, the current efficiency for the HER on Ti and Ti/Cr cathodes is very low (≈20%), and corresponding polarization curves confirmed the fact that the side reaction of hypochlorite reduction takes place in the diffusion-controlled regime on these electrodes. The high selectivity of Cr–MoO2 coating is probably caused by the presence of chromium oxide (hydroxide) formed at the surface of the coating during co-deposition of Cr and MoO2 particles, which prevents hypochlorite reduction on the cathode during the HER.",
publisher = "Elsevier",
journal = "Electrochimica Acta",
title = "Ti substrate coated with composite Cr–MoO2 coatings as highly selective cathode materials in hypochlorite production",
pages = "42-34",
volume = "96",
doi = "10.1016/j.electacta.2013.02.086",
url = "https://hdl.handle.net/21.15107/rcub_dais_358"
}

Lačnjevac, U., Jović, B., Gajić Krstajić, L., Kovač, J., Jović, V.,& Krstajić, N.. (2013). Ti substrate coated with composite Cr–MoO2 coatings as highly selective cathode materials in hypochlorite production. in Electrochimica Acta
Elsevier., 96, 34-42.
https://doi.org/10.1016/j.electacta.2013.02.086
https://hdl.handle.net/21.15107/rcub_dais_358

Lačnjevac U, Jović B, Gajić Krstajić L, Kovač J, Jović V, Krstajić N. Ti substrate coated with composite Cr–MoO2 coatings as highly selective cathode materials in hypochlorite production. in Electrochimica Acta. 2013;96:34-42.
doi:10.1016/j.electacta.2013.02.086
https://hdl.handle.net/21.15107/rcub_dais_358 .

Lačnjevac, Uroš, Jović, Borka, Gajić Krstajić, Ljiljana, Kovač, Janez, Jović, Vladimir, Krstajić, Nedeljko, "Ti substrate coated with composite Cr–MoO2 coatings as highly selective cathode materials in hypochlorite production" in Electrochimica Acta, 96 (2013):34-42,
https://doi.org/10.1016/j.electacta.2013.02.086 .,
https://hdl.handle.net/21.15107/rcub_dais_358 .

TY  - JOUR
AU  - Jović, Borka
AU  - Lačnjevac, Uroš
AU  - Jović, Vladimir
AU  - Gajić Krstajić, Ljiljana
AU  - Krstajić, Nedeljko
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5719
AB  - MoO3 particles were co-deposited with Ni onto smooth or rough Ni supports from modified Watt’s baths of different compositions. Morphology and composition of the electrodeposits were characterized by means of cyclic voltammetry, X-ray diffraction, scanning electron microscopy, transmission electron microscopy and energy dispersive X-ray spectroscopy. The electrocatalytic activity of the composite catalysts for H2 evolution in alkaline solutions was determined by quasi-stationary polarization curves. Activity increases with MoOx content in the Ni deposit up to a limiting value. Composite Ni-MoOx catalyst performed high catalytic activity, similar to that of commercial Ni-RuO2 catalyst. Stability tests showed that Ni-MoOx codeposits are stable under condition of constant current and exhibit excellent tolerance to repeated short-circuiting.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - On the kinetics of the hydrogen evolution reaction on Ni-MoOx composite catalysts in alkaline solutions
EP  - 224
IS  - 2
SP  - 211
VL  - 77
DO  - 10.2298/JSC110621185J
UR  - https://hdl.handle.net/21.15107/rcub_dais_258
ER  - 

@article{
author = "Jović, Borka and Lačnjevac, Uroš and Jović, Vladimir and Gajić Krstajić, Ljiljana and Krstajić, Nedeljko",
year = "2012",
abstract = "MoO3 particles were co-deposited with Ni onto smooth or rough Ni supports from modified Watt’s baths of different compositions. Morphology and composition of the electrodeposits were characterized by means of cyclic voltammetry, X-ray diffraction, scanning electron microscopy, transmission electron microscopy and energy dispersive X-ray spectroscopy. The electrocatalytic activity of the composite catalysts for H2 evolution in alkaline solutions was determined by quasi-stationary polarization curves. Activity increases with MoOx content in the Ni deposit up to a limiting value. Composite Ni-MoOx catalyst performed high catalytic activity, similar to that of commercial Ni-RuO2 catalyst. Stability tests showed that Ni-MoOx codeposits are stable under condition of constant current and exhibit excellent tolerance to repeated short-circuiting.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "On the kinetics of the hydrogen evolution reaction on Ni-MoOx composite catalysts in alkaline solutions",
pages = "224-211",
number = "2",
volume = "77",
doi = "10.2298/JSC110621185J",
url = "https://hdl.handle.net/21.15107/rcub_dais_258"
}

Jović, B., Lačnjevac, U., Jović, V., Gajić Krstajić, L.,& Krstajić, N.. (2012). On the kinetics of the hydrogen evolution reaction on Ni-MoOx composite catalysts in alkaline solutions. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 77(2), 211-224.
https://doi.org/10.2298/JSC110621185J
https://hdl.handle.net/21.15107/rcub_dais_258

Jović B, Lačnjevac U, Jović V, Gajić Krstajić L, Krstajić N. On the kinetics of the hydrogen evolution reaction on Ni-MoOx composite catalysts in alkaline solutions. in Journal of the Serbian Chemical Society. 2012;77(2):211-224.
doi:10.2298/JSC110621185J
https://hdl.handle.net/21.15107/rcub_dais_258 .

Jović, Borka, Lačnjevac, Uroš, Jović, Vladimir, Gajić Krstajić, Ljiljana, Krstajić, Nedeljko, "On the kinetics of the hydrogen evolution reaction on Ni-MoOx composite catalysts in alkaline solutions" in Journal of the Serbian Chemical Society, 77, no. 2 (2012):211-224,
https://doi.org/10.2298/JSC110621185J .,
https://hdl.handle.net/21.15107/rcub_dais_258 .

TY  - JOUR
AU  - Krstajić, Nedeljko
AU  - Gajić Krstajić, Ljiljana
AU  - Lačnjevac, Uroš
AU  - Jović, Borka
AU  - Mora, S.
AU  - Jović, Vladimir
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5646
AB  - In this work the Ni–MoOx coatings have been prepared and characterized in view of their possible application as electrocatalysts for hydrogen evolution reaction (HER) in alkaline solution. The procedure of deposition of Ni–MoOx coatings from the Watt’s type bath containing MoO3 powder particles onto Ni mesh, under the conditions of simulated industrial deposition conditions for commercial cathodes, has been presented. The morphology of the obtained coatings was investigated by SEM, the composition by EDS and the phase composition by XRD techniques. The polarization characteristics for hydrogen evolution on the obtained Ni–MoOx coatings were investigated in the 32 wt.% NaOH at 90 °C and compared with the one recorded for the commercial De Nora’s coating (DN). It was shown that the best Ni–MoOx coating exhibits almost identical polarization characteristics as the commercial one. By the cross section and XRD analysis of deposited samples it was confirmed that MoO3 powder particles were not occluded by the Ni deposit and that molybdenum species were deposited from the molybdate ions formed by dissolution of MoO3, following the mechanism of induced co-deposition. The reaction mechanism for MoO3 phase deposition has also been proposed.
PB  - Elsevier
T2  - International Journal of Hydrogen Energy
T1  - Non-noble metal composite cathodes for hydrogen evolution. Part I: The Ni–MoOx coatings electrodeposited from Watt’s type bath containing MoO3 powder particles
EP  - 6449
SP  - 6441
DO  - 10.1016/j.ijhydene.2011.02.105
UR  - https://hdl.handle.net/21.15107/rcub_dais_709
ER  - 

@article{
author = "Krstajić, Nedeljko and Gajić Krstajić, Ljiljana and Lačnjevac, Uroš and Jović, Borka and Mora, S. and Jović, Vladimir",
year = "2011",
abstract = "In this work the Ni–MoOx coatings have been prepared and characterized in view of their possible application as electrocatalysts for hydrogen evolution reaction (HER) in alkaline solution. The procedure of deposition of Ni–MoOx coatings from the Watt’s type bath containing MoO3 powder particles onto Ni mesh, under the conditions of simulated industrial deposition conditions for commercial cathodes, has been presented. The morphology of the obtained coatings was investigated by SEM, the composition by EDS and the phase composition by XRD techniques. The polarization characteristics for hydrogen evolution on the obtained Ni–MoOx coatings were investigated in the 32 wt.% NaOH at 90 °C and compared with the one recorded for the commercial De Nora’s coating (DN). It was shown that the best Ni–MoOx coating exhibits almost identical polarization characteristics as the commercial one. By the cross section and XRD analysis of deposited samples it was confirmed that MoO3 powder particles were not occluded by the Ni deposit and that molybdenum species were deposited from the molybdate ions formed by dissolution of MoO3, following the mechanism of induced co-deposition. The reaction mechanism for MoO3 phase deposition has also been proposed.",
publisher = "Elsevier",
journal = "International Journal of Hydrogen Energy",
title = "Non-noble metal composite cathodes for hydrogen evolution. Part I: The Ni–MoOx coatings electrodeposited from Watt’s type bath containing MoO3 powder particles",
pages = "6449-6441",
doi = "10.1016/j.ijhydene.2011.02.105",
url = "https://hdl.handle.net/21.15107/rcub_dais_709"
}

Krstajić, N., Gajić Krstajić, L., Lačnjevac, U., Jović, B., Mora, S.,& Jović, V.. (2011). Non-noble metal composite cathodes for hydrogen evolution. Part I: The Ni–MoOx coatings electrodeposited from Watt’s type bath containing MoO3 powder particles. in International Journal of Hydrogen Energy
Elsevier., 6441-6449.
https://doi.org/10.1016/j.ijhydene.2011.02.105
https://hdl.handle.net/21.15107/rcub_dais_709

Krstajić N, Gajić Krstajić L, Lačnjevac U, Jović B, Mora S, Jović V. Non-noble metal composite cathodes for hydrogen evolution. Part I: The Ni–MoOx coatings electrodeposited from Watt’s type bath containing MoO3 powder particles. in International Journal of Hydrogen Energy. 2011;:6441-6449.
doi:10.1016/j.ijhydene.2011.02.105
https://hdl.handle.net/21.15107/rcub_dais_709 .

Krstajić, Nedeljko, Gajić Krstajić, Ljiljana, Lačnjevac, Uroš, Jović, Borka, Mora, S., Jović, Vladimir, "Non-noble metal composite cathodes for hydrogen evolution. Part I: The Ni–MoOx coatings electrodeposited from Watt’s type bath containing MoO3 powder particles" in International Journal of Hydrogen Energy (2011):6441-6449,
https://doi.org/10.1016/j.ijhydene.2011.02.105 .,
https://hdl.handle.net/21.15107/rcub_dais_709 .

TY  - JOUR
AU  - Krstajić, Nedeljko
AU  - Jović, Vladimir D.
AU  - Gajić Krstajić, Ljiljana
AU  - Jović, Borka M.
AU  - Antozzi, A. L.
AU  - Martelli, G. N.
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5530
AB  - The hydrogen evolution reaction on the electrodeposited Ni-Mo alloy coatings, as well as their electrochemical properties in the NaOH solutions, have been investigated by the polarization measurements, cyclic voltammetry and EIS technique. It was shown that the Ni-Mo alloy coatings electrodeposited from the pyrophosphate-sodium bicarbonate bath possess high catalytic activity for hydrogen evolution in the NaOH solutions. Their stability in the 1 M NaOH at 25 °C under the condition of the reverse polarization was shown to be very good, while in the 33% NaOH at 85 °C (conditions of the industrial electrolysis) the electrodeposited Ni-Mo alloy coatings exhibited also high catalytic activity, but low stability, as a consequence of a deterioration of the alloy coatings. © 2008 International Association for Hydrogen Energy.
PB  - Elsevier
T2  - International Journal of Hydrogen Energy
T1  - Electrodeposition of Ni-Mo alloy coatings and their characterization as cathodes for hydrogen evolution in sodium hydroxide solution
EP  - 3687
IS  - 14
SP  - 3676
VL  - 33
DO  - 10.1016/j.ijhydene.2008.04.039
UR  - https://hdl.handle.net/21.15107/rcub_dais_3579
ER  - 

@article{
author = "Krstajić, Nedeljko and Jović, Vladimir D. and Gajić Krstajić, Ljiljana and Jović, Borka M. and Antozzi, A. L. and Martelli, G. N.",
year = "2008",
abstract = "The hydrogen evolution reaction on the electrodeposited Ni-Mo alloy coatings, as well as their electrochemical properties in the NaOH solutions, have been investigated by the polarization measurements, cyclic voltammetry and EIS technique. It was shown that the Ni-Mo alloy coatings electrodeposited from the pyrophosphate-sodium bicarbonate bath possess high catalytic activity for hydrogen evolution in the NaOH solutions. Their stability in the 1 M NaOH at 25 °C under the condition of the reverse polarization was shown to be very good, while in the 33% NaOH at 85 °C (conditions of the industrial electrolysis) the electrodeposited Ni-Mo alloy coatings exhibited also high catalytic activity, but low stability, as a consequence of a deterioration of the alloy coatings. © 2008 International Association for Hydrogen Energy.",
publisher = "Elsevier",
journal = "International Journal of Hydrogen Energy",
title = "Electrodeposition of Ni-Mo alloy coatings and their characterization as cathodes for hydrogen evolution in sodium hydroxide solution",
pages = "3687-3676",
number = "14",
volume = "33",
doi = "10.1016/j.ijhydene.2008.04.039",
url = "https://hdl.handle.net/21.15107/rcub_dais_3579"
}

Krstajić, N., Jović, V. D., Gajić Krstajić, L., Jović, B. M., Antozzi, A. L.,& Martelli, G. N.. (2008). Electrodeposition of Ni-Mo alloy coatings and their characterization as cathodes for hydrogen evolution in sodium hydroxide solution. in International Journal of Hydrogen Energy
Elsevier., 33(14), 3676-3687.
https://doi.org/10.1016/j.ijhydene.2008.04.039
https://hdl.handle.net/21.15107/rcub_dais_3579

Krstajić N, Jović VD, Gajić Krstajić L, Jović BM, Antozzi AL, Martelli GN. Electrodeposition of Ni-Mo alloy coatings and their characterization as cathodes for hydrogen evolution in sodium hydroxide solution. in International Journal of Hydrogen Energy. 2008;33(14):3676-3687.
doi:10.1016/j.ijhydene.2008.04.039
https://hdl.handle.net/21.15107/rcub_dais_3579 .

Krstajić, Nedeljko, Jović, Vladimir D., Gajić Krstajić, Ljiljana, Jović, Borka M., Antozzi, A. L., Martelli, G. N., "Electrodeposition of Ni-Mo alloy coatings and their characterization as cathodes for hydrogen evolution in sodium hydroxide solution" in International Journal of Hydrogen Energy, 33, no. 14 (2008):3676-3687,
https://doi.org/10.1016/j.ijhydene.2008.04.039 .,
https://hdl.handle.net/21.15107/rcub_dais_3579 .

TY  - JOUR
AU  - Jović, Vladimir D.
AU  - Maksimović, Vesna M.
AU  - Pavlović, Miomir
AU  - Popov, Konstantin I.
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5448
AB  - In this paper the morphology (SEM analysis), the internal structure (cross-section analysis) and the growth mechanism of Ni and Co powders electrodeposited from ammoniacal electrolyte are investigated. It is shown that morphology and the internal structure of those powders are quite different. For Ni powder, all particles are of the same morphology, cauliflower-like type. In the case of Co powder, generally two types of particles are detected: (1) dendrite particles and (2) different types of agglomerates, compact, spongy-like and ball-like ones. The growth mechanism for all agglomerates is based on the fact that with the time of growth the disperse (dendrite) agglomerate is branching in different directions and at the tip of each branch spherical diffusion takes over the planar one, providing conditions for the growth of compact deposit. After some time, these branches form compact deposit all over the agglomerate surface and the same agglomerate further grows as a compact one, until it falls off from the electrode surface. Characteristic of all agglomerates is the presence of deep cavities on their surface and the fern-like dendrites on the bottom for most of these cavities.
PB  - Springer, New York
T2  - Journal of Solid State Electrochemistry
T1  - Morphology, internal structure and growth mechanism of electrodeposited Ni and Co powders
EP  - 379
IS  - 6
SP  - 373
VL  - 10
DO  - 10.1007/s10008-005-0687-1
ER  - 

@article{
author = "Jović, Vladimir D. and Maksimović, Vesna M. and Pavlović, Miomir and Popov, Konstantin I.",
year = "2006",
abstract = "In this paper the morphology (SEM analysis), the internal structure (cross-section analysis) and the growth mechanism of Ni and Co powders electrodeposited from ammoniacal electrolyte are investigated. It is shown that morphology and the internal structure of those powders are quite different. For Ni powder, all particles are of the same morphology, cauliflower-like type. In the case of Co powder, generally two types of particles are detected: (1) dendrite particles and (2) different types of agglomerates, compact, spongy-like and ball-like ones. The growth mechanism for all agglomerates is based on the fact that with the time of growth the disperse (dendrite) agglomerate is branching in different directions and at the tip of each branch spherical diffusion takes over the planar one, providing conditions for the growth of compact deposit. After some time, these branches form compact deposit all over the agglomerate surface and the same agglomerate further grows as a compact one, until it falls off from the electrode surface. Characteristic of all agglomerates is the presence of deep cavities on their surface and the fern-like dendrites on the bottom for most of these cavities.",
publisher = "Springer, New York",
journal = "Journal of Solid State Electrochemistry",
title = "Morphology, internal structure and growth mechanism of electrodeposited Ni and Co powders",
pages = "379-373",
number = "6",
volume = "10",
doi = "10.1007/s10008-005-0687-1"
}

Jović, V. D., Maksimović, V. M., Pavlović, M.,& Popov, K. I.. (2006). Morphology, internal structure and growth mechanism of electrodeposited Ni and Co powders. in Journal of Solid State Electrochemistry
Springer, New York., 10(6), 373-379.
https://doi.org/10.1007/s10008-005-0687-1

Jović VD, Maksimović VM, Pavlović M, Popov KI. Morphology, internal structure and growth mechanism of electrodeposited Ni and Co powders. in Journal of Solid State Electrochemistry. 2006;10(6):373-379.
doi:10.1007/s10008-005-0687-1 .

Jović, Vladimir D., Maksimović, Vesna M., Pavlović, Miomir, Popov, Konstantin I., "Morphology, internal structure and growth mechanism of electrodeposited Ni and Co powders" in Journal of Solid State Electrochemistry, 10, no. 6 (2006):373-379,
https://doi.org/10.1007/s10008-005-0687-1 . .

TY  - JOUR
AU  - Grgur, Branimir
AU  - Krstajić, Nedeljko V.
AU  - Elezović, Nevenka R.
AU  - Jović, Vladimir D.
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/776
AB  - Fe–Mo alloys were electrodeposited from a pyrophosphate bath using a single diode rectified AC current. Their composition and morphology were investigated by SEM, optical microscopy and EDS, in order to determine the influence of the deposition conditions on the morphology and composition of these alloys. It was shown that the electrodeposition parameters, such as chemical bath composition and current density, influenced both the composition of the Fe–Mo alloys and the current efficiency for their deposition, while the micro and macro-morphology did not change significantly with changing conditions of alloy electrodeposition. It was found that the electrodeposited Fe–Mo alloys possessed a 0.15 V to 0.30 V lower overvoltage than mild steel for hydrogen evolution in an electrolyte commonly used in commercial chlorate production, depending on the alloy composition, i.e., the conditions of alloy electrodeposition.
AB  - Fe–Mo legure su elektrohemijski taložene iz pirofosfatnog kupatila korišćenjem periodično promeljivog AC strujnog režima. Sastav i morfologija dobijenih taloga ispitivani su SEM i EDS tehnikama, dok je poprečni presek uzoraka ispitivan optičkom mikroskopijom, sa ciljem da se odredi uticaj uslova taloženja na morfologiju i sastav legura. Pokazano je da uslovi taloženja sastav kupatila i gustina struje taloženja, praktič no ne utiču na morfologiju legura, ali da utiču na sastav legura i na iskorišćenje struje njihovog taloženja. Takođe je pokazano da istaložene Fe–Mo legure posedujumanju prenapetost za reakciju izdvajanja vodonika od mekog čelika (0,15 V do 0,30 V u zavisnosti od uslova taloženja) koji se koristi kao katoda u industrijskim postrojenjima za proizvodnju hlorata, ukazujući da se elektrohemijski istaložene Fe–Mo legure mogu koristiti kao katalitički aktivne katode u ovom procesu.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Electrodeposition and characterization of Fe-Mo alloys as cathodes for hydrogen evolution in the process of chlorate production
T1  - Elektrohemijsko taloženje i karakterizacija Fe-Mo legura kao katoda za reakciju izdvajanja vodonika u industrijskom procesu proizvodnje hlorata
EP  - 889
IS  - 6
SP  - 879
VL  - 70
UR  - https://hdl.handle.net/21.15107/rcub_technorep_776
ER  - 

@article{
author = "Grgur, Branimir and Krstajić, Nedeljko V. and Elezović, Nevenka R. and Jović, Vladimir D.",
year = "2005",
abstract = "Fe–Mo alloys were electrodeposited from a pyrophosphate bath using a single diode rectified AC current. Their composition and morphology were investigated by SEM, optical microscopy and EDS, in order to determine the influence of the deposition conditions on the morphology and composition of these alloys. It was shown that the electrodeposition parameters, such as chemical bath composition and current density, influenced both the composition of the Fe–Mo alloys and the current efficiency for their deposition, while the micro and macro-morphology did not change significantly with changing conditions of alloy electrodeposition. It was found that the electrodeposited Fe–Mo alloys possessed a 0.15 V to 0.30 V lower overvoltage than mild steel for hydrogen evolution in an electrolyte commonly used in commercial chlorate production, depending on the alloy composition, i.e., the conditions of alloy electrodeposition., Fe–Mo legure su elektrohemijski taložene iz pirofosfatnog kupatila korišćenjem periodično promeljivog AC strujnog režima. Sastav i morfologija dobijenih taloga ispitivani su SEM i EDS tehnikama, dok je poprečni presek uzoraka ispitivan optičkom mikroskopijom, sa ciljem da se odredi uticaj uslova taloženja na morfologiju i sastav legura. Pokazano je da uslovi taloženja sastav kupatila i gustina struje taloženja, praktič no ne utiču na morfologiju legura, ali da utiču na sastav legura i na iskorišćenje struje njihovog taloženja. Takođe je pokazano da istaložene Fe–Mo legure posedujumanju prenapetost za reakciju izdvajanja vodonika od mekog čelika (0,15 V do 0,30 V u zavisnosti od uslova taloženja) koji se koristi kao katoda u industrijskim postrojenjima za proizvodnju hlorata, ukazujući da se elektrohemijski istaložene Fe–Mo legure mogu koristiti kao katalitički aktivne katode u ovom procesu.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Electrodeposition and characterization of Fe-Mo alloys as cathodes for hydrogen evolution in the process of chlorate production, Elektrohemijsko taloženje i karakterizacija Fe-Mo legura kao katoda za reakciju izdvajanja vodonika u industrijskom procesu proizvodnje hlorata",
pages = "889-879",
number = "6",
volume = "70",
url = "https://hdl.handle.net/21.15107/rcub_technorep_776"
}

Grgur, B., Krstajić, N. V., Elezović, N. R.,& Jović, V. D.. (2005). Electrodeposition and characterization of Fe-Mo alloys as cathodes for hydrogen evolution in the process of chlorate production. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 70(6), 879-889.
https://hdl.handle.net/21.15107/rcub_technorep_776

Grgur B, Krstajić NV, Elezović NR, Jović VD. Electrodeposition and characterization of Fe-Mo alloys as cathodes for hydrogen evolution in the process of chlorate production. in Journal of the Serbian Chemical Society. 2005;70(6):879-889.
https://hdl.handle.net/21.15107/rcub_technorep_776 .

Grgur, Branimir, Krstajić, Nedeljko V., Elezović, Nevenka R., Jović, Vladimir D., "Electrodeposition and characterization of Fe-Mo alloys as cathodes for hydrogen evolution in the process of chlorate production" in Journal of the Serbian Chemical Society, 70, no. 6 (2005):879-889,
https://hdl.handle.net/21.15107/rcub_technorep_776 .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Jović, Vladimir D
AU  - Krstajić, Nedeljko V.
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5461
AB  - The mechanism and kinetics of the hydrogen evolution reaction were studied. in 1.0 mol dm(-3) NaOH solution on Fe-Mo alloy electrodes prepared by electrodeposition at constant current densities from a pyrophosphate bath. A series of electrode containing 34-59 at.% Mo was prepared. Electrodes displayed porous character, and electrochemical impedance spectroscopy was used to characterized real surface area. It was found that within the whole potential region the mechanism of the HER is a consecutive combination of the Volmer step, followed dominantly by a rate controlling Heyrovsky step, while the contribution of the parallel Tafel step is negligible. The kinetic parameters of the HER were determined. With an increase in the molybdenum content, the electrodes become more active, and an increase in the real surface area is observed. The main factor influencing the electrode activity seems to be the real surface area.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Kinetics of the hydrogen evolution reaction on Fe-Mo film deposited on mild steel support in alkaline solution
EP  - 5601
IS  - 28
SP  - 5594
VL  - 50
DO  - 10.1016/j.electacta.2005.03.037
ER  - 

@article{
author = "Elezović, Nevenka R. and Jović, Vladimir D and Krstajić, Nedeljko V.",
year = "2005",
abstract = "The mechanism and kinetics of the hydrogen evolution reaction were studied. in 1.0 mol dm(-3) NaOH solution on Fe-Mo alloy electrodes prepared by electrodeposition at constant current densities from a pyrophosphate bath. A series of electrode containing 34-59 at.% Mo was prepared. Electrodes displayed porous character, and electrochemical impedance spectroscopy was used to characterized real surface area. It was found that within the whole potential region the mechanism of the HER is a consecutive combination of the Volmer step, followed dominantly by a rate controlling Heyrovsky step, while the contribution of the parallel Tafel step is negligible. The kinetic parameters of the HER were determined. With an increase in the molybdenum content, the electrodes become more active, and an increase in the real surface area is observed. The main factor influencing the electrode activity seems to be the real surface area.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Kinetics of the hydrogen evolution reaction on Fe-Mo film deposited on mild steel support in alkaline solution",
pages = "5601-5594",
number = "28",
volume = "50",
doi = "10.1016/j.electacta.2005.03.037"
}

Elezović, N. R., Jović, V. D.,& Krstajić, N. V.. (2005). Kinetics of the hydrogen evolution reaction on Fe-Mo film deposited on mild steel support in alkaline solution. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 50(28), 5594-5601.
https://doi.org/10.1016/j.electacta.2005.03.037

Elezović NR, Jović VD, Krstajić NV. Kinetics of the hydrogen evolution reaction on Fe-Mo film deposited on mild steel support in alkaline solution. in Electrochimica Acta. 2005;50(28):5594-5601.
doi:10.1016/j.electacta.2005.03.037 .

Elezović, Nevenka R., Jović, Vladimir D, Krstajić, Nedeljko V., "Kinetics of the hydrogen evolution reaction on Fe-Mo film deposited on mild steel support in alkaline solution" in Electrochimica Acta, 50, no. 28 (2005):5594-5601,
https://doi.org/10.1016/j.electacta.2005.03.037 . .

TY  - JOUR
AU  - Branković, Goran
AU  - Branković, Zorica
AU  - Jović, Vladimir D
AU  - Varela, JA
PY  - 2001
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5342
AB  - A novel fractal model for grain boundary regions of ceramic materials was developed. The model considers laterally inhomogeneous distribution of charge carriers in the vicinity of grain boundaries as the main cause of the non-Debye behaviour and distribution of relaxation times in ceramic materials. Considering the equivalent circuit the impedance of the grain boundary region was expressed. It was shown that the impedance of the grain boundary region has the form of the Davidson-Cole equation. The fractal dimension of the inhomogeneous distribution of charge carriers in the region close to the grain boundaries could be calculated based on the relation d(s) = 1 + beta, where beta is the constant from the Davidson-Cole equation.
PB  - Kluwer Academic Publ, Dordrecht
T2  - Journal of Electroceramics
T1  - Fractal approach to ac impedance spectroscopy studies of ceramic materials
EP  - 94
IS  - 2
SP  - 89
VL  - 7
DO  - 10.1023/A:1013166204618
ER  - 

@article{
author = "Branković, Goran and Branković, Zorica and Jović, Vladimir D and Varela, JA",
year = "2001",
abstract = "A novel fractal model for grain boundary regions of ceramic materials was developed. The model considers laterally inhomogeneous distribution of charge carriers in the vicinity of grain boundaries as the main cause of the non-Debye behaviour and distribution of relaxation times in ceramic materials. Considering the equivalent circuit the impedance of the grain boundary region was expressed. It was shown that the impedance of the grain boundary region has the form of the Davidson-Cole equation. The fractal dimension of the inhomogeneous distribution of charge carriers in the region close to the grain boundaries could be calculated based on the relation d(s) = 1 + beta, where beta is the constant from the Davidson-Cole equation.",
publisher = "Kluwer Academic Publ, Dordrecht",
journal = "Journal of Electroceramics",
title = "Fractal approach to ac impedance spectroscopy studies of ceramic materials",
pages = "94-89",
number = "2",
volume = "7",
doi = "10.1023/A:1013166204618"
}

Branković, G., Branković, Z., Jović, V. D.,& Varela, J.. (2001). Fractal approach to ac impedance spectroscopy studies of ceramic materials. in Journal of Electroceramics
Kluwer Academic Publ, Dordrecht., 7(2), 89-94.
https://doi.org/10.1023/A:1013166204618

Branković G, Branković Z, Jović VD, Varela J. Fractal approach to ac impedance spectroscopy studies of ceramic materials. in Journal of Electroceramics. 2001;7(2):89-94.
doi:10.1023/A:1013166204618 .

Branković, Goran, Branković, Zorica, Jović, Vladimir D, Varela, JA, "Fractal approach to ac impedance spectroscopy studies of ceramic materials" in Journal of Electroceramics, 7, no. 2 (2001):89-94,
https://doi.org/10.1023/A:1013166204618 . .