TY  - JOUR
AU  - Žunić, Milan
AU  - Branković, Goran
AU  - Basoli, Francesco
AU  - Cilense, Mario
AU  - Longo, Elson
AU  - Varela, JA
PY  - 2014
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/813
AB  - There are many of properties of anodes based on proton conductors, like microstructure, conductivity and chemical stability, which should be optimized. In this work we were dealing with the influence of niobium on the chemical stability, microstructural and electrical characteristics of proton conducting NiO-BaCe0.85-xNbxY0.15O3-delta (NiO-BCNYx) anodes. Four anode substrates NiO-BCNYx of different Nb concentration were prepared using the method of evaporation and decomposition of solutions and suspensions (EDSS). Sintered anode substrates were reduced and their microstructural and electrical properties were examined before and after reduction as a function of the amount of niobium. Chemical stability tests showed strong influence of Nb amount on the chemical stability of anodes in the CO2. Microstructural properties of the anode pellets before and after testing in CO2 were investigated using X-ray diffraction analysis. Electrical properties of anode samples were examined by impedance spectroscopy measurements and the conductivity values of reduced anodes were more than 50 S cm (1) at 600 degrees C confirming percolation through Ni particles. Fuel cells were fabricated with aim to examine the functionality of anodes. During the fuel cell test the cell with Ni-BCNY10 anode achieved the highest performance, demonstrating a peak power density of 164 mW cm (2) at 650 degrees C, which confirmed the functionality of Ni-BCNY anodes.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Stability, characterization and functionality of proton conducting NiO-BaCe0.85-xNbxY0.15O3-delta cermet anodes for IT-SOFC application
EP  - 13
SP  - 7
VL  - 609
DO  - 10.1016/j.jallcom.2014.04.175
ER  - 

@article{
author = "Žunić, Milan and Branković, Goran and Basoli, Francesco and Cilense, Mario and Longo, Elson and Varela, JA",
year = "2014",
abstract = "There are many of properties of anodes based on proton conductors, like microstructure, conductivity and chemical stability, which should be optimized. In this work we were dealing with the influence of niobium on the chemical stability, microstructural and electrical characteristics of proton conducting NiO-BaCe0.85-xNbxY0.15O3-delta (NiO-BCNYx) anodes. Four anode substrates NiO-BCNYx of different Nb concentration were prepared using the method of evaporation and decomposition of solutions and suspensions (EDSS). Sintered anode substrates were reduced and their microstructural and electrical properties were examined before and after reduction as a function of the amount of niobium. Chemical stability tests showed strong influence of Nb amount on the chemical stability of anodes in the CO2. Microstructural properties of the anode pellets before and after testing in CO2 were investigated using X-ray diffraction analysis. Electrical properties of anode samples were examined by impedance spectroscopy measurements and the conductivity values of reduced anodes were more than 50 S cm (1) at 600 degrees C confirming percolation through Ni particles. Fuel cells were fabricated with aim to examine the functionality of anodes. During the fuel cell test the cell with Ni-BCNY10 anode achieved the highest performance, demonstrating a peak power density of 164 mW cm (2) at 650 degrees C, which confirmed the functionality of Ni-BCNY anodes.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Stability, characterization and functionality of proton conducting NiO-BaCe0.85-xNbxY0.15O3-delta cermet anodes for IT-SOFC application",
pages = "13-7",
volume = "609",
doi = "10.1016/j.jallcom.2014.04.175"
}

Žunić, M., Branković, G., Basoli, F., Cilense, M., Longo, E.,& Varela, J.. (2014). Stability, characterization and functionality of proton conducting NiO-BaCe0.85-xNbxY0.15O3-delta cermet anodes for IT-SOFC application. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 609, 7-13.
https://doi.org/10.1016/j.jallcom.2014.04.175

Žunić M, Branković G, Basoli F, Cilense M, Longo E, Varela J. Stability, characterization and functionality of proton conducting NiO-BaCe0.85-xNbxY0.15O3-delta cermet anodes for IT-SOFC application. in Journal of Alloys and Compounds. 2014;609:7-13.
doi:10.1016/j.jallcom.2014.04.175 .

Žunić, Milan, Branković, Goran, Basoli, Francesco, Cilense, Mario, Longo, Elson, Varela, JA, "Stability, characterization and functionality of proton conducting NiO-BaCe0.85-xNbxY0.15O3-delta cermet anodes for IT-SOFC application" in Journal of Alloys and Compounds, 609 (2014):7-13,
https://doi.org/10.1016/j.jallcom.2014.04.175 . .

TY  - JOUR
AU  - Žunić, Milan
AU  - Branković, Goran
AU  - Foschini, Cesar Renato
AU  - Cilense, Mario
AU  - Longo, Elson
AU  - Varela, JA
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/712
AB  - Optimization of the major properties of anodes based on proton conductors, such as microstructure, conductivity and chemical stability, is yet to be achieved. In this study we investigated the influence of indium on the chemical stability, microstructural and electrical characteristics of proton conducting NiO-BaCe0.9 xInxY0.1O3 delta (NiO-BCIYx) anodes. Four compositions of cermet anode substrates NiO-BCIYx were prepared using the method of evaporation and decomposition of solutions and suspensions (EDSS). Sintered anode substrates were reduced and their microstructural and electrical properties were examined before and after reduction as a function of the amount of indium. Anode substrates tested on chemical stability in the CO2 atmosphere showed high stability compared to anode substrates based on commonly used doped barium cerates. Microstructural properties of the anode pellets before and after testing in CO2 were investigated using X-ray diffraction analysis. Impedance spectroscopy measurements were used for evaluation of electrical properties of the anode pellets and the conductivity values of reduced anodes of more than 14 S cm (1) at 600 degrees C confirmed percolations through Ni particles. Under fuel cell operating conditions, the cell with a Ni-BCIY20 anode achieved the highest performance, demonstrating a peak power density 223 mW/cm(2) at 700 degrees C confirming the functionality of Ni-BCIY anodes.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Influence of the indium concentration on microstructural and electrical properties of proton conducting NiO-BaCe0.9-xInxY0.1O3-delta cermet anodes for IT-SOFC application
EP  - 260
SP  - 254
VL  - 563
DO  - 10.1016/j.jallcom.2013.02.122
ER  - 

@article{
author = "Žunić, Milan and Branković, Goran and Foschini, Cesar Renato and Cilense, Mario and Longo, Elson and Varela, JA",
year = "2013",
abstract = "Optimization of the major properties of anodes based on proton conductors, such as microstructure, conductivity and chemical stability, is yet to be achieved. In this study we investigated the influence of indium on the chemical stability, microstructural and electrical characteristics of proton conducting NiO-BaCe0.9 xInxY0.1O3 delta (NiO-BCIYx) anodes. Four compositions of cermet anode substrates NiO-BCIYx were prepared using the method of evaporation and decomposition of solutions and suspensions (EDSS). Sintered anode substrates were reduced and their microstructural and electrical properties were examined before and after reduction as a function of the amount of indium. Anode substrates tested on chemical stability in the CO2 atmosphere showed high stability compared to anode substrates based on commonly used doped barium cerates. Microstructural properties of the anode pellets before and after testing in CO2 were investigated using X-ray diffraction analysis. Impedance spectroscopy measurements were used for evaluation of electrical properties of the anode pellets and the conductivity values of reduced anodes of more than 14 S cm (1) at 600 degrees C confirmed percolations through Ni particles. Under fuel cell operating conditions, the cell with a Ni-BCIY20 anode achieved the highest performance, demonstrating a peak power density 223 mW/cm(2) at 700 degrees C confirming the functionality of Ni-BCIY anodes.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Influence of the indium concentration on microstructural and electrical properties of proton conducting NiO-BaCe0.9-xInxY0.1O3-delta cermet anodes for IT-SOFC application",
pages = "260-254",
volume = "563",
doi = "10.1016/j.jallcom.2013.02.122"
}

Žunić, M., Branković, G., Foschini, C. R., Cilense, M., Longo, E.,& Varela, J.. (2013). Influence of the indium concentration on microstructural and electrical properties of proton conducting NiO-BaCe0.9-xInxY0.1O3-delta cermet anodes for IT-SOFC application. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 563, 254-260.
https://doi.org/10.1016/j.jallcom.2013.02.122

Žunić M, Branković G, Foschini CR, Cilense M, Longo E, Varela J. Influence of the indium concentration on microstructural and electrical properties of proton conducting NiO-BaCe0.9-xInxY0.1O3-delta cermet anodes for IT-SOFC application. in Journal of Alloys and Compounds. 2013;563:254-260.
doi:10.1016/j.jallcom.2013.02.122 .

Žunić, Milan, Branković, Goran, Foschini, Cesar Renato, Cilense, Mario, Longo, Elson, Varela, JA, "Influence of the indium concentration on microstructural and electrical properties of proton conducting NiO-BaCe0.9-xInxY0.1O3-delta cermet anodes for IT-SOFC application" in Journal of Alloys and Compounds, 563 (2013):254-260,
https://doi.org/10.1016/j.jallcom.2013.02.122 . .

TY  - JOUR
AU  - Radojković, Aleksandar
AU  - Žunić, Milan
AU  - Savić, Slavica M.
AU  - Branković, Goran
AU  - Branković, Zorica
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/634
AB  - BaCe0.9-xNbxY0.1O3-delta (where x=0, 0.01, 0.03 and 0.05) powders were synthesized by solid-state reaction to investigate the influence of Nb concentration on chemical stability and electrical properties of the sintered samples. The dense electrolyte pellets were formed from the powders after being uniaxially pressed and sintered at 1550 degrees C. The electrical conductivities determined by impedance measurements in temperature range of 550-750 degrees C in different atmospheres (dry argon and wet hydrogen) showed a decreasing trend with an increase of Nb content. For all samples higher conductivities were observed in the wet hydrogen than in dry argon atmosphere. The chemical stability was enhanced with increasing of Nb concentration. It was found that BaCe0.87Nb0.03Y0.1O3-delta is the optimal composition that satisfies the opposite demands for electrical conductivity and chemical stability, reaching 0.8 x 10(-2) S cm(-1) in wet hydrogen at 650 degrees C compared to 1.01 x 10(-2) S cm(-1) for undoped electrolyte.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Chemical stability and electrical properties of Nb doped BaCe0.9Y0.1O3-delta as a high temperature proton conducting electrolyte for IT-SOFC
EP  - 313
IS  - 1
SP  - 307
VL  - 39
DO  - 10.1016/j.ceramint.2012.06.026
ER  - 

@article{
author = "Radojković, Aleksandar and Žunić, Milan and Savić, Slavica M. and Branković, Goran and Branković, Zorica",
year = "2013",
abstract = "BaCe0.9-xNbxY0.1O3-delta (where x=0, 0.01, 0.03 and 0.05) powders were synthesized by solid-state reaction to investigate the influence of Nb concentration on chemical stability and electrical properties of the sintered samples. The dense electrolyte pellets were formed from the powders after being uniaxially pressed and sintered at 1550 degrees C. The electrical conductivities determined by impedance measurements in temperature range of 550-750 degrees C in different atmospheres (dry argon and wet hydrogen) showed a decreasing trend with an increase of Nb content. For all samples higher conductivities were observed in the wet hydrogen than in dry argon atmosphere. The chemical stability was enhanced with increasing of Nb concentration. It was found that BaCe0.87Nb0.03Y0.1O3-delta is the optimal composition that satisfies the opposite demands for electrical conductivity and chemical stability, reaching 0.8 x 10(-2) S cm(-1) in wet hydrogen at 650 degrees C compared to 1.01 x 10(-2) S cm(-1) for undoped electrolyte.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Chemical stability and electrical properties of Nb doped BaCe0.9Y0.1O3-delta as a high temperature proton conducting electrolyte for IT-SOFC",
pages = "313-307",
number = "1",
volume = "39",
doi = "10.1016/j.ceramint.2012.06.026"
}

Radojković, A., Žunić, M., Savić, S. M., Branković, G.,& Branković, Z.. (2013). Chemical stability and electrical properties of Nb doped BaCe0.9Y0.1O3-delta as a high temperature proton conducting electrolyte for IT-SOFC. in Ceramics International
Elsevier Sci Ltd, Oxford., 39(1), 307-313.
https://doi.org/10.1016/j.ceramint.2012.06.026

Radojković A, Žunić M, Savić SM, Branković G, Branković Z. Chemical stability and electrical properties of Nb doped BaCe0.9Y0.1O3-delta as a high temperature proton conducting electrolyte for IT-SOFC. in Ceramics International. 2013;39(1):307-313.
doi:10.1016/j.ceramint.2012.06.026 .

Radojković, Aleksandar, Žunić, Milan, Savić, Slavica M., Branković, Goran, Branković, Zorica, "Chemical stability and electrical properties of Nb doped BaCe0.9Y0.1O3-delta as a high temperature proton conducting electrolyte for IT-SOFC" in Ceramics International, 39, no. 1 (2013):307-313,
https://doi.org/10.1016/j.ceramint.2012.06.026 . .