Electrical characterization of multidoped ceria ceramics
Нема приказа
Аутори
Stojmenović, MarijaBošković, Snežana B.
Bučevac, Dušan
Prekajski, Marija D.
Babić, Biljana M.
Matović, Branko
Mentus, Slavko V.
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
Ceria ceramics was obtained from multi-doped nanosized ceria powders prepared by both modified glycine nitrate procedure (MGNP) and self-propagating reaction at room temperature (SPRT). Rare earth elements such as Nd, Sm, Gdr, Dy, Y, Yb were used as dopants. The overall mole fraction of dopants was 0.2. One-hour long sintering of powder compacts was performed at 1500 degrees C in oxygen atmosphere. Phase composition, microstructure and ionic conductivity of sintered samples were analysed. Single-phase ceria was detected in all samples. In general, the increase in the number of dopants improved the ionic conductivity. The samples doped simultaneously with five dopants had the highest ionic conductivity, as evidenced by the impedance measurements. At 450 degrees C, the conductivity of sample obtained by MGNP was 3.94 x 10(-3) Omega(-1) cm(-1) whereas the conductivity of sample obtained by SPRT was 2.61 x 10(-3) Omega(-1) cm(-1). The conductivity activation energy for MGNP and SPRT sample...s was measured to be 0.348 and 0.385 eV, respectively. Finally, the conductivity decreased as the number of dopants increased to six. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Кључне речи:
Sintering / Ionic conductivity / CeO2 / Fuel cellsИзвор:
Ceramics International, 2013, 39, 2, 1249-1255Финансирање / пројекти:
- Синтеза, процесирање и карактеризација наноструктурних материјала за примену у области енергије, механичког инжењерства, заштите животне стредине и биомедицине (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
DOI: 10.1016/j.ceramint.2012.07.055
ISSN: 0272-8842
WoS: 000313379400045
Scopus: 2-s2.0-84870289142
Колекције
Институција/група
VinčaTY - JOUR AU - Stojmenović, Marija AU - Bošković, Snežana B. AU - Bučevac, Dušan AU - Prekajski, Marija D. AU - Babić, Biljana M. AU - Matović, Branko AU - Mentus, Slavko V. PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5258 AB - Ceria ceramics was obtained from multi-doped nanosized ceria powders prepared by both modified glycine nitrate procedure (MGNP) and self-propagating reaction at room temperature (SPRT). Rare earth elements such as Nd, Sm, Gdr, Dy, Y, Yb were used as dopants. The overall mole fraction of dopants was 0.2. One-hour long sintering of powder compacts was performed at 1500 degrees C in oxygen atmosphere. Phase composition, microstructure and ionic conductivity of sintered samples were analysed. Single-phase ceria was detected in all samples. In general, the increase in the number of dopants improved the ionic conductivity. The samples doped simultaneously with five dopants had the highest ionic conductivity, as evidenced by the impedance measurements. At 450 degrees C, the conductivity of sample obtained by MGNP was 3.94 x 10(-3) Omega(-1) cm(-1) whereas the conductivity of sample obtained by SPRT was 2.61 x 10(-3) Omega(-1) cm(-1). The conductivity activation energy for MGNP and SPRT samples was measured to be 0.348 and 0.385 eV, respectively. Finally, the conductivity decreased as the number of dopants increased to six. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved. T2 - Ceramics International T1 - Electrical characterization of multidoped ceria ceramics VL - 39 IS - 2 SP - 1249 EP - 1255 DO - 10.1016/j.ceramint.2012.07.055 ER -
@article{ author = "Stojmenović, Marija and Bošković, Snežana B. and Bučevac, Dušan and Prekajski, Marija D. and Babić, Biljana M. and Matović, Branko and Mentus, Slavko V.", year = "2013", abstract = "Ceria ceramics was obtained from multi-doped nanosized ceria powders prepared by both modified glycine nitrate procedure (MGNP) and self-propagating reaction at room temperature (SPRT). Rare earth elements such as Nd, Sm, Gdr, Dy, Y, Yb were used as dopants. The overall mole fraction of dopants was 0.2. One-hour long sintering of powder compacts was performed at 1500 degrees C in oxygen atmosphere. Phase composition, microstructure and ionic conductivity of sintered samples were analysed. Single-phase ceria was detected in all samples. In general, the increase in the number of dopants improved the ionic conductivity. The samples doped simultaneously with five dopants had the highest ionic conductivity, as evidenced by the impedance measurements. At 450 degrees C, the conductivity of sample obtained by MGNP was 3.94 x 10(-3) Omega(-1) cm(-1) whereas the conductivity of sample obtained by SPRT was 2.61 x 10(-3) Omega(-1) cm(-1). The conductivity activation energy for MGNP and SPRT samples was measured to be 0.348 and 0.385 eV, respectively. Finally, the conductivity decreased as the number of dopants increased to six. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.", journal = "Ceramics International", title = "Electrical characterization of multidoped ceria ceramics", volume = "39", number = "2", pages = "1249-1255", doi = "10.1016/j.ceramint.2012.07.055" }
Stojmenović, M., Bošković, S. B., Bučevac, D., Prekajski, M. D., Babić, B. M., Matović, B.,& Mentus, S. V.. (2013). Electrical characterization of multidoped ceria ceramics. in Ceramics International, 39(2), 1249-1255. https://doi.org/10.1016/j.ceramint.2012.07.055
Stojmenović M, Bošković SB, Bučevac D, Prekajski MD, Babić BM, Matović B, Mentus SV. Electrical characterization of multidoped ceria ceramics. in Ceramics International. 2013;39(2):1249-1255. doi:10.1016/j.ceramint.2012.07.055 .
Stojmenović, Marija, Bošković, Snežana B., Bučevac, Dušan, Prekajski, Marija D., Babić, Biljana M., Matović, Branko, Mentus, Slavko V., "Electrical characterization of multidoped ceria ceramics" in Ceramics International, 39, no. 2 (2013):1249-1255, https://doi.org/10.1016/j.ceramint.2012.07.055 . .