Eu doped barium cerium oxide as a promising electrolyte for intermediate temperature SOFCs
Аутори
Radojković, AleksandarSavić, Slavica
Jović, Nataša
Ćirković, Jovana
Branković, Zorica
Branković, Goran
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
BaCe0.9Eu0.1O2.95 (BCE) powder was synthesized by citric-nitric autocombustion
method. According to Rietveld analysis, BCE also possesses slightly larger unit cell
volume than mostly investigated BaCe0.9Y0.1O2.95 (BCY), which allows higher
proton mobility through the perovskite lattice. Sinterability of BaCeO3 is enhanced
by doping with Eu since dense electrolyte microstructure with 1–2 μm grains can be
obtained at temperatures below 1500 ºC. Conductivity measurements revealed
separate bulk and grain boundary contributions to the total electrolyte conductivity
below 200 ºC. The grain boundary conductivity was one order of magnitude higher
than the bulk conductivity, indicating the blocking effect of the grain boundaries to
the mobility of charge carriers. As this effect ceased with temperature, it was
possible to determine only total conductivities above 500 ºC. Conductivity of BCE
in a wet hydrogen atmosphere at 600 ºC reached 1.2 × 10–2
S/cm, which can be considered as on...e of the highest conductivities among BaCeO3 based proton
conductors. Thus, doping of BaCeO3 with europium offers multiple improvements
that can eventually lead to decrease in operating temperature of SOFCs based on this
type of proton conducting electrolyte
Кључне речи:
Eu dping, SOFC, proton conductivityИзвор:
3rd Conference of the Serbian Society for Ceramic Materials, 2015, 53-Издавач:
- Društvo za keramičke materijale Srbije
Финансирање / пројекти:
- 0-3D наноструктуре за примену у електроници и обновљивим изворима енергије: синтеза, карактеризација и процесирање (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45007)
Институција/група
Institut za multidisciplinarna istraživanjaTY - CONF AU - Radojković, Aleksandar AU - Savić, Slavica AU - Jović, Nataša AU - Ćirković, Jovana AU - Branković, Zorica AU - Branković, Goran PY - 2015 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2338 AB - BaCe0.9Eu0.1O2.95 (BCE) powder was synthesized by citric-nitric autocombustion method. According to Rietveld analysis, BCE also possesses slightly larger unit cell volume than mostly investigated BaCe0.9Y0.1O2.95 (BCY), which allows higher proton mobility through the perovskite lattice. Sinterability of BaCeO3 is enhanced by doping with Eu since dense electrolyte microstructure with 1–2 μm grains can be obtained at temperatures below 1500 ºC. Conductivity measurements revealed separate bulk and grain boundary contributions to the total electrolyte conductivity below 200 ºC. The grain boundary conductivity was one order of magnitude higher than the bulk conductivity, indicating the blocking effect of the grain boundaries to the mobility of charge carriers. As this effect ceased with temperature, it was possible to determine only total conductivities above 500 ºC. Conductivity of BCE in a wet hydrogen atmosphere at 600 ºC reached 1.2 × 10–2 S/cm, which can be considered as one of the highest conductivities among BaCeO3 based proton conductors. Thus, doping of BaCeO3 with europium offers multiple improvements that can eventually lead to decrease in operating temperature of SOFCs based on this type of proton conducting electrolyte PB - Društvo za keramičke materijale Srbije C3 - 3rd Conference of the Serbian Society for Ceramic Materials T1 - Eu doped barium cerium oxide as a promising electrolyte for intermediate temperature SOFCs SP - 53 UR - https://hdl.handle.net/21.15107/rcub_rimsi_2338 ER -
@conference{ author = "Radojković, Aleksandar and Savić, Slavica and Jović, Nataša and Ćirković, Jovana and Branković, Zorica and Branković, Goran", year = "2015", abstract = "BaCe0.9Eu0.1O2.95 (BCE) powder was synthesized by citric-nitric autocombustion method. According to Rietveld analysis, BCE also possesses slightly larger unit cell volume than mostly investigated BaCe0.9Y0.1O2.95 (BCY), which allows higher proton mobility through the perovskite lattice. Sinterability of BaCeO3 is enhanced by doping with Eu since dense electrolyte microstructure with 1–2 μm grains can be obtained at temperatures below 1500 ºC. Conductivity measurements revealed separate bulk and grain boundary contributions to the total electrolyte conductivity below 200 ºC. The grain boundary conductivity was one order of magnitude higher than the bulk conductivity, indicating the blocking effect of the grain boundaries to the mobility of charge carriers. As this effect ceased with temperature, it was possible to determine only total conductivities above 500 ºC. Conductivity of BCE in a wet hydrogen atmosphere at 600 ºC reached 1.2 × 10–2 S/cm, which can be considered as one of the highest conductivities among BaCeO3 based proton conductors. Thus, doping of BaCeO3 with europium offers multiple improvements that can eventually lead to decrease in operating temperature of SOFCs based on this type of proton conducting electrolyte", publisher = "Društvo za keramičke materijale Srbije", journal = "3rd Conference of the Serbian Society for Ceramic Materials", title = "Eu doped barium cerium oxide as a promising electrolyte for intermediate temperature SOFCs", pages = "53", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2338" }
Radojković, A., Savić, S., Jović, N., Ćirković, J., Branković, Z.,& Branković, G.. (2015). Eu doped barium cerium oxide as a promising electrolyte for intermediate temperature SOFCs. in 3rd Conference of the Serbian Society for Ceramic Materials Društvo za keramičke materijale Srbije., 53. https://hdl.handle.net/21.15107/rcub_rimsi_2338
Radojković A, Savić S, Jović N, Ćirković J, Branković Z, Branković G. Eu doped barium cerium oxide as a promising electrolyte for intermediate temperature SOFCs. in 3rd Conference of the Serbian Society for Ceramic Materials. 2015;:53. https://hdl.handle.net/21.15107/rcub_rimsi_2338 .
Radojković, Aleksandar, Savić, Slavica, Jović, Nataša, Ćirković, Jovana, Branković, Zorica, Branković, Goran, "Eu doped barium cerium oxide as a promising electrolyte for intermediate temperature SOFCs" in 3rd Conference of the Serbian Society for Ceramic Materials (2015):53, https://hdl.handle.net/21.15107/rcub_rimsi_2338 .