Yttrium doping of Ba0.5Sr0.5Co0.8Fe0.2O3-δ part II: Influence on oxygen transport and phase stability

Lana Simone Unger* (Corresponding Author), Rian Ruhl, Matthias Meffert, Christian Niedrig, Wolfgang Menesklou, Stefan F. Wagner, Dagmar Gerthsen, Henny J.M. Bouwmeester, Ellen Ivers-Tiffée

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Abstract

Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) in its cubic perovskite phase has attracted much interest for potential use as oxygen transport membrane (OTM) due to its very high oxygen permeability at high temperatures. However, performance degradation due to a sluggish phase decomposition occurs when BSCF is operated below 840 °C. Partial B-site substitution of the transition metal cations in BSCF by larger and redox-stable cations has emerged as a potential strategy to improve the structural stability of cubic BSCF. In this study, the influence of yttrium doping (0…10 mol-%) on oxygen transport properties and stability of the cubic BSCF phase is assessed by in situ electrical conductivity relaxation (ECR) and electrical conductivity measurements during long-term thermal annealing both at 700 °C and 800 °C. Detailed phase analysis is performed by scanning electron microscopy (SEM) after long-term annealing of the samples in air at different temperatures.

Original languageEnglish
Pages (from-to)2388-2395
Number of pages8
JournalJournal of the European Ceramic Society
Volume38
Issue number5
DOIs
Publication statusPublished - 1 May 2018

Fingerprint

Yttrium
Phase stability
Doping (additives)
Oxygen
Cations
Positive ions
Annealing
Perovskite
Transport properties
Transition metals
Substitution reactions
Decomposition
Membranes
Degradation
Temperature
Scanning electron microscopy
Air
Electric Conductivity

Keywords

  • BSCF
  • Electrical conductivity relaxation
  • Oxygen transport membrane
  • Structural stability
  • Yttrium doping

Cite this

Unger, L. S., Ruhl, R., Meffert, M., Niedrig, C., Menesklou, W., Wagner, S. F., ... Ivers-Tiffée, E. (2018). Yttrium doping of Ba0.5Sr0.5Co0.8Fe0.2O3-δ part II: Influence on oxygen transport and phase stability. Journal of the European Ceramic Society, 38(5), 2388-2395. https://doi.org/10.1016/j.jeurceramsoc.2017.12.042
Unger, Lana Simone ; Ruhl, Rian ; Meffert, Matthias ; Niedrig, Christian ; Menesklou, Wolfgang ; Wagner, Stefan F. ; Gerthsen, Dagmar ; Bouwmeester, Henny J.M. ; Ivers-Tiffée, Ellen. / Yttrium doping of Ba0.5Sr0.5Co0.8Fe0.2O3-δ part II : Influence on oxygen transport and phase stability. In: Journal of the European Ceramic Society. 2018 ; Vol. 38, No. 5. pp. 2388-2395.
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abstract = "Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) in its cubic perovskite phase has attracted much interest for potential use as oxygen transport membrane (OTM) due to its very high oxygen permeability at high temperatures. However, performance degradation due to a sluggish phase decomposition occurs when BSCF is operated below 840 °C. Partial B-site substitution of the transition metal cations in BSCF by larger and redox-stable cations has emerged as a potential strategy to improve the structural stability of cubic BSCF. In this study, the influence of yttrium doping (0…10 mol-{\%}) on oxygen transport properties and stability of the cubic BSCF phase is assessed by in situ electrical conductivity relaxation (ECR) and electrical conductivity measurements during long-term thermal annealing both at 700 °C and 800 °C. Detailed phase analysis is performed by scanning electron microscopy (SEM) after long-term annealing of the samples in air at different temperatures.",
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Unger, LS, Ruhl, R, Meffert, M, Niedrig, C, Menesklou, W, Wagner, SF, Gerthsen, D, Bouwmeester, HJM & Ivers-Tiffée, E 2018, 'Yttrium doping of Ba0.5Sr0.5Co0.8Fe0.2O3-δ part II: Influence on oxygen transport and phase stability', Journal of the European Ceramic Society, vol. 38, no. 5, pp. 2388-2395. https://doi.org/10.1016/j.jeurceramsoc.2017.12.042

Yttrium doping of Ba0.5Sr0.5Co0.8Fe0.2O3-δ part II : Influence on oxygen transport and phase stability. / Unger, Lana Simone (Corresponding Author); Ruhl, Rian; Meffert, Matthias; Niedrig, Christian; Menesklou, Wolfgang; Wagner, Stefan F.; Gerthsen, Dagmar; Bouwmeester, Henny J.M.; Ivers-Tiffée, Ellen.

In: Journal of the European Ceramic Society, Vol. 38, No. 5, 01.05.2018, p. 2388-2395.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Yttrium doping of Ba0.5Sr0.5Co0.8Fe0.2O3-δ part II

T2 - Influence on oxygen transport and phase stability

AU - Unger, Lana Simone

AU - Ruhl, Rian

AU - Meffert, Matthias

AU - Niedrig, Christian

AU - Menesklou, Wolfgang

AU - Wagner, Stefan F.

AU - Gerthsen, Dagmar

AU - Bouwmeester, Henny J.M.

AU - Ivers-Tiffée, Ellen

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) in its cubic perovskite phase has attracted much interest for potential use as oxygen transport membrane (OTM) due to its very high oxygen permeability at high temperatures. However, performance degradation due to a sluggish phase decomposition occurs when BSCF is operated below 840 °C. Partial B-site substitution of the transition metal cations in BSCF by larger and redox-stable cations has emerged as a potential strategy to improve the structural stability of cubic BSCF. In this study, the influence of yttrium doping (0…10 mol-%) on oxygen transport properties and stability of the cubic BSCF phase is assessed by in situ electrical conductivity relaxation (ECR) and electrical conductivity measurements during long-term thermal annealing both at 700 °C and 800 °C. Detailed phase analysis is performed by scanning electron microscopy (SEM) after long-term annealing of the samples in air at different temperatures.

AB - Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) in its cubic perovskite phase has attracted much interest for potential use as oxygen transport membrane (OTM) due to its very high oxygen permeability at high temperatures. However, performance degradation due to a sluggish phase decomposition occurs when BSCF is operated below 840 °C. Partial B-site substitution of the transition metal cations in BSCF by larger and redox-stable cations has emerged as a potential strategy to improve the structural stability of cubic BSCF. In this study, the influence of yttrium doping (0…10 mol-%) on oxygen transport properties and stability of the cubic BSCF phase is assessed by in situ electrical conductivity relaxation (ECR) and electrical conductivity measurements during long-term thermal annealing both at 700 °C and 800 °C. Detailed phase analysis is performed by scanning electron microscopy (SEM) after long-term annealing of the samples in air at different temperatures.

KW - BSCF

KW - Electrical conductivity relaxation

KW - Oxygen transport membrane

KW - Structural stability

KW - Yttrium doping

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U2 - 10.1016/j.jeurceramsoc.2017.12.042

DO - 10.1016/j.jeurceramsoc.2017.12.042

M3 - Article

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JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

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