Oxygen permeation modelling of perovskites

Bart A. van Hassel, B.A. van Hassel, Tatsuya Kawada, Natsuko Sakai, Harumi Yokokawa, Masayuki Dokiya, Henricus J.M. Bouwmeester

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Abstract

A point defect model was used to describe the oxygen nonstoichiometry of the perovskites La0.75Sr0.25CrO3, La0.9Sr0.1FeO3, La0.9Sr0.1CoO3 and La0.8Sr0.2MnO3 as a function of the oxygen partial pressure. Form the oxygen vacancy concentration predicte by the point defect model, the ionic conductivity was calculated assuming a vacancy diffusion mechanism. The ionic conductivity was combined with the Wagner model for the oxidation of metals to yield an analytical expression for the oxygen permeation current density as a function of the oxygen partial pressure gradient. A linear boundary condition was used to show the effect of a limiting oxygen exchange rate at the surface.
Original languageUndefined
Pages (from-to)295-305
Number of pages11
JournalSolid state ionics
Volume66
Issue number66
DOIs
Publication statusPublished - 1993

Keywords

  • METIS-106850
  • IR-12669

Cite this

van Hassel, B. A., van Hassel, B. A., Kawada, T., Sakai, N., Yokokawa, H., Dokiya, M., & Bouwmeester, H. J. M. (1993). Oxygen permeation modelling of perovskites. Solid state ionics, 66(66), 295-305. https://doi.org/10.1016/0167-2738(93)90419-4
van Hassel, Bart A. ; van Hassel, B.A. ; Kawada, Tatsuya ; Sakai, Natsuko ; Yokokawa, Harumi ; Dokiya, Masayuki ; Bouwmeester, Henricus J.M. / Oxygen permeation modelling of perovskites. In: Solid state ionics. 1993 ; Vol. 66, No. 66. pp. 295-305.
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abstract = "A point defect model was used to describe the oxygen nonstoichiometry of the perovskites La0.75Sr0.25CrO3, La0.9Sr0.1FeO3, La0.9Sr0.1CoO3 and La0.8Sr0.2MnO3 as a function of the oxygen partial pressure. Form the oxygen vacancy concentration predicte by the point defect model, the ionic conductivity was calculated assuming a vacancy diffusion mechanism. The ionic conductivity was combined with the Wagner model for the oxidation of metals to yield an analytical expression for the oxygen permeation current density as a function of the oxygen partial pressure gradient. A linear boundary condition was used to show the effect of a limiting oxygen exchange rate at the surface.",
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van Hassel, BA, van Hassel, BA, Kawada, T, Sakai, N, Yokokawa, H, Dokiya, M & Bouwmeester, HJM 1993, 'Oxygen permeation modelling of perovskites', Solid state ionics, vol. 66, no. 66, pp. 295-305. https://doi.org/10.1016/0167-2738(93)90419-4

Oxygen permeation modelling of perovskites. / van Hassel, Bart A.; van Hassel, B.A.; Kawada, Tatsuya; Sakai, Natsuko; Yokokawa, Harumi; Dokiya, Masayuki; Bouwmeester, Henricus J.M.

In: Solid state ionics, Vol. 66, No. 66, 1993, p. 295-305.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Oxygen permeation modelling of perovskites

AU - van Hassel, Bart A.

AU - van Hassel, B.A.

AU - Kawada, Tatsuya

AU - Sakai, Natsuko

AU - Yokokawa, Harumi

AU - Dokiya, Masayuki

AU - Bouwmeester, Henricus J.M.

PY - 1993

Y1 - 1993

N2 - A point defect model was used to describe the oxygen nonstoichiometry of the perovskites La0.75Sr0.25CrO3, La0.9Sr0.1FeO3, La0.9Sr0.1CoO3 and La0.8Sr0.2MnO3 as a function of the oxygen partial pressure. Form the oxygen vacancy concentration predicte by the point defect model, the ionic conductivity was calculated assuming a vacancy diffusion mechanism. The ionic conductivity was combined with the Wagner model for the oxidation of metals to yield an analytical expression for the oxygen permeation current density as a function of the oxygen partial pressure gradient. A linear boundary condition was used to show the effect of a limiting oxygen exchange rate at the surface.

AB - A point defect model was used to describe the oxygen nonstoichiometry of the perovskites La0.75Sr0.25CrO3, La0.9Sr0.1FeO3, La0.9Sr0.1CoO3 and La0.8Sr0.2MnO3 as a function of the oxygen partial pressure. Form the oxygen vacancy concentration predicte by the point defect model, the ionic conductivity was calculated assuming a vacancy diffusion mechanism. The ionic conductivity was combined with the Wagner model for the oxidation of metals to yield an analytical expression for the oxygen permeation current density as a function of the oxygen partial pressure gradient. A linear boundary condition was used to show the effect of a limiting oxygen exchange rate at the surface.

KW - METIS-106850

KW - IR-12669

U2 - 10.1016/0167-2738(93)90419-4

DO - 10.1016/0167-2738(93)90419-4

M3 - Article

VL - 66

SP - 295

EP - 305

JO - Solid state ionics

JF - Solid state ionics

SN - 0167-2738

IS - 66

ER -

van Hassel BA, van Hassel BA, Kawada T, Sakai N, Yokokawa H, Dokiya M et al. Oxygen permeation modelling of perovskites. Solid state ionics. 1993;66(66):295-305. https://doi.org/10.1016/0167-2738(93)90419-4