Oxygen transport in La0.6Sr0.4Co1-yFeyO3-d

H.J.M. Bouwmeester; M.W. den Otter; B.A. Boukamp

doi:10.1007/s10008-003-0488-3

Oxygen transport in La0.6Sr0.4Co1-yFeyO3-d

H.J.M. Bouwmeester, M.W. den Otter, B.A. Boukamp

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Abstract

The surface exchange coefficient and chemical diffusion coefficient of oxygen for the perovskites La0.6Sr0.4Co1–yFeyO3–delta (y=0.2, 0.5 and 0.8) were measured using the conductivity relaxation technique. Measurements were performed between 600 and 800 °C in an oxygen partial pressure range between 10–4 and 1 bar. Both transport coefficients decrease markedly with decreasing oxygen partial pressure below about 10–2 bar at all temperatures. This is attributed to ordering of oxygen vacancies. Implications for using La0.6Sr0.4Co1–yFeyO3–delta as an oxygen separation membrane are discussed.

Original language	English
Pages (from-to)	599-605
Number of pages	7
Journal	Journal of solid state electrochemistry
Volume	8
Issue number	9
DOIs	https://doi.org/10.1007/s10008-003-0488-3
Publication status	Published - 2004

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title = "Oxygen transport in La0.6Sr0.4Co1-yFeyO3-d",

abstract = "The surface exchange coefficient and chemical diffusion coefficient of oxygen for the perovskites La0.6Sr0.4Co1–yFeyO3–delta (y=0.2, 0.5 and 0.8) were measured using the conductivity relaxation technique. Measurements were performed between 600 and 800 °C in an oxygen partial pressure range between 10–4 and 1 bar. Both transport coefficients decrease markedly with decreasing oxygen partial pressure below about 10–2 bar at all temperatures. This is attributed to ordering of oxygen vacancies. Implications for using La0.6Sr0.4Co1–yFeyO3–delta as an oxygen separation membrane are discussed.",

author = "H.J.M. Bouwmeester and {den Otter}, M.W. and B.A. Boukamp",

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T1 - Oxygen transport in La0.6Sr0.4Co1-yFeyO3-d

AU - Bouwmeester, H.J.M.

AU - den Otter, M.W.

AU - Boukamp, B.A.

PY - 2004

Y1 - 2004

N2 - The surface exchange coefficient and chemical diffusion coefficient of oxygen for the perovskites La0.6Sr0.4Co1–yFeyO3–delta (y=0.2, 0.5 and 0.8) were measured using the conductivity relaxation technique. Measurements were performed between 600 and 800 °C in an oxygen partial pressure range between 10–4 and 1 bar. Both transport coefficients decrease markedly with decreasing oxygen partial pressure below about 10–2 bar at all temperatures. This is attributed to ordering of oxygen vacancies. Implications for using La0.6Sr0.4Co1–yFeyO3–delta as an oxygen separation membrane are discussed.

AB - The surface exchange coefficient and chemical diffusion coefficient of oxygen for the perovskites La0.6Sr0.4Co1–yFeyO3–delta (y=0.2, 0.5 and 0.8) were measured using the conductivity relaxation technique. Measurements were performed between 600 and 800 °C in an oxygen partial pressure range between 10–4 and 1 bar. Both transport coefficients decrease markedly with decreasing oxygen partial pressure below about 10–2 bar at all temperatures. This is attributed to ordering of oxygen vacancies. Implications for using La0.6Sr0.4Co1–yFeyO3–delta as an oxygen separation membrane are discussed.

U2 - 10.1007/s10008-003-0488-3

DO - 10.1007/s10008-003-0488-3

M3 - Article

SN - 1432-8488

VL - 8

SP - 599

EP - 605

JO - Journal of solid state electrochemistry

JF - Journal of solid state electrochemistry

IS - 9

ER -

Oxygen transport in La0.6Sr0.4Co1-yFeyO3-d

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