Electrode polarization and electrical properties of the La0.6Sr0.4Co0.8Fe0.2O3-(delta),/O2ytria stabilizes zirconia interface: effect of gas phase composition and temperature

P. Tsiakaras; G. Marnellos; C. Athanasiou; M. Stoukides; Johan E. ten Elshof; Henricus J.M. Bouwmeester; H. Verweij

doi:10.1016/0167-2738(96)00328-1

Electrode polarization and electrical properties of the La0.6Sr0.4Co0.8Fe0.2O3-(delta),/O2ytria stabilizes zirconia interface: effect of gas phase composition and temperature

P. Tsiakaras, G. Marnellos, C. Athanasiou, M. Stoukides, Johan E. ten Elshof, Henricus J.M. Bouwmeester, H. Verweij

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Abstract

The steady-state current-overpotential characteristics of the O2,La0.6Sr0.4Co0.8Fe0.2O3 − δ/YSZ interface have been studied as a function of oxygen partial pressure and temperature. Ideal Nernst behaviour is observed in the temperature range between 400–900 °C and oxygen pressure range between 0.5–100 kPa. The results of I − η measurements indicate that in the potential range 0.05–0.25 V, the apparent anodic and cathodic charge transfer coefficients are close to unity: a = c = 1. The logarithm of the equilibrium exchange current density (I0) shows a positive dependence on the logarithm of the oxygen partial pressure with a slope m = 0.25 ± 0.05. These observations are in agreement with a proposed reaction model in which the diffusion of singly ionized oxygen adatoms (Oads−) on the oxide surface is assumed to be the rate determining step of the electrode reaction.

Original language	Undefined
Pages (from-to)	1451-1456
Number of pages	6
Journal	Solid state ionics
Volume	86-88
Issue number	86-88
DOIs	https://doi.org/10.1016/0167-2738(96)00328-1
Publication status	Published - 1996

Keywords

IR-12184
METIS-106536

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10.1016/0167-2738(96)00328-1

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Tsiakaras, P., Marnellos, G., Athanasiou, C., Stoukides, M., ten Elshof, J. E., Bouwmeester, H. J. M., & Verweij, H. (1996). Electrode polarization and electrical properties of the La0.6Sr0.4Co0.8Fe0.2O3-(delta),/O2ytria stabilizes zirconia interface: effect of gas phase composition and temperature. Solid state ionics, 86-88(86-88), 1451-1456. https://doi.org/10.1016/0167-2738(96)00328-1

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title = "Electrode polarization and electrical properties of the La0.6Sr0.4Co0.8Fe0.2O3-(delta),/O2ytria stabilizes zirconia interface: effect of gas phase composition and temperature",

abstract = "The steady-state current-overpotential characteristics of the O2,La0.6Sr0.4Co0.8Fe0.2O3 − δ/YSZ interface have been studied as a function of oxygen partial pressure and temperature. Ideal Nernst behaviour is observed in the temperature range between 400–900 °C and oxygen pressure range between 0.5–100 kPa. The results of I − η measurements indicate that in the potential range 0.05–0.25 V, the apparent anodic and cathodic charge transfer coefficients are close to unity: a = c = 1. The logarithm of the equilibrium exchange current density (I0) shows a positive dependence on the logarithm of the oxygen partial pressure with a slope m = 0.25 ± 0.05. These observations are in agreement with a proposed reaction model in which the diffusion of singly ionized oxygen adatoms (Oads−) on the oxide surface is assumed to be the rate determining step of the electrode reaction.",

keywords = "IR-12184, METIS-106536",

author = "P. Tsiakaras and G. Marnellos and C. Athanasiou and M. Stoukides and {ten Elshof}, {Johan E.} and Bouwmeester, {Henricus J.M.} and H. Verweij",

year = "1996",

doi = "10.1016/0167-2738(96)00328-1",

language = "Undefined",

volume = "86-88",

pages = "1451--1456",

journal = "Solid state ionics",

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Tsiakaras, P, Marnellos, G, Athanasiou, C, Stoukides, M, ten Elshof, JE , Bouwmeester, HJM & Verweij, H 1996, 'Electrode polarization and electrical properties of the La0.6Sr0.4Co0.8Fe0.2O3-(delta),/O2ytria stabilizes zirconia interface: effect of gas phase composition and temperature', Solid state ionics, vol. 86-88, no. 86-88, pp. 1451-1456. https://doi.org/10.1016/0167-2738(96)00328-1

Electrode polarization and electrical properties of the La0.6Sr0.4Co0.8Fe0.2O3-(delta),/O2ytria stabilizes zirconia interface: effect of gas phase composition and temperature. / Tsiakaras, P.; Marnellos, G.; Athanasiou, C. et al.
In: Solid state ionics, Vol. 86-88, No. 86-88, 1996, p. 1451-1456.

Research output: Contribution to journal › Article › Academic › peer-review

TY - JOUR

T1 - Electrode polarization and electrical properties of the La0.6Sr0.4Co0.8Fe0.2O3-(delta),/O2ytria stabilizes zirconia interface: effect of gas phase composition and temperature

AU - Tsiakaras, P.

AU - Marnellos, G.

AU - Athanasiou, C.

AU - Stoukides, M.

AU - ten Elshof, Johan E.

AU - Bouwmeester, Henricus J.M.

AU - Verweij, H.

PY - 1996

Y1 - 1996

N2 - The steady-state current-overpotential characteristics of the O2,La0.6Sr0.4Co0.8Fe0.2O3 − δ/YSZ interface have been studied as a function of oxygen partial pressure and temperature. Ideal Nernst behaviour is observed in the temperature range between 400–900 °C and oxygen pressure range between 0.5–100 kPa. The results of I − η measurements indicate that in the potential range 0.05–0.25 V, the apparent anodic and cathodic charge transfer coefficients are close to unity: a = c = 1. The logarithm of the equilibrium exchange current density (I0) shows a positive dependence on the logarithm of the oxygen partial pressure with a slope m = 0.25 ± 0.05. These observations are in agreement with a proposed reaction model in which the diffusion of singly ionized oxygen adatoms (Oads−) on the oxide surface is assumed to be the rate determining step of the electrode reaction.

AB - The steady-state current-overpotential characteristics of the O2,La0.6Sr0.4Co0.8Fe0.2O3 − δ/YSZ interface have been studied as a function of oxygen partial pressure and temperature. Ideal Nernst behaviour is observed in the temperature range between 400–900 °C and oxygen pressure range between 0.5–100 kPa. The results of I − η measurements indicate that in the potential range 0.05–0.25 V, the apparent anodic and cathodic charge transfer coefficients are close to unity: a = c = 1. The logarithm of the equilibrium exchange current density (I0) shows a positive dependence on the logarithm of the oxygen partial pressure with a slope m = 0.25 ± 0.05. These observations are in agreement with a proposed reaction model in which the diffusion of singly ionized oxygen adatoms (Oads−) on the oxide surface is assumed to be the rate determining step of the electrode reaction.

KW - IR-12184

KW - METIS-106536

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M3 - Article

SN - 0167-2738

VL - 86-88

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EP - 1456

JO - Solid state ionics

JF - Solid state ionics

IS - 86-88

ER -