Temperature-programmed C18O2 SSITKA for powders of fast oxide-ion conductors: Estimation of oxygen self-diffusion coefficients

V. Sadykov; E. Sadovskaya; A. Bobin; T. Kharlamova; N. Uvarov; A. Ulikhin; Ch Argirusis; G. Sourkouni; V. Stathopoulos

doi:10.1016/j.ssi.2014.11.004

Temperature-programmed C¹⁸O₂ SSITKA for powders of fast oxide-ion conductors: Estimation of oxygen self-diffusion coefficients

V. Sadykov, E. Sadovskaya, A. Bobin, T. Kharlamova, N. Uvarov, A. Ulikhin, Ch Argirusis, G. Sourkouni, V. Stathopoulos

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

27 Citations (Scopus)

Abstract

For powders of oxide-ion conductors based on Al/Fe- doped lanthanum silicates as well as Sc+Ce-doped zirconia, the temperature -programmed exchange with C¹⁸O₂ in the SSITKA mode was applied for estimation of the oxygen self-diffusion coefficients D_o. Comparison with results obtained for dense ceramics of these electrolytes using SIMS isotope profiling and conductivity measurements demonstrated a reasonable agreement for powders sintered at high temperatures, thus providing required verification of C¹⁸O₂ SSITKA approach. For powders calcined at moderate temperatures much lower values of D_O were obtained thus suggesting a strong negative effect of inhomogeneity of dopants spatial distribution on the oxygen mobility.

Original language	English
Pages (from-to)	69-72
Number of pages	4
Journal	Solid State Ionics
Volume	271
DOIs	https://doi.org/10.1016/j.ssi.2014.11.004
Publication status	Published - Mar 2015

Keywords

COSSITKA
Doped lanthanum silicates
Doped zirconia
Fast oxide-ion conductors
Oxygen diffusion coefficient

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10.1016/j.ssi.2014.11.004

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@article{99c04a49604647f19402d46ed70c335d,

title = "Temperature-programmed C18O2 SSITKA for powders of fast oxide-ion conductors: Estimation of oxygen self-diffusion coefficients",

abstract = "For powders of oxide-ion conductors based on Al/Fe- doped lanthanum silicates as well as Sc+Ce-doped zirconia, the temperature -programmed exchange with C18O2 in the SSITKA mode was applied for estimation of the oxygen self-diffusion coefficients Do. Comparison with results obtained for dense ceramics of these electrolytes using SIMS isotope profiling and conductivity measurements demonstrated a reasonable agreement for powders sintered at high temperatures, thus providing required verification of C18O2 SSITKA approach. For powders calcined at moderate temperatures much lower values of DO were obtained thus suggesting a strong negative effect of inhomogeneity of dopants spatial distribution on the oxygen mobility.",

keywords = "COSSITKA, Doped lanthanum silicates, Doped zirconia, Fast oxide-ion conductors, Oxygen diffusion coefficient",

author = "V. Sadykov and E. Sadovskaya and A. Bobin and T. Kharlamova and N. Uvarov and A. Ulikhin and Ch Argirusis and G. Sourkouni and V. Stathopoulos",

year = "2015",

month = mar,

doi = "10.1016/j.ssi.2014.11.004",

language = "English",

volume = "271",

pages = "69--72",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier Science B.V.",

}

Temperature-programmed C¹⁸O₂ SSITKA for powders of fast oxide-ion conductors : Estimation of oxygen self-diffusion coefficients. / Sadykov, V.; Sadovskaya, E.; Bobin, A.; Kharlamova, T.; Uvarov, N.; Ulikhin, A.; Argirusis, Ch; Sourkouni, G.; Stathopoulos, V.

In: Solid State Ionics, Vol. 271, 03.2015, p. 69-72.

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

TY - JOUR

T1 - Temperature-programmed C18O2 SSITKA for powders of fast oxide-ion conductors

T2 - Estimation of oxygen self-diffusion coefficients

AU - Sadykov, V.

AU - Sadovskaya, E.

AU - Bobin, A.

AU - Kharlamova, T.

AU - Uvarov, N.

AU - Ulikhin, A.

AU - Argirusis, Ch

AU - Sourkouni, G.

AU - Stathopoulos, V.

PY - 2015/3

Y1 - 2015/3

N2 - For powders of oxide-ion conductors based on Al/Fe- doped lanthanum silicates as well as Sc+Ce-doped zirconia, the temperature -programmed exchange with C18O2 in the SSITKA mode was applied for estimation of the oxygen self-diffusion coefficients Do. Comparison with results obtained for dense ceramics of these electrolytes using SIMS isotope profiling and conductivity measurements demonstrated a reasonable agreement for powders sintered at high temperatures, thus providing required verification of C18O2 SSITKA approach. For powders calcined at moderate temperatures much lower values of DO were obtained thus suggesting a strong negative effect of inhomogeneity of dopants spatial distribution on the oxygen mobility.

AB - For powders of oxide-ion conductors based on Al/Fe- doped lanthanum silicates as well as Sc+Ce-doped zirconia, the temperature -programmed exchange with C18O2 in the SSITKA mode was applied for estimation of the oxygen self-diffusion coefficients Do. Comparison with results obtained for dense ceramics of these electrolytes using SIMS isotope profiling and conductivity measurements demonstrated a reasonable agreement for powders sintered at high temperatures, thus providing required verification of C18O2 SSITKA approach. For powders calcined at moderate temperatures much lower values of DO were obtained thus suggesting a strong negative effect of inhomogeneity of dopants spatial distribution on the oxygen mobility.

KW - COSSITKA

KW - Doped lanthanum silicates

KW - Doped zirconia

KW - Fast oxide-ion conductors

KW - Oxygen diffusion coefficient

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DO - 10.1016/j.ssi.2014.11.004

M3 - Article

AN - SCOPUS:84923233276

VL - 271

SP - 69

EP - 72

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

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