Synthesis and Characterization of Doped Apatite-Type Lanthanum Silicates for SOFC Applications Full article
Conference |
17th International Conference on Solid State Ionics 28 Jun - 3 Jul 2009 , Toronto |
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Journal |
Solid State Ionics
ISSN: 0167-2738 |
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Output data | Year: 2011, Volume: 192, Number: 1, Pages: 158-162 Pages count : 5 DOI: 10.1016/j.ssi.2010.11.025 | ||||||||||||||
Tags | Apatites, Lanthanum silicates, Oxide ion conductors, SOFC, Solid oxide fuel cells | ||||||||||||||
Authors |
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Affiliations |
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Funding (1)
1 | European Commission | 33410 FP6-2004-NMP-TI-4 STREP MATSILC |
Abstract:
A series of iron- and/or aluminium-doped apatite-type lanthanum silicates (ATLS) La9.83Si6 ‐ x ‐ yAlxFeyO26 ± δ (x = 0, 0.25, 0.75, and 1.5, y = 0, 0.25, 0.75, and 1.5) were synthesized using the mechanochemical activation (MA), solid state reaction (SSR), Pechini (Pe) and sol–gel (SG) methods. The total conductivity of the prepared materials was measured under air in the temperature range 600–850 °C using 4-probe AC impedance spectroscopy. Its dependence on composition, synthesis method, sintering conditions and powder particle size was investigated. It was found that for electrolytes of the same composition, those prepared via mechanochemical activation exhibited the highest total specific conductivity, which was improved with increasing Al- and decreasing Fe-content. The highest conductivity value at 700 °C, equal to 2.04 × 10− 2 S cm− 1, was observed for the La9.83Si5Al0.75Fe0.25O26 ± δ electrolyte. La9.83Si4.5Fe1.5O26 ± δ electrolyte samples synthesized using the Pechini method exhibited higher conductivity when sintered conventionally than when spark-plasma sintering (SPS) was used.
Cite:
Gasparyan H.
, Neophytides S.
, Niakolas D.
, Stathopoulos V.
, Kharlamova T.
, Sadykov V.
, Van der Biest O.
, Jothinathan E.
, Louradour E.
, Joulin J.-P.
, Bebelis S.
Synthesis and Characterization of Doped Apatite-Type Lanthanum Silicates for SOFC Applications
Solid State Ionics. 2011. V.192. N1. P.158-162. DOI: 10.1016/j.ssi.2010.11.025 WOS Scopus РИНЦ
Synthesis and Characterization of Doped Apatite-Type Lanthanum Silicates for SOFC Applications
Solid State Ionics. 2011. V.192. N1. P.158-162. DOI: 10.1016/j.ssi.2010.11.025 WOS Scopus РИНЦ
Dates:
Submitted: | Sep 1, 2009 |
Accepted: | Nov 22, 2010 |
Published online: | Dec 21, 2010 |
Published print: | Jun 16, 2011 |
Identifiers:
Web of science | WOS:000292848800036 |
Scopus | 2-s2.0-79958831473 |
Elibrary | 20532920 |
Chemical Abstracts | 2011:729557 |
Chemical Abstracts (print) | 156:126929 |
OpenAlex | W2014651099 |