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- W1986322092 abstract "The influence of A-site cation (Ln = La, Pr, Sm) on the crystal structure of Sr-doped ferrite perovskites (Ln0.8Sr0.2FeO3 − δ, LnSF) was studied and the results used to interpret the differences in electronic conductivity. The electronic conductivity decreased with decreasing A-site cation radius, i.e. in the order La > Pr > Sm between 573 K and 1173 K, whereas the ionic conductivity increased in the order La < Sm < Pr between 923 K and 1073 K. The ionic conductivity of Pr0.8Sr0.2FeO3 − δ (PSF) was more than one order of magnitude higher than that of La0.8Sr0.2FeO3 − δ (LSF) at 973 K. To evaluate these materials as cathode materials for solid oxide fuel cells (SOFCs), the chemical compatibility of LnSF with yttria-stabilized zirconia (YSZ) was investigated. Despite significant differences in ionic and electronic conductivity, the performance of the symmetric cells with composite cathodes formed by infiltration of doped LnFeO3 into YSZ and calcination to 1123 K were essentially independent of the transport properties of the cathode materials, exhibiting an identical impedance of 0.08 Ω∙cm2 at 973 K." @default.
- W1986322092 created "2016-06-24" @default.
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- W1986322092 date "2012-03-01" @default.
- W1986322092 modified "2023-10-18" @default.
- W1986322092 title "The effect of A-site cation (Ln=La, Pr, Sm) on the crystal structure, conductivity and oxygen reduction properties of Sr-doped ferrite perovskites" @default.
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- W1986322092 doi "https://doi.org/10.1016/j.ssi.2012.02.028" @default.
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