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- W2890594954 abstract "The perovskite-type oxides, having a general formula ABO3, are promising candidates for anode materials in solid oxide fuel cells. In particular, doped SrTiO3 based perovskites are potential mixed ionic-electronic conductors and they are known to have excellent thermal and chemical stability along with carbon and sulfur tolerance. In this work, DyxSr1-xTiO3-δ system with x = 0.03, 0.05, 0.08 and 0.10 is studied to understand the influence of Dy content on its structural and electrical behavior. Electrochemical properties are measured, both in air and hydrogen atmosphere, and structural characterizations are performed before and after electrochemical tests and compared each other to study the stability. Results show that DyxSr1-xTiO3-δ powders with x ≤ 0.05, are single phase, while for x ≥ 0.08 a small amount of secondary phases is formed. In air, the conductivity is predominantly mixed ionic-electronic type for x ≤ 0.05, becoming ionic for x ≥ 0.08. It is observed that conductivity, for each composition, increases passing from air to hydrogen and activation energy decreases. Dy0.05Sr0.95TiO3-δ shows the highest conductivity in air whereas Dy0.08Sr0.92TiO3-δ in H2 atmosphere. Degradation observed by XRD is negligible for x ≤ 0.05 but increases with higher Dy content." @default.
- W2890594954 created "2018-09-27" @default.
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- W2890594954 date "2018-10-01" @default.
- W2890594954 modified "2023-10-14" @default.
- W2890594954 title "Dy doped SrTiO3: A promising anodic material in solid oxide fuel cells" @default.
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- W2890594954 doi "https://doi.org/10.1016/j.ijhydene.2018.08.160" @default.
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