Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5150283 | Solid State Ionics | 2017 | 5 Pages |
Abstract
In this study, novel SrCe1 â xYbxO3 â α (x = 0, 0.05, 0.10, 0.15)-(Na/K)Cl composite electrolytes were synthesized at low temperature (750 °C). The structural and microstructural properties of the composite electrolytes are observed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). It was found that the upper doping limit of Yb3 + in SrCeO3 is 15 mol%. The XRD results shown that no chemical reactions take place between SrCe1 â xYbxO3 â α (x = 0, 0.05, 0.10, 0.15) and NaCl/KCl. The SEM images revealed that NaCl/KCl is coated on the surface of SrCe1 â xYbxO3 â α (x = 0, 0.05, 0.10, 0.15) act as a binder. The electrical conductivity is determined by impedance spectroscopy. The log Ï ~ log (pO2) plots results indicate that the composites are almost pure ionic conductors. Finally, the excellent performance of SCYb15-NK is obtained with a maximum power density of 615 mW·cmâ 2 at 700 °C.
Related Topics
Physical Sciences and Engineering
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Authors
Lin Sun, Hui Miao, Hongtao Wang,