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- W4387629168 abstract "The chemical modification of perovskites is one of the most effective design strategies for electrode materials for solid oxide cells. In this work, the tungsten doping in Sr2Fe2−xWxO6−δ shows a significant impact on their physicochemical properties, and it leads to a substantial change of electrochemical properties in the air and reducing conditions, with Sr2Fe1.8W0.2O6−δ (Rp = 0.06 Ω cm2 at 800 °C stable for 100 h in air) and Sr2Fe1.6W0.4O6−δ (Rp = 0.56 Ω cm2 at 800 °C over 100 h in 5 vol% H2/Ar) being the best air and fuel electrode candidates, respectively. We have proposed an attractive design of high-performance quasi-symmetrical solid oxide cells with 80%Sr2Fe1.8W0.2O6−δ+20%GDC | LSGM | 80%Sr2Fe1.6W0.4O6−δ+20%GDC, demonstrating excellent power outputs (874 mW cm−2 at 850 °C in wet H2) and good current density of 743 mA cm−2 at 1.5 V in electrolysis mode at 750 °C. A good performance of 451 mW cm−2 was also recorded in wet CH4 at 800 °C. The in situ exsolved metallic iron nanoparticles decorated on the Sr2Fe1.6W0.4O6−δ anode contribute to the excellent electrochemical performance of cells. This study provides a successful scenario for designing high-performance symmetrical solid oxide cells with a facile chemical modification strategy for ferrites electrodes with in situ exsolution of nanoparticles." @default.
- W4387629168 created "2023-10-14" @default.
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- W4387629168 date "2023-12-01" @default.
- W4387629168 modified "2023-10-15" @default.
- W4387629168 title "Designing high-performance quasi-symmetrical solid oxide cells with a facile chemical modification strategy for Sr2Fe2−xWxO6−δ ferrites electrodes with in situ exsolution of nanoparticles" @default.
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- W4387629168 doi "https://doi.org/10.1016/j.jpowsour.2023.233707" @default.
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