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- W4293387265 endingPage "123497" @default.
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- W4293387265 abstract "The effect of CuO addition on the microstructure and ionic conductivity of 8 mol% yttria-stabilized zirconia (8YSZ) were investigated. Undoped and 1 mol%, 1.5 mol%, 2 mol%, 2.5 mol% and 3 mol% CuO-doped 8YSZ bulks were prepared by sol-gel synthesis, cold pressing forming, and high-temperature sintering. The microstructure, phase composition, and ionic conductivity of the samples were characterized in detail to determine whether it could be used as alternative electrolyte material for the intermediate and low temperature solid oxide fuel cells. The results reveal that all samples present cubic zirconia. With increasing the CuO-doping content, the lattice parameter of the samples decreases, while the relative density of the samples increases from 66 to 85%, and the mean grain size increases from 0.90 to 2.63 μm. Furthermore, it is found that 2 mol% CuO doped 8YSZ possesses the minimum activation energy of 0.945 eV and the maximum AC ionic conductivity of 5.75 × 10 −2 S·cm −1 measured at 750 °C. The change in the ionic conductivity with the CuO-doping content is closely related to microstructural evolution and defect association in the materials. The doping of CuO affects the microstructure and relative density of 8YSZ samples, and then affects its ionic conductivity. • CuO-doped 8YSZ materials were synthesized by sol-gel and calcination. • The dopant content affects the structure and ionic conductivity of sintered bulks. • The relative density of the bulks increases with increasing the amount of dopant. • 2 mol% CuO-doped 8YSZ bulk exhibits the maximum ionic conductivity." @default.
- W4293387265 created "2022-08-28" @default.
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- W4293387265 date "2022-11-01" @default.
- W4293387265 modified "2023-10-12" @default.
- W4293387265 title "Evolutions in the microstructure and ionic conductivity of CuO-doped yttria-stabilized zirconia" @default.
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- W4293387265 doi "https://doi.org/10.1016/j.jssc.2022.123497" @default.
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