中文摘要：

60wt% Ce _0.8 Gd _0.2 O ₂₋–40wt% PrBaCo _2–x Fe _x O ₃₋(0 ≤x≤2 ) 被联合柠檬酸盐和乙烯肼 tetraacetic 酸(EDTA ) 准备 complexing 方法。X 光检查衍射(XRD ) 结果揭示了在进行离子的阶段 CGO 和进行电子的阶段 PBC _2−x F _x 在在空中的 sintering 以后的 O。Fe 离子的掺杂物在公司 ₂ 空气下面在阶段结构稳定性和氧渗透上有重要效果，它被 XRD，扫描热量测定(TG–DSC ) 的 thermogravimetry–differential，扫描电子显微镜学(SEM ) 和氧浸透实验证实。CGO–PBC _0.5 F _1.5 O 双阶段的膜表明了 2.71 ×10 ⁻⁷ molcm ⁻² 有 50mol% He/CO ₂ 的 s ⁻¹ 作为在 925 °C，和这价值的 sweep 气体比 perovskite 类型膜的高得多。当时，在氧浸透过程的限制率的步从体积散开改变了到表面氧交换 CGO–PBC _0.5 F _1.5 O 膜厚度减少了到 0.8mm 或更少。由于在公司 ₂ 空气下面的高氧浸透流动和优秀结构的稳定性， CGO–PBC _0.5 F _1.5 O 膜是为在 oxy 燃料燃烧技术把氧与空气分开的大潜在的候选人材料。

英文摘要：

Dual-phase membranes of 60 wt% Ce0.8Gd0.2O2-δ-40 wt% Pr Ba Co2exFexO3 d（0 x 2） were prepared by a combined citrate and ethylene diamine tetraacetic acid（EDTA） complexing method. X-ray diffraction（XRD）results revealed the good chemical compatibility between ion-conducting phase CGO and electron-conducting phases PBC2 xFxO after sintering in air. The Fe ionic dopant had a significant effect on the phase structure stability and oxygen permeability under CO2 atmosphere, which was confirmed by XRD, thermogravimetrye differential scanning calorimetry（TGeD SC）, scanning electron microscopy（SEM） and oxygen permeation experiments. CGOeP BC0.5F1.5O dual-phase membrane demonstrated a stable oxygen permeation flux of2.71x10-7mol cm 2s 1with 50 mol% He/CO2 as the sweep gas at 925 C, and this value was much higher than that of perovskite-type membranes. The rate-limiting step in the oxygen permeation process changed from the bulk diffusion to the surface oxygen exchange when the CGOeP BC0.5F1.5O membrane thickness decreased to 0.8 mm or less. Due to the high oxygen permeation fluxes and the excellent structural stability under CO2 atmosphere, the CGOeP BC0.5F1.5O membrane is a great potential candidate material for separating oxygen from air in the oxy-fuel combustion techniques.