A series of mixed ionic-electronic conductors (SrBa)_1-xPr_x(CuTi)_0.2Fe_0.8O_3-δ ((SB)_1-xP_xCTF, x = 0–1.0, with interval of 0.2) are synthesized. A single cubic perovskite structure is obtained for x = 0–0.8 while secondary phases are observed for x = 1. With increasing Pr content, the electrical conductivity of dense (SB)_1-xP_xCTF increases significantly while the thermal expansion coefficient decreases continuously from 29.6 × 10⁻⁶ K⁻¹ for x = 0 to 11.6 × 10⁻⁶ K⁻¹ for x = 0.8. Good chemical compatibility is observed between (SB)_1-xP_xCTF and BaZr_0.1Ce_0.7Y_0.2O_3-δ (BZCY) or Ce_0.8Sm_0.2O_2-δ (SDC). Among all single cells with NiO-BZCY|BZCY|(SB)_1-xP_xCTF-SDC configuration, the best comprehensive electrochemical performance is obtained for x = 0.4. The maximum power density of single cells is 925 ± 38 mW·cm⁻² at 750 °C. The corresponding polarization resistance is only 0.07 Ω·cm². With the help of electrochemical impedance spectra of both single cells and symmetrical cells, the effects of Pr content on the electrochemical properties are discussed.

合成了一系列混合离子电子导体（SrBa）_1-x Pr _x（CuTi）_0.2 Fe _0.8 O3 _-δ（（SB）_1-x P _x CTF，x = 0-1.0，间隔为0.2） 。x = 0-0.8时获得单一的钙钛矿结构，而x = 1时观察到第二相。随着Pr含量的增加，致密（SB）_1-x P _x CTF的电导率显着增加，而热膨胀系数降低对于x = 0从29.6×10 ^{− 6}  K ^{− 1}连续到11.6×10 ^{− 6}  K ^{− 1}对于x = 0.8。在（SB）_1-x P _x CTF和BaZr _0.1 Ce _0.7 Y _0.2 O3 _-δ（BZCY）或Ce _0.8 Sm _0.2 O2 _-δ（SDC）之间观察到良好的化学相容性。在NiO-BZCY | BZCY |（SB）_1-x P _x CTF-SDC构型的所有单电池中，对于x = 0.4，可获得最佳的综合电化学性能。750°C时，单电池的最大功率密度为925±38 mW·cm ^{- 2}。相应的极化电阻仅为0.07Ω·cm ²。借助于单电池和对称电池的电化学阻抗谱，讨论了Pr含量对电化学性能的影响。