中文摘要：

采用固相法合成电解质材料La1-xSrxGa1-yMgyO3-δ（LSGM）和阳极材料La1-xSrxCr1-yMnyO3-δ（LSCM），用溶胶-凝胶法合成阴极材料La1-xSrxFe1-yCoyO3-δ（LSFC）。利用扫描电子显微镜（SEM）、X射线衍射分析（XRD）、交流阻抗、直流四探针法等技术，对材料的结构及性能进行表征。在1450℃和1480℃下烧结24h均得到了单一相的LSGM；在1250℃和1350℃下烧结15h均得到了单一相的LSCM，LSCM在850℃时的总电导率为1．5S／cm：LSGM的阻抗图谱由两个半圆组成，显示出良好的离子电导特性；合成LSFC的胶体经过400℃和750℃焙烧后，形成了单一相的LSFC；用丝网印刷方式，制备LSCM／LSGM／LSFC（LSCM）三合一复合膜，电极膜的烧结温度为1150℃。以此复合膜为基础组装单电池并进行性能考察。

英文摘要：

La1-xSrxGa1-yMgyO3-δ（LSGM） electrolyte and La1-xSrxCr1-yMgyO3-δ（LSGM） anode materials were synthe-sized by solid state reaction method, and La1-xSrxFe1-yCoyO3-δ（LSFC） cathode material by sol-gel method The microstructura and characteristics of them were tested by X-ray diffraction （XRD）, scanning electron microcopy （SEM）, AC impedance, and four-probe direct currant methods Pure phase LSGM was prepared after sintering for 24 h at both 1 450 ℃ and 1 480 ℃. Pure phase LSCM was prepared after sintering for 15 h at both 1 250 ℃ and 1 350 ℃, and the total conductivity of LSCM was 1.5 S/cm at 850 ℃. AC impedance spectra show that LSGM has good ionic conductivity. Single-phase LSFC was obtained when its precursor was sintered two times at 400 ℃ and 750 ℃, respectively LSCM anode and LSFC （LSCM） composite cathode films were prepared by screen printing method by sintedng at 1 150 ℃ The performance of cell consisting of the above composite membrane was investigated.