中文摘要：

采用溶胶-凝胶法合成了过渡金属掺杂的CeO2新型中温固体氧化物燃料电池（IT—SOFCs）阳极材料Ce0．8M0．2O2-δ（M=Co，Fe，Mn）（20CDC、20FDC、20MDC）。采用共压-共烧结法制备了以NiO-20CDC、NiO-20FDC、NiO-20MDC复合阳极为支撑、以Ce0．8M0．2O2-δ（GDC）为电解质、以La0.8Sr0．2Co0．8Fe0.2O3-δ（LSCF）-GDC为复合阴极的单电池。利用XRD、SEM等方法对阳极材料进行了物相结构和微观形貌分析。在400，700℃范围内。以湿天然气（3％H2O）为燃料气、氧气为氧化气测试比较了三种电池的放电性能。结果表明：所制的20CDC、20FDC、20MDC粉体均为萤石型结构；在制备的电池中，（50％）NiO-20CDC阳极材料具有良好的孔道结构，且具有最佳的电化学性能，在650℃时其最大电流密度为148．84mA/cm^2,最大比功率为30．91mW/cm^2。

英文摘要：

In this paper, the samples of Ce0.8M0.2O2-δ（M=Co,Fe,Mn） （20 CDC,20 FDC,20 MDC） as anode materials for intermediate temperature solid oxide fuel cells （IT-SOFCs） were prepared by the sol-gel method. The NiO-20 CDC, NiO-20 FDC and NiO-20 MDC anode supported cells were fabricated by dry-pressing process using Ce0.8Gd0.2O2-δ（GDC） as electrolyte and La0.8Sr0.2Co0.8Fe0.2O3-δ（LSCF）-GDC-Ce0.8Gd0.2O2-δ as cathode. The crystal forms and microstructures have been investigated using XRD and SEM methods. The performances of single cells using humidified natural gas（3% H2O） as fuel and oxygen as oxidant were tested from 400 ℃ to 700 ℃. The results of experiment show that the obtained powers have a cubic fluorite structure. The （50%）NIO-20 CDC anode of the cells represents good structure of hole. The （50%）NiO-20 CDC anode supported-cell manifests the best electrochemical performances among the three cells. The maximum current density and power density are 148.84 mNcm2 and 30.91 mW/cm^2 at 650℃.