中文摘要：

制备了Ag与Gd掺杂的氧化铈（GDC）复合的电极材料。采用氧化钇稳定的氧化锆（YSZ）为电解质，Ag．GDC为阴极和阳极，组装成固体氧化物燃料电池（SOFC），采用担载5％（质量分数）Fe的活性炭为SOFC的燃料，对此直接碳SOFC（DC—SOFC）的输出性能及阻抗谱进行测试，并与采用传统阴极（掺Sr的锰酸镧与YSZ的复合材料）的DC—SOFC性能进行了比较，发现Ag—GDC具有更好的性能。采用扫描电镜（SEM）对电池的微观结构进行了分析，并就其对电池性能的影响进行了分析。

英文摘要：

Composite of silver （Ag） and gadolinia （Gd） doped ceria （GDC） was prepared and applied as elec-trodes of a solid oxide fuel cell （ SOFC）, with yttria stabilized zirconia （YSZ） as electrolyte. The SOFC was test-ed, directly using 5% Fe-loaded activated carbon as the fuel （DC-SOFC）. Its electrochemical performance wascompared with that of a similar cell with conventionalcomposite cathode of strontium-doped lanthanum manganiteand YSZ. The results showed that Ag-GDC could be used as both cathode and anode of a DC-SOFC, and the elec-trochemical performance of the cell with Ag-GDC as cathode was better than that with LSM-YSZ. Scanning electronmicroscopy （SEM） was used to characterize the microstructure of the cells. And the factors which affecting theelectrochemical performance of the cells were analyzed