Preparation of Porous NiO-Ce_0.8Sm_0.2O_1.9 Ceramics for Anode-supported Low-temperature Solid Oxide Fuel Cells

Han Chen,Kui Cheng,Zhicheng Wang,Wenjian Weng,Ge Shen,Piyi Du and Gaorong Han Department of Materials Science and Engineering,State Key Laboratory of Silicon Materials,Zhejiang University,Hangzhou 310027,China

摘 要：Porous NiO-Ce0.8Sm0.2O1.9（NiO-SDC） ceramics with homogeneous pore distribution were prepared using polystyrene（PS） spheres as pore templates.NiO-SDC powders were synthesized by a glycine-nitrate method,ultrasonically mixed with PS spheres in ethanol,dried and then pressed into green pellets.The pellets were sintered to yield porous NiO-SDC ceramics.The effects of the sintering temperature on the microstructure and mechanical strength of the ceramics were investigated.NiO-SDC ceramics sintered at 1200 and 1350°C have interconnected pore structures and high compression strength.When single cells were fabricated using porous NiO-SDC ceramics as anode-supported layers,the peak power density of the cells at 600°C was 333 and 353 mW·cm-2 for ceramics sintered at 1200 and 1350°C,respectively.The results indicated that these porous ceramic materials are promising for anode substrates for solid oxide fuel cells.

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