J Mater Sci Technol ›› 2010, Vol. 26 ›› Issue (6): 523-528.

• Materials for Sustainable Energy • Previous Articles     Next Articles

Preparation of Porous NiO-Ce0.8Sm0.2O1.9 Ceramics for Anode-supported Low-temperature Solid Oxide Fuel Cells

Han Chen, Kui Cheng, Zhicheng Wang, Wenjian Weng, Ge Shen, Piyi Du, Gaorong Han   

  1. Department of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
  • Received:2009-05-14 Revised:2010-01-15 Online:2010-06-22 Published:2010-06-22
  • Contact: wenjian weng
  • Supported by:

    the Zhejiang Provincial Natural Science Foundation of China (No. Y4080307)
    the research fund of Shenzhen Key Laboratory of Functional Polymers

Abstract:

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.

Key words: Porous ceramic, NiO-Ce0.8Sm0.2O1.9 (NiO-SDC), Polystyrene spheres, Microstructure, Anode-supported solid oxide fuel cells