A comparative study of NiO-Ce0.9Gd0.1O1.95 nanocomposite powders synthesized by hydroxide and oxalate co-precipitation methods

作者：Ding Changsheng^*; Sato Kazuhisa; Mizusaki Junichiro; Hashida Toshiyuki

来源：Ceramics International, 2012, 38(1): 85-92.

DOI：10.1016/j.ceramint.2011.06.041

• Sintering
• Nanocomposite powders
• NiO-GDC
• Co-precipitation synthesis

In this study, NiO-Ce0.9Gd0.1O1.95 (NiO-GDC) nanocomposite powders, which were applied as anode materials of low temperature solid oxide fuel cells (SOFCs), were synthesized by hydroxide and oxalate reverse co-precipitation methods, respectively. The crystal phases, crystallite size, particle size, particle size distribution, and sintering characteristics of the synthesized NiO-GDC nanocomposite powders were investigated and compared. Results showed that the different co-precipitation methods affected strongly the synthesis and characteristics of the NiO-GDC nanocomposite powders. The NiO-GDC nanocomposite powders could be synthesized at lower temperature by the hydroxide reverse co-precipitation method, and the synthesized NiO-GDC nanocomposite powders had better sinterability. The NiO-GDC nanocomposite powders synthesized by the oxalate reverse co-precipitation method had smaller particle size and uniform particle size distribution and, however, were easy to result in crack formation in the sintered disks.

• 出版日期2012-1