A microwave-induced solution-polymerization synthesis of doped LaGaO3 powders

作者：Zhai Yuling; Ye Chang; Xiao Jianzhong^*; Dai Lei

来源：Journal of Power Sources, 2006, 163(1): 316-322.

DOI：10.1016/j.jpowsour.2006.07.069

• SOFC
• synthesis
• microwave
• doped LaGaO3
• solution polymerization

A new method, called the microwave-induced solution-polymerization synthesis (denoted as MW), and the conventional Pechini (denoted as PH) method have been used to prepare powders of La0.8Sr0.2Ga0.83Mg0.17O2.815 (denoted as LS(0.2)GM(0.17)) and La0.8Sr0.2(Ga0.9Co0.1)(0.83)Mg0.17O2.815 (denoted as LS(0.2)GCM(0.17)). A higher heating rate and a more homogenous heating manner without thermal gradients in the microwave oven resulted in a pure LSGCM powder after calcination at 1400 degrees C for 9 hours (h) and purer LSGM (6.2% secondary phases). The grain size of the pellets of the above two powders was 2-3 mu m without segregation. The densities of LS(0.2)GM(0.17)/MW and LS(0.2)GCM(0.17)/MW pellets, sintered at 1400 degrees C for 9 h, were 6.45 and 6.30 g cm(-3), respectively.

• 出版日期2006-12-7
• 单位华中科技大学