雾化共沉淀法制备Ce_0_8_Gd_0_2_O_1_9_纳米粉体.pdfVIP

26 2 Vol.26 No.2 2007 2 ELECTRONIC COMPONENTS AND MATERIALS Feb. 2007 Ce0.8Gd0.2O1.9 1 1 2 1 Ce0.8Gd0.2O1.9 (Ce3+ Gd3+)0.2 mol/L60 r[AHC (Ce3+ Gd3+)] 3 1, Ce0.8Gd0.2O1.9 15 nm ;CeO2 TQ174 A 100102-0017-03 Preparation of nano-sized Ce0.8Gd0.2O1.9 powders by atomization co-deposition method 1 1 2 1 YANG Jian-ping CHEN Zhi-gang LI Xia-zhang CHEN Yang (1. Department of Material Science and Engineering,Jiangsu Polytechnic University, Changzhou 213016, China; 2. School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China) Abstract: Nano-sized Ce0.8Gd0.2O1.9 (20 GDC) powders were prepared by atomization co-deposition method using ammonium hydrogen carbonate (AHC) as the precipitant. The process parameters which influenced the sizes and agglomeration of 20 GDC powers were studied and its influence mechanism was discussed. The results show that the method can gain small and homogeneous nano-sized powders. The optimum parameter for preparing 20 GDC are obtained, viz the molar concentration of (Ce3++ Gd3+) is 0.2 mol/L, the reaction temperature is 60 , the molar ratio of AHC and (Ce3++ Gd3+) is 3.Under such conditions the 15 nm 20 GDC powders are obtained. Key words: non-metallic inorganic material; nanometer; ceria-based electrolytes; co-deposition; atomization CeO2 [46] SOFC 500 800 CeO2 SOFC [1] [7] CeO Gd O Sm O