IONIC CONDUCTIVITY AND MICROSTRUCTURE OF CERIA-BASED POWDERS SYNTHESIZED BY GLYCINE COMBUSTION FOR SOFC

被引：0

作者：

Srisuwan, Anuwat ^{[1
]}

Wattanasiriwech, Darunee ^{[1
]}

Wattanasiriwech, Suthee ^{[1
]}

Aungkavattana, Pavadee ^{[2
]}

机构：

[1] Mae Fah Luang Univ, Sch Sci, Chiang Rai 57100, Thailand

[2] Natl Met & Mat Technol Ctr, Pathum Thani 12120, Thailand

来源：

SURANAREE JOURNAL OF SCIENCE AND TECHNOLOGY | 2013年 / 20卷 / 01期

关键词：

Ceria-based electrolyte; GDC; combustion; SOFC;

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Nanocrystalline Ce0.9Gd0.1O1.95 powders (GDC) have been successfully synthesized using combustion synthesis with metal nitrates as an oxidant and glycine as the fuel. X-ray diffraction patterns of the as-burnt GDC powders showed a single phase cubic fluorite structure. The crystalline size of the GDC powders increased with increasing the calcination temperatures. The densification and grain size of the GDC was found to increase when the sintering temperatures were increased from 1200-1350 degrees C. Grain growth was observed after sintering at 1350 degrees C, while the optimum densification and grain size was obtained after sintering at 1300 degrees C. The grain interior and grain boundary conductivity related to the degree of densification and grain size of the sintered GDC electrolyte is discussed in this study.

引用

页码：35 / 41

页数：7