Properties of sol-gel prepared Ce1-xSmxO2-x/2 solid electrolytes

被引：158

作者：

Huang, W ^{[1
]}

Shuk, P ^{[1
]}

Greenblatt, M ^{[1
]}

机构：

[1] RUTGERS STATE UNIV,DEPT CHEM,PISCATAWAY,NJ 08855

来源：

SOLID STATE IONICS | 1997年 / 100卷 / 1-2期

关键词：

solid electrolyte; doped ceria; sol-gel; ionic conductivity; NONSTOICHIOMETRIC CERIUM DIOXIDE; OXYGEN-ION CONDUCTION; DOPED CERIA; DEFECT STRUCTURE; HYDROTHERMAL SYNTHESIS; ELECTRICAL-PROPERTIES; TRANSPORT; CERAMICS;

D O I：

10.1016/S0167-2738(97)00309-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The structure, thermal expansion and ionic conductivity of solid electrolytes based on samarium doped cerium oxide, Ce1-xSmxO2-x/2 (x = 0-0.30), prepared by the sol-gel method were systematically investigated in a wide range of temperature of 200-650 degrees C. The uniformly small particle size of the sol-gel prepared materials allows sintering of the samples into highly dense ceramic pellets at significantly lower temperature 1400 degrees C compared to that of 1600 degrees C required for samples prepared by solid state techniques. The ionic conductivity increases with increasing samarium substitution and reaches a maximum for the composition Ce0.80Sm0.20O1.9 (similar to 5 x 10(-3) S cm(-1) at 600 degrees C). Thermal expansion coefficients range between 8-10 x 10(-6) K-1.

引用

页码：23 / 27

页数：5

共 36 条

[1] BISMUTH OXIDE-BASED SOLID ELECTROLYTES FOR FUEL-CELLS [J].