Effects of calcium impurity on phase relationship, ionic conductivity and microstructure of Na+- β/βaEuro3-alumina solid electrolyte

被引：28

作者：

Lee, Sung-Tae ^{[1
]}

Lee, Dae-Han ^{[1
]}

Lee, Sang-Min ^{[1
]}

Han, Sang-Soo ^{[1
]}

Lee, Sang-Hyung ^{[1
]}

Lim, Sung-Ki ^{[1
]}

机构：

[1] Konkuk Univ, Dept Mat Chem & Engn, 120 Neungdong Ro, Seoul 143701, South Korea

来源：

BULLETIN OF MATERIALS SCIENCE | 2016年 / 39卷 / 03期

关键词：

Na+-beta/beta ''-alumina; solid electrolyte; calcium impurity; specific resistance; BETA-ALUMINA ELECTROLYTE; SYSTEM; DEGRADATION;

D O I：

10.1007/s12034-016-1199-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ca-doped Na+- beta/beta('')-alumina was synthesized using a solid-state reaction. The changes in the properties of Na+- beta/beta('')-alumina resulting from the presence of Ca impurity were studied. Ca (0-5 wt%) was added to the respective samples, which were then sintered. The specimens were characterized using X-ray diffraction, scanning electron microscopy, densimetry and impedance analysis. In the sintered specimens, the beta('')-alumina phase fraction decreased as Ca content increased, whereas the relative sintered density increased. The surface morphology of Ca-doped Na+- beta/beta('')-alumina specimens showed a Ca-rich layer, which was the main cause of increase in the specific resistance.

引用

页码：729 / 735

页数：7

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