Structural evolution of Sc-containing zirconia electrolytes

被引：61

作者：

Tietz, F

Fischer, W

Hauber, T

Mariotto, G

机构：

[1] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, IEV, D-52425 JULICH, GERMANY

[2] UNIV TRENT, DIPARTIMENTO FIS, I-38050 POVO, ITALY

[3] UNIV TRENT, INFM, I-38050 POVO, ITALY

来源：

SOLID STATE IONICS | 1997年 / 100卷 / 3-4期

关键词：

solid oxide fuel cell; zirconia-scandia electrolyte; X-ray diffraction; impedance spectroscopy; Raman spectroscopy;

D O I：

10.1016/S0167-2738(97)00356-1

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：

A powder of nominal composition (ZrO2)(0.886)(Sc2O3)(0.104)(Al2O3)(0.01) was synthesized by spray drying with the purpose of testing the performance of solid oxide fuel cells containing scandia-stabilized zirconia (ScSZ) as electrolyte. The phases resulting from calcination and sintering at different temperatures were investigated by XRD, impedance and Raman spectroscopy. At sintering temperatures of 1200-1400 degrees C nearly equal amounts of cubic and rhombohedral ScSZ were detected, whereas heat treatment higher than 1500 degrees C led to a cubic single-phase material. A preliminary reaction mechanism of phase formation is proposed with respect to the various results depending on heat treatment.

引用

页码：289 / 295

页数：7

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