Carbonate co-precipitation of Gd2O3-doped CeO2 solid solution nano-particles

被引：196

作者：

Tok, AIY ^{[1
]}

Luo, LH ^{[1
]}

Boey, FYC ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Engn, Singapore 2263, Singapore

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 383卷 / 02期

关键词：

Gd2O(3)-doped CeO; carbonate co-precipitation; nano-particles; solid oxide fuel cells; microstructure; solid solution;

D O I：

10.1016/j.msea.2004.05.071

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper reports on the synthesis of 20mol% Gd2O3-doped CeO2 solid solution (20 GDC) nano-particles via carbonate co-precipitation. Precursors and calcined particles were characterized using TGA, XRD, BET, FESEM, and TEM. From the diffraction pattern using XRD with TEM, it was shown that the Gd3+ replaced the Ce4+ lattice in the fluorite structure (FCC) Of CeO2, as opposed to it being a second phase in the CeO2 structure. The 20 GDC particles were calcined at 700degreesC for 2 h, and sintered to >99% density at a very low sintering temperature of 1150degreesC for 4 It. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：229 / 234

页数：6

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