A facile combustion synthesis of Ce0.8Sm0.2O1.9 powders by in situ assembly of polymer

被引：7

作者：

Ma, Jianjun ^{[1
]}

Jiang, Cairong ^{[1
]}

Zhou, Xiaoliang ^{[1
]}

Meng, Guangyao ^{[1
]}

Liu, Xingqin ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 455卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

combustion synthesis; stoichiometric; conductivity; cell parameters; methylcellulose;

D O I：

10.1016/j.jallcom.2007.01.105

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 [物理化学]; 081704 [应用化学];

摘要：

A novel fuel, methylcellulose (MC) was used in the combustion synthesis of Ce0.8Sm0.2O1.9 (SDC) powders for the first time. The formation of SDC powders with small crystal size could be attributed to the special performance of MC, which made mixed nitrate entrapped within the cage formed by the cross-linking of MC chains. The precursor solution decomposed violently at about 150 degrees C confirmed by TG - DTA test. The influence of fuel contents on the powder's properties was investigated by XRD measurements. The experimental cell parameters calculation showed that stoichiometric SDC powders could be obtained only when stoichiometric or fuel-rich MC was used. High sintering activity was favorable for compacted bodies achieving almost near theoretical density. By this combustion synthesis method, SDC powders with high conductivity, which was 0.00765 S cm (- 1) at 600 degrees C, was obtained and suitable for the solid oxide fuel cell's applications. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：364 / 368

页数：5

共 25 条

[1]

Characterization of CeO2-ZrO2 mixed oxides.: Comparison of the citrate and sol-gel preparation methods [J].