Mechanical strengthening of Sm-doped CeO2 ceramics by 1 mol% cobalt oxide for solid oxide fuel cell application

被引：4

作者：

Dong, Yingchao ^{[1
]}

Hampshire, Stuart ^{[1
]}

Zhou, Jian-er ^{[2
]}

Dong, Xinfa ^{[4
]}

Lin, Bin ^{[3
]}

Meng, Guangyao ^{[3
]}

机构：

[1] Univ Limerick, MSSI, Limerick, Ireland

[2] Jingdezhen Ceram Univ, Key Lab Jiangxi Univ Inorgan Membranes, Jingdezhen, Peoples R China

[3] Univ Sci & Technol China, USTC Lab Solid State Chem & Inorgan Membranes, Hefei, Peoples R China

[4] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 20期

关键词：

SOFC electrolyte; Sm-doped CeO2; CoO co-doping; Mechanical strengthening; ELECTROLYTES; ALUMINA; GD;

D O I：

10.1016/j.jpowsour.2011.06.012

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：

Combustion processed nano-sized Ce0.79Sm0.20Co0.01O2-delta (CSCoO) and Ce0.80Sm0.20O2-delta (CSO) were sintered at various temperatures, and mechanical properties and microstructures were characterized. The results demonstrate that besides a lowering of sintering temperature to achieve sufficient densification, the doping of very minor amounts of CoO (1 mol%) to CSO significantly enhanced mechanical properties. The CSCoo sintered at 1100 degrees C exhibits a biaxial flexural strength of 354 +/- 42 MPa which compared with 194 +/- 57 MPa for CSO with a similar relative density sintered at 1400 degrees C. This slight modification in chemical composition also resulted in a slight improvement in micro-hardness. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：8402 / 8405

页数：4

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