Direct preparation of CE0.8SM0.2O1.9 powders oxidized with H2O2 for low temperature sofcs application

被引：0

作者：

Huang, Jianbing ^{[1
]}

Mao, Zongqiang ^{[1
]}

Zhu, Bin ^{[2
]}

Yang, Lizhai ^{[1
]}

Peng, Ranran ^{[1
]}

Gao, Ruifeng ^{[1
]}

机构：

[1] Tsinghua Univ, INET, Beijing 100084, Peoples R China

[2] Royal Inst Technol, S-10044 Stockholm, Sweden

来源：

PROCEEDINGS OF THE 3RD INTERNATIONAL CONFERENCE ON FUEL CELL SCIENCE, ENGINEERING, AND TECHNOLOGY | 2005年

关键词：

samarium doped ceria (SDC); oxidization; H2O2; composite electrolyte; low temperature solid oxide fuel cells (LTSOFCs);

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel method was developed to prepare fine doped ceria (DCO) powders directly. Ceria doped with 20 mol. % of samarium (Ce0.8Sm0.2O1.9, SDC) was prepared by in-situ oxidization of hydroxide precipitates with H2O2 in the solutions. The resultant powder desiccated at 85 degrees C overnight was characterized by X-ray diffraction (XRD), thermogravimetry/differential thermal analysis (TG/DTA), and transmission electron microscopy (TEM). The XRD pattern showed that the as-dried SDC powder is single phase with a cubic fluorite structure like that of pure CeO2. An anode-supported SOFC was also fabricated based on SDC and 20wt. % (62mol. %Li2CO3-38 mol. %K2CO3) composite electrolyte, LiNiO2 as cathode and NiO as anode, by cold pressing. Using hydrogen as the fuel and air as the oxidant, the I-V and I-P characteristics exhibit excellent performances and the maximum power densities are about 696, 469, 377 and 240 MWcm(-2) at 650, 600, 550 and 500 degrees C, respectively.

引用

页码：295 / 298

页数：4

共 11 条

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