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DIRECT PREPARATION OF CE0.8SM0.2O1.9 POWDERS OXIDIZED WITH H2O2 FOR LOW TEMPERATURE SOFCS APPLICATION

  • Tsinghua University
  • KTH Royal Institute of Technology

科研成果: 书/报告/会议事项章节会议稿件同行评审

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℃ 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℃, respectively.

源语言英语
主期刊名ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2005
出版商American Society of Mechanical Engineers (ASME)
295-298
页数4
ISBN(电子版)0791837645, 9780791837641
DOI
出版状态已出版 - 2005
已对外发布
活动ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2005 - Ypsilanti, 美国
期限: 23 5月 200525 5月 2005

出版系列

姓名ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2005

会议

会议ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2005
国家/地区美国
Ypsilanti
时期23/05/0525/05/05

联合国可持续发展目标

此成果有助于实现下列可持续发展目标:

  1. 可持续发展目标 7 - 经济适用的清洁能源
    可持续发展目标 7 经济适用的清洁能源

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