| 不同碳酸铵试剂对共沉淀法制备的GDC粉性状的影响 |
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| 引用本文： | 谢朝晖,朱庆山,姚生永,黄文来.不同碳酸铵试剂对共沉淀法制备的GDC粉性状的影响[J].无机化学学报,2006,22(5):935-940. |
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| 作者姓名： | 谢朝晖 朱庆山 姚生永 黄文来 |
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| 作者单位： | 中国科学院过程工程研究所,北京,100080 |
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| 基金项目： | 高比容电子铝箔的研究开发与应用项目 |
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| 摘 要： | 近年来工作温度在500￣700℃的中温固体氧化物燃料电池(IT-SOFC)受到广泛关注。稀土掺杂氧化铈尤其是钐、钆掺杂氧化铈在中温下的离子电导率远高于钇掺杂氧化锆(YSZ),是较为理想的IT-SOFC电解质材料。由于掺杂氧化铈难于烧结,不便于制备致密的电解质膜,通过提高掺杂氧化铈粉体细度来降低其烧结温度,是近年来该材料应用领域的一个研究热点。已有各种合成掺杂氧化铈纳米粉的报道,如采用共沉淀法、固态反应法、水热处理法、燃烧法、溶胶-凝胶法等等。其中碳酸盐共沉淀法由于具有成本低、设备简单以及合成粉体细度高等优点而倍受青睐。通…
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| 关 键 词： | 钆掺杂氧化铈 碳酸铵 共沉淀 |
| 文章编号： | 1001-4861(2006)05-0935-06 |
| 收稿时间： | 2005-11-28 |
| 修稿时间： | 2006-02-13 |
Effects of the Forms of Ammonium Carbonate on Characteristics of GDC Nanopowders Synthesized via Coprecipitation Route |
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| XIE Zhao-Hui,ZHU Qing-Shan,YAO Sheng-Yong and HUANG Wen-Lai.Effects of the Forms of Ammonium Carbonate on Characteristics of GDC Nanopowders Synthesized via Coprecipitation Route[J].Chinese Journal of Inorganic Chemistry,2006,22(5):935-940. |
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| Authors: | XIE Zhao-Hui ZHU Qing-Shan YAO Sheng-Yong and HUANG Wen-Lai |
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| Institution: | Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080,Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080,Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080 and Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080 |
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| Abstract: | Coprecipitation with carbonates is an effective method for synthesis of the doped ceria nanopowder. This study compared the compositions and properties of the Gd2O3-doped CeO2 (GDC) nanopowders resulted by two ammonium carbonates, including a carbonate mixture from China and a pure carbonate reagent from abroad. It was found that the precursors from the two precipitants were same to each other in composition, with a formula (NH4)0.25CeGd0.25(CO3)2·2H2O. However, the GDC nanopowder resulted by the carbonate mixture had smaller particle sizes and thus better sinterability than that resulted by the pure ammonium carbonate reagent. |
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| Keywords: | gadolinium doped-ceria ammonium carbonate coprecipitation |
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