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| 掺杂MoO_3对Ce_(0.8)Nd_(0.2)O_(1.9)固体电解质结构与电性能的影响 | |
| 引用本文： | 周德凤,朱建新,夏燕杰,赵桂春,孟 健. 掺杂MoO_3对Ce_(0.8)Nd_(0.2)O_(1.9)固体电解质结构与电性能的影响[J]. 无机化学学报, 2010, 26(1): 91-95 |
| 作者姓名： | 周德凤 朱建新 夏燕杰 赵桂春 孟 健 |
| 作者单位： | 1. 长春工业大学化学与生命科学学院,长春,130012 2. 长春工业大学化学与生命科学学院,长春,130012;中国科学院长春应用化学研究所,长春,130022 3. 中国科学院长春应用化学研究所,长春,130022 |
| 基金项目： | 国家自然科学基金，吉林省科技发展计划项目 |
| 摘 要： | 采用溶胶凝胶方法将过渡金属氧化物MoO3加入到Ce0.8Nd0.2O1.9体系中,讨论MoO3的掺杂对微观结构及电性能的影响。通过X-射线衍射(XRD)、场发射扫描电镜(FE-SEM)等手段对氧化物进行结构表征,交流阻抗谱测试电性能。结果表明:烧结过程中MoO3在晶粒边缘形成液相,增加了晶粒间浸润性,晶粒间位置重排并接触,晶界滑移加快,促使材料致密化,晶界体积分数降低;总电导率和晶界电导率因晶界电阻减少而提高。600℃时,NDC的σt和σgb分别为6.42×10-3和2.03×10-2S·cm-1,加入MoO3后材料的σt提高约1.5倍,σgb提高约4倍。MoO3是NDC体系理想的烧结助剂。 |
| 关 键 词： | 固体电解质； 掺钕氧化铈； 晶界电导率； 烧结助剂 |
Effects of MoO3-Dopant on the Microstructure and Electrical Conductivity of Ce0.8Nd0.2O1.9 |
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| ZHOU De-Feng,ZHU Jian-Xin,XIA Yan-Jie,ZHAO Gui-Chun and MENG Jian. Effects of MoO3-Dopant on the Microstructure and Electrical Conductivity of Ce0.8Nd0.2O1.9[J]. Chinese Journal of Inorganic Chemistry, 2010, 26(1): 91-95 | |
| Authors: | ZHOU De-Feng ZHU Jian-Xin XIA Yan-Jie ZHAO Gui-Chun MENG Jian |
| Affiliation: | School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012,School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012,School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012; Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022,School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012 and Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 |
| Abstract: | The Ce0.8Nd0.2O1.9and doped with MoO3 were prepared through modified sol-gel method. It is systematically discussed that the effects of MoO3 doping on the structures and conductivity. The structures of the samples were characterized by means of X-ray diffraction (XRD), and field-emission scanning electron microscopy (FESEM). The ionic conductivity was systematically studied in air using an AC impedance spectroscopy. The results showed that the MoO3 can form a thin amorphous film around particles, which redu... |
| Keywords: | solid electrolytes neodymium-doped ceria grain boundary conductivity sintering aids |
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