| KAg4I5-AgI复合体系的电导率研究 |
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| 引用本文： | 高韶华,王玉霞,王宏伟,袁帅. KAg4I5-AgI复合体系的电导率研究[J]. 物理学报, 2011, 60(8): 86601-086601. DOI: 10.7498/aps.60.086601 |
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| 作者姓名： | 高韶华 王玉霞 王宏伟 袁帅 |
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| 作者单位： | 中国科学技术大学材料科学与工程系,合肥 230026 |
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| 基金项目： | 国家自然科学基金(批准号:50672095)资助的课题. |
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| 摘 要： | 采用固相反应法将市购的AgI和KI按4.1 ∶1的摩尔组分配比,在避光干燥的条件下混合加热,制备出了KAg4I5 (10%AgI )复合体系.用X射线衍射谱、扫描电子显微镜、复阻抗谱、差示扫描量热等分析手段,对复合体系的结构、形貌、离子导电特性及相变温度进行了研究.结果发现,两相均为快离子导体的材料复合后,其复合体系的离子电导率比各自为纯相时都高,并且升降温-电导率曲线为迟滞回线,AgI的升降温相变温度分别滞后5和10 ℃.用界面间相互作用、空间电荷模型及Gou关键词：离子电导率电化学势空间电荷区相变温度
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| 关 键 词： | 离子电导率 电化学势 空间电荷区 相变温度 |
| 收稿时间： | 2010-07-28 |
Research on the conductivity of KAg4 I5-AgI composite |
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| Gao Shao-Hu,Wang Yu-Xi,Wang Hong-Wei and Yuan Shuai. Research on the conductivity of KAg4 I5-AgI composite[J]. Acta Physica Sinica, 2011, 60(8): 86601-086601. DOI: 10.7498/aps.60.086601 |
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| Authors: | Gao Shao-Hu Wang Yu-Xi Wang Hong-Wei Yuan Shuai |
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| Affiliation: | Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China;Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China;Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China;Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | KAg4I5(10%AgI) composite is prepared by the solid-state reaction method in the dark and dry conditions,and its structure,morphology,ion conductivity properties,and phase transition temperature are studied by X-ray diffraction,scanning electron microscope,impedance spectroscopy,differential scanning calorimetry and other analytical tools.The results show that when the two phases (AgI and KAg4I5 phases) in the composite are both fast ionic conductor phases,ionic conductivity of composite is higher than that o... |
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| Keywords: | ionic conductivity electrochemical potential space charge region phase transition temperature |
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