Enhanced ionic conductivity of AgI nanowires/AAO composites fabricated by a simple approach
文献类型：期刊论文
| 作者 | Liu, LF ; Lee, SW ; Li, JB ; Alexe, M ; Rao, GH ; Zhou, WY ; Lee, JJ ; Lee, W ; Gosele, U |
| 刊名 | NANOTECHNOLOGY
 |
| 出版日期 | 2008 |
| 卷号 | 19期号:49 |
| 关键词 | SILVER-IODIDE AGI-AL2O3 PHASE POLYTYPE ALUMINA ARRAYS ROUTE |
| ISSN号 | 0957-4484 |
| 通讯作者 | Liu, LF: Max Planck Inst Microstruct Phys, Weinberg 2, D-06120 Halle, Germany. |
| 中文摘要 | AgI nanowires/anodic aluminum oxide ( AgI NWs/AAO) composites have been fabricated by a simple approach, which involves the thermal melting of AgI powders on the surface of the AAO membrane, followed by the infiltration of the molten AgI inside the nanochannels. As-prepared AgI nanowires have corrugated outer surfaces and are polycrystalline according to scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations. X-ray diffraction (XRD) shows that a considerable amount of 7H polytype AgI exists in the composites, which is supposed to arise from the interfacial interactions between the embedded AgI and the alumina. AC conductivity measurements for the AgI nanowires/AAO composites exhibit a notable conductivity enhancement by three orders of magnitude at room temperature compared with that of pristine bulk AgI. Furthermore, a large conductivity hysteresis and abnormal conductivity transitions were observed in the temperature-dependent conductivity measurements, from which an ionic conductivity as high as 8.0 x 10(2) Omega(-1) cm(-1) was obtained at around 70 degrees C upon cooling. The differential scanning calorimetry (DSC) result demonstrates a similar phase transition behavior as that found in the AC conductivity measurements. The enhanced ionic conductivity, as well as the abnormal phase transitions, can be explained in terms of the existence of the highly conducting 7H polytype AgI and the formation of well-defined conduction paths in the composites. |
| 收录类别 | SCI |
| 资助信息 | Korea Research Foundation Grant funded by the Korean Government (MOEHRD) [KRF-2007-612-D00103] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37358]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu, LF,Lee, SW,Li, JB,et al. Enhanced ionic conductivity of AgI nanowires/AAO composites fabricated by a simple approach[J]. NANOTECHNOLOGY,2008,19(49). |
| APA | Liu, LF.,Lee, SW.,Li, JB.,Alexe, M.,Rao, GH.,...&Gosele, U.(2008).Enhanced ionic conductivity of AgI nanowires/AAO composites fabricated by a simple approach.NANOTECHNOLOGY,19(49). |
| MLA | Liu, LF,et al."Enhanced ionic conductivity of AgI nanowires/AAO composites fabricated by a simple approach".NANOTECHNOLOGY 19.49(2008). |
入库方式： OAI收割
来源：物理研究所
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