Synthesis of novel core-shell nanocomposites for fabricating high breakdown ZnO varistors
文献类型：期刊论文
| 作者 | Meng L(孟磊) ; Zheng LY(郑嘹赢) ; Cheng LH(程丽红) ; Li GR(李国荣) ; Huang LZ(黄立柱) ; 谷彦99 ; 张福平99 |
| 刊名 | Journal of Materials Chemistry
 |
| 出版日期 | 2011-05-23 |
| 卷号 | 21期号:30页码:11418-11423 |
| ISSN号 | 0959-9428 |
| 其他题名 | Synthesis of novel core-shell nanocomposites for fabricating high breakdown ZnO varistors |
| 通讯作者 | 郑嘹赢 |
| 中文摘要 | A novel varistor-composite synthesis for the fabrication of high breakdown voltage ZnO varistors has been successfully developed. It involves coating ZnO nanoparticles with SiO2 through the hydrolysis of tetraethyl orthosilicate(TEOS) and the subsequent coating of additives on the core of the SiO2-coated ZnO particles, producing a double core-shell structure. The effect of the amount of TEOS used on the morphology of the synthesized composites and the microstructure, as well as the electrical property of the sintered samples from the double core-shell composites are fully studied. Such materials, with the appropriate amount of TEOS added (Si4+/Zn2+ ？ 0.15 moles) enables the superior electrical performance of ZnO varistors: high breakdown voltage (VB ？ 1123 V mm 1), excellent nonlinear coefficient (a ？ 42.5) and low leakage current (IL ？ 8.5 mA), compared with current commercial varistors and the sample from single core-shell composites. The high performance is attributed to the smaller ZnO grain size and perfect additive homogeneity. The SiO2-coating provides a better way to control the varistor microstructure through the formation of a nearly circular distribution of blocky Zn2SiO4 around the ZnO grains. |
| 学科主题 | 无机非金属材料 |
| 收录类别 | SCI收录 ; EI收录 |
| 语种 | 英语 |
| 公开日期 | 2012-07-05 |
| 源URL | [http://ir.sic.ac.cn/handle/331005/1264]  |
| 专题 | 上海硅酸盐研究所_无机功能材料与器件重点实验室_期刊论文 |
| 推荐引用方式 GB/T 7714 | Meng L,Zheng LY,Cheng LH,et al. Synthesis of novel core-shell nanocomposites for fabricating high breakdown ZnO varistors[J]. Journal of Materials Chemistry,2011,21(30):11418-11423. |
| APA | 孟磊.,郑嘹赢.,程丽红.,李国荣.,黄立柱.,...&张福平99.(2011).Synthesis of novel core-shell nanocomposites for fabricating high breakdown ZnO varistors.Journal of Materials Chemistry,21(30),11418-11423. |
| MLA | 孟磊,et al."Synthesis of novel core-shell nanocomposites for fabricating high breakdown ZnO varistors".Journal of Materials Chemistry 21.30(2011):11418-11423. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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