| Significantly enhanced high permittivity and negative permittivity in Ag/ Al2O3/3D-BaTiO3/epoxy metacomposites with unique hierarchical heterogeneous microstructures | |
Han, Mingli1; Shi, Zhicheng1; Zhang, Wenqiang1; Zhang K(张坤)2 ; Wang, Huanlei1; Dastan, Davoud3; Fan, Runhua4
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| Corresponding Author | Shi, Zhicheng(zcshi@ouc.edu.cn) |
| Source Publication | COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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| 2021-10-01 | |
| Volume | 149Pages:9 |
| ISSN | 1359-835X |
| Abstract | High dielectric permittivity materials are widely employed in various electronic devices. To satisfy the ongoing miniaturization of electronic devices, materials with further enhanced dielectric permittivities are strongly desired. In this work, a novel design of epoxy composites based on Ag/Al2O3/3D-BaTiO3 foams with hierarchical heterogeneous microstructures are prepared. It is found that, the spatial distribution of the Ag particles can be easily controlled via adjusting the Ag+/Al3+ mole ratios, yielding highly tailorable dielectric properties. When the Ag+/Al3+ mole ratios are low, the Ag particles are well isolated by surrounding Al2O3, yielding the formation of numerous equivalent micro-capacitors and substantially enhanced dielectric permittivity. Moreover, the dielectric permittivities of the composites increase with higher Ag+/Al3+ mole ratios. Consequently, a high dielectric permittivity of 160 @10 kHz, which is about 35 times that of the epoxy matrix, is achieved in the composite with a Ag+/Al3+ mole ratio of 1.8. Meanwhile, a low tangent of about 0.062 is maintained. As the Ag+/Al3+ mole ratio increases, the Ag particles become interconnected, forming Ag networks. Consequently, a plasma-like negative phenomenon which should be attributed to the plasma oscillation of free electrons in the percolative Ag networks, is observed. This work offers an effective route to design polymer composites with tailorable high permittivity and negative permittivity. |
| Keyword | Multifunctional composites Polymer-matrix composites (PMCs) Electrical properties Interface |
| DOI | 10.1016/j.compositesa.2021.106559 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000689363600004 |
| WOS Keyword | ENERGY-STORAGE DENSITY ; HIGH DIELECTRIC-CONSTANT ; REDUCED GRAPHENE OXIDE ; HIGH-K ; NANOCOMPOSITE ; COMPOSITES |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Manufacturing ; Materials Science, Composites |
| Funding Project | Na-tional Natural Science Foundation of China[51773187] ; Funda-mental Research Funds for the Central Universities[201961060] |
| Funding Organization | Na-tional Natural Science Foundation of China ; Funda-mental Research Funds for the Central Universities |
| Classification | 一类 |
| Ranking | 3+ |
| Contributor | Shi, Zhicheng |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/87360 |
| Collection | 微重力重点实验室 |
| Affiliation | 1.Ocean Univ China, Sch Mat Sci & Engn, Qingdao 266100, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Key Lab Micrograv, Beijing 100190, Peoples R China; 3.Georgia Inst Technol, Dept Mat Sci & Engn, Atlanta, GA 30332 USA; 4.Shanghai Maritime Univ, Inst Marine Mat Sci & Engn, Shanghai 201306, Peoples R China |
| Recommended Citation GB/T 7714 | Han, Mingli,Shi, Zhicheng,Zhang, Wenqiang,et al. Significantly enhanced high permittivity and negative permittivity in Ag/ Al2O3/3D-BaTiO3/epoxy metacomposites with unique hierarchical heterogeneous microstructures[J]. COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING,2021,149:9. |
| APA | Han, Mingli.,Shi, Zhicheng.,Zhang, Wenqiang.,张坤.,Wang, Huanlei.,...&Fan, Runhua.(2021).Significantly enhanced high permittivity and negative permittivity in Ag/ Al2O3/3D-BaTiO3/epoxy metacomposites with unique hierarchical heterogeneous microstructures.COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING,149,9. |
| MLA | Han, Mingli,et al."Significantly enhanced high permittivity and negative permittivity in Ag/ Al2O3/3D-BaTiO3/epoxy metacomposites with unique hierarchical heterogeneous microstructures".COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING 149(2021):9. |
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| Jp2021F430.pdf（7741KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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