| Greatly enhanced dielectric charge storage capabilities of layered polymer composites incorporated with low loading fractions of ultrathin amorphous iron phosphate nanosheets | |
Zhang, Meiyu1; Shi, Zhicheng1; Zhang, Jifu1; Zhang K(张坤)2 ; Lei, Li1; Dastan, Davoud3; Dong, Bohua1
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| Corresponding Author | Shi, Zhicheng([email protected]) ; Dong, Bohua([email protected]) |
| Source Publication | JOURNAL OF MATERIALS CHEMISTRY C
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| 2021-07-06 | |
| Pages | 11 |
| ISSN | 2050-7526 |
| Abstract | Two-dimensional nanomaterials are promising fillers for dielectric nanocomposites because of their high specific surface areas which can induce strong interfacial polarization and result in improved dielectric permittivity. In this work, ultrathin amorphous FePO4 nanosheets with a thickness of about 3.7 nm are successfully obtained using a one-step solvothermal method and are further dispersed into a P(VDF-HFP) matrix, forming FePO4/P(VDF-HFP) nanocomposites. Obviously enhanced dielectric permittivities are achieved owing to the strong interfacial polarization at the huge interfaces between the FePO4 nanosheets and the P(VDF-HFP) matrix. A greatly enhanced dielectric permittivity of 18.5@10 kHz, which is about 240% that of the P(VDF-HFP) matrix, is obtained in the composite with merely 2 wt% FePO4 nanosheets. Furthermore, bilayer paraelectric/ferroelectric composites, in which pure polyetherimide acts as the paraelectric layer and the FePO4/P(VDF-HFP) composite as the ferroelectric layer, are fabricated. It is found that, the synergistic effect between the two layers results in a substantially suppressed loss and elevated breakdown strengths, as well as obviously improved energy density and discharge efficiency in comparison with the single layer FePO4/P(VDF-HFP) composites. Consequently, a high energy density of 7.58 J cm(-3) and a high discharge efficiency of 81.6% are concurrently achieved in the bilayer composite with merely 0.5 wt% FePO4 nanosheets. The excellent dielectric energy storage performances make these composites promising candidates for advanced electrostatic capacitors. |
| DOI | 10.1039/d1tc01974k |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000678173500001 |
| WOS Keyword | HIGH-ENERGY-DENSITY ; ULTRAHIGH DISCHARGE EFFICIENCY ; BREAKDOWN STRENGTH ; NANOCOMPOSITES ; POLYETHERIMIDE ; PERMITTIVITY ; POLARIZATION ; FABRICATION ; CONSTANT ; PROPERTY |
| WOS Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Physics, Applied |
| Funding Project | National Natural Science Foundation of China[51773187] ; Fundamental Research Funds for the Central Universities[201961060] |
| Funding Organization | National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities |
| Classification | 二类/Q1 |
| Ranking | 3+ |
| Contributor | Shi, Zhicheng ; Dong, Bohua |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/87153 |
| 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 |
| Recommended Citation GB/T 7714 | Zhang, Meiyu,Shi, Zhicheng,Zhang, Jifu,et al. Greatly enhanced dielectric charge storage capabilities of layered polymer composites incorporated with low loading fractions of ultrathin amorphous iron phosphate nanosheets[J]. JOURNAL OF MATERIALS CHEMISTRY C,2021:11.Rp_Au:Shi, Zhicheng, Dong, Bohua |
| APA | Zhang, Meiyu.,Shi, Zhicheng.,Zhang, Jifu.,张坤.,Lei, Li.,...&Dong, Bohua.(2021).Greatly enhanced dielectric charge storage capabilities of layered polymer composites incorporated with low loading fractions of ultrathin amorphous iron phosphate nanosheets.JOURNAL OF MATERIALS CHEMISTRY C,11. |
| MLA | Zhang, Meiyu,et al."Greatly enhanced dielectric charge storage capabilities of layered polymer composites incorporated with low loading fractions of ultrathin amorphous iron phosphate nanosheets".JOURNAL OF MATERIALS CHEMISTRY C (2021):11. |
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| Jp2021F350.pdf（5982KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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