Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania Nanosheets
With the rapid development of modern electrical and electronic applications, the demand for high-performance film capacitors is becoming increasingly urgent. The energy density of a capacitor is dependent on permittivity and breakdown strength. However, the development of polymer-based composites wi...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/13/4370 |
| _version_ | 1797434182265208832 |
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| author | Congcong Zhu Jinghua Yin Yu Feng Jialong Li Yanpeng Li He Zhao Dong Yue Xiaoxu Liu |
| author_facet | Congcong Zhu Jinghua Yin Yu Feng Jialong Li Yanpeng Li He Zhao Dong Yue Xiaoxu Liu |
| author_sort | Congcong Zhu |
| collection | DOAJ |
| description | With the rapid development of modern electrical and electronic applications, the demand for high-performance film capacitors is becoming increasingly urgent. The energy density of a capacitor is dependent on permittivity and breakdown strength. However, the development of polymer-based composites with both high permittivity (<i>ε</i><sub>r</sub>) and breakdown strength (<i>E</i><sub>b</sub>) remains a huge challenge. In this work, a strategy of doping synergistic dual-fillers with complementary functionalities into polymer is demonstrated, by which high <i>ε</i><sub>r</sub> and <i>E</i><sub>b</sub> are obtained simultaneously. Small-sized titania nanosheets (STNSs) with high <i>ε</i><sub>r</sub> and high-insulating boron nitride sheets coated with polydopamine on the surface (BN@PDA) were introduced into poly(vinylidene fluoride) (PVDF) to prepare a ternary composite. Remarkably, a PVDF-based composite with 1 wt% BN@PDA and 0.5 wt% STNSs (1 wt% PVDF/BN@PDA−STNSs) shows an excellent energy storage performance, including a high <i>ε</i><sub>r</sub> of ~13.9 at 1 Hz, a superior <i>E</i><sub>b</sub> of ~440 kV/mm, and a high discharged energy density <i>U</i><sub>e</sub> of ~12.1 J/cm<sup>3</sup>. Moreover, the simulation results confirm that BN@PDA sheets improve breakdown strength and STNSs boost polarization, which is consistent with the experimental results. This contribution provides a new design paradigm for energy storage dielectrics. |
| first_indexed | 2024-03-09T10:27:35Z |
| format | Article |
| id | doaj.art-d0bce9976a1d4711b174d71e9789167e |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T10:27:35Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-d0bce9976a1d4711b174d71e9789167e2023-12-01T21:33:40ZengMDPI AGMaterials1996-19442022-06-011513437010.3390/ma15134370Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania NanosheetsCongcong Zhu0Jinghua Yin1Yu Feng2Jialong Li3Yanpeng Li4He Zhao5Dong Yue6Xiaoxu Liu7School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaKey Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaKey Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaWith the rapid development of modern electrical and electronic applications, the demand for high-performance film capacitors is becoming increasingly urgent. The energy density of a capacitor is dependent on permittivity and breakdown strength. However, the development of polymer-based composites with both high permittivity (<i>ε</i><sub>r</sub>) and breakdown strength (<i>E</i><sub>b</sub>) remains a huge challenge. In this work, a strategy of doping synergistic dual-fillers with complementary functionalities into polymer is demonstrated, by which high <i>ε</i><sub>r</sub> and <i>E</i><sub>b</sub> are obtained simultaneously. Small-sized titania nanosheets (STNSs) with high <i>ε</i><sub>r</sub> and high-insulating boron nitride sheets coated with polydopamine on the surface (BN@PDA) were introduced into poly(vinylidene fluoride) (PVDF) to prepare a ternary composite. Remarkably, a PVDF-based composite with 1 wt% BN@PDA and 0.5 wt% STNSs (1 wt% PVDF/BN@PDA−STNSs) shows an excellent energy storage performance, including a high <i>ε</i><sub>r</sub> of ~13.9 at 1 Hz, a superior <i>E</i><sub>b</sub> of ~440 kV/mm, and a high discharged energy density <i>U</i><sub>e</sub> of ~12.1 J/cm<sup>3</sup>. Moreover, the simulation results confirm that BN@PDA sheets improve breakdown strength and STNSs boost polarization, which is consistent with the experimental results. This contribution provides a new design paradigm for energy storage dielectrics.https://www.mdpi.com/1996-1944/15/13/4370BN@PDA−STNSsPVDF-based compositespermittivitybreakdown strengthenergy density |
| spellingShingle | Congcong Zhu Jinghua Yin Yu Feng Jialong Li Yanpeng Li He Zhao Dong Yue Xiaoxu Liu Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania Nanosheets Materials BN@PDA−STNSs PVDF-based composites permittivity breakdown strength energy density |
| title | Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania Nanosheets |
| title_full | Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania Nanosheets |
| title_fullStr | Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania Nanosheets |
| title_full_unstemmed | Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania Nanosheets |
| title_short | Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania Nanosheets |
| title_sort | enhanced energy storage performance of pvdf based composites using bn pda sheets and titania nanosheets |
| topic | BN@PDA−STNSs PVDF-based composites permittivity breakdown strength energy density |
| url | https://www.mdpi.com/1996-1944/15/13/4370 |
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