Abstract
AbstractUnderstanding the dielectric breakdown behavior of polymer nanocomposites is crucial to the design of high‐energy‐density dielectric materials with reliable performances. It is however challenging to predict the breakdown behavior due to the complicated factors involved in this highly nonequilibrium process. In this work, a comprehensive phase‐field model is developed to investigate the breakdown behavior of polymer nanocomposites under electrostatic stimuli. It is found that the breakdown strength and path significantly depend on the microstructure of the nanocomposite. The predicted breakdown strengths for polymer nanocomposites with specific microstructures agree with existing experimental measurements. Using this phase‐field model, a high throughput calculation is performed to seek the optimal microstructure. Based on the high‐throughput calculation, a sandwich microstructure for PVDF–BaTiO3 nanocomposite is designed, where the upper and lower layers are filled with parallel nanosheets and the middle layer is filled with vertical nanofibers. It has an enhanced energy density of 2.44 times that of the pure PVDF polymer. The present work provides a computational approach for understanding the electrostatic breakdown, and it is expected to stimulate future experimental efforts on synthesizing polymer nanocomposites with novel microstructures to achieve high performances.
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Dates
Type | When |
---|---|
Created | 7 years, 9 months ago (Nov. 22, 2017, 2:42 a.m.) |
Deposited | 1 year, 11 months ago (Sept. 15, 2023, 10:19 p.m.) |
Indexed | 6 days, 7 hours ago (Aug. 23, 2025, 9:19 p.m.) |
Issued | 7 years, 9 months ago (Nov. 22, 2017) |
Published | 7 years, 9 months ago (Nov. 22, 2017) |
Published Online | 7 years, 9 months ago (Nov. 22, 2017) |
Published Print | 7 years, 7 months ago (Jan. 1, 2018) |
Funders
2
National Natural Science Foundation of China
10.13039/501100001809
Region: Asia
gov (National government)
Labels
11
- Chinese National Science Foundation
- Natural Science Foundation of China
- National Science Foundation of China
- NNSF of China
- NSF of China
- 国家自然科学基金委员会
- National Nature Science Foundation of China
- Guójiā Zìrán Kēxué Jījīn Wěiyuánhuì
- NSFC
- NNSF
- NNSFC
Awards
3
- 51532003
- 51625202
- 51572141
Air Force Office of Scientific Research
10.13039/100000181
Region: Americas
gov (National government)
Labels
4
- AF Office of Scientific Research
- US Air Force Office of Scientific Research
- United States Air Force Office of Scientific Research
- AFOSR
@article{Shen_2017, title={High‐Throughput Phase‐Field Design of High‐Energy‐Density Polymer Nanocomposites}, volume={30}, ISSN={1521-4095}, url={http://dx.doi.org/10.1002/adma.201704380}, DOI={10.1002/adma.201704380}, number={2}, journal={Advanced Materials}, publisher={Wiley}, author={Shen, Zhong‐Hui and Wang, Jian‐Jun and Lin, Yuanhua and Nan, Ce‐Wen and Chen, Long‐Qing and Shen, Yang}, year={2017}, month=nov }