Simultaneously Improved Dielectric Constant and Breakdown Strength of PVDF-based Composites with Polypyrrole Nanowire Encapsuled Molybdenum Disulfide Nanosheets

Hua-Bin Luo; Xiao-Ren Pan; Jing-Hui Yang; Xiao-Dong Qi; Yong Wang

doi:10.1007/s10118-022-2693-5

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Simultaneously Improved Dielectric Constant and Breakdown Strength of PVDF-based Composites with Polypyrrole Nanowire Encapsuled Molybdenum Disulfide Nanosheets

RESEARCH ARTICLE | Updated：2022-04-26

- Simultaneously Improved Dielectric Constant and Breakdown Strength of PVDF-based Composites with Polypyrrole Nanowire Encapsuled Molybdenum Disulfide Nanosheets
- Simultaneously Improved Dielectric Constant and Breakdown Strength of PVDF-based Composites with Polypyrrole Nanowire Encapsuled Molybdenum Disulfide Nanosheets
- Chinese Journal of Polymer Science 2022年40卷第5期页码：515-525
- Affiliations：
  
  School of Materials Science & Engineering, Key Laboratory of Advanced Technology of Materials (Ministry of Education), Southwest Jiaotong University, Chengdu 610031, China
- Author bio：
  
  yangjinghui_84@163.com (J.H.Y.)
  yongwang1976@swjtu.edu.cn (Y.W.)
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (No. 51673159) and the Youth Science and Technology Innovation Team of Sichuan Province of Functional Polymer Composites (No. 2021JDTD0009). SEM characterizations were supported by the Analytical and Testing Center of Southwest Jiaotong University.
- DOI：10.1007/s10118-022-2693-5
  中图分类号：
- 收稿：2021-11-23，
  
  修回：2021-12-24，
  
  录用：2022-1-8，
  
  网络首发：2022-03-17，
  
  纸质出版：2022-05-01
- Accepted：
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Luo, H. B.; Pan, X. R.; Yang, J. H.; Qi, X. D.; Wang, Y. Simultaneously improved dielectric constant and breakdown strength of PVDF-based composites with polypyrrole nanowire encapsuled molybdenum disulfide nanosheets. Chinese J. Polym. Sci. 2022, 40, 515–525

Hua-Bin Luo, Xiao-Ren Pan, Jing-Hui Yang, et al. Simultaneously Improved Dielectric Constant and Breakdown Strength of PVDF-based Composites with Polypyrrole Nanowire Encapsuled Molybdenum Disulfide Nanosheets[J]. Chinese Journal of Polymer Science, 2022, 40(5): 515-525.
Luo, H. B.; Pan, X. R.; Yang, J. H.; Qi, X. D.; Wang, Y. Simultaneously improved dielectric constant and breakdown strength of PVDF-based composites with polypyrrole nanowire encapsuled molybdenum disulfide nanosheets. Chinese J. Polym. Sci. 2022, 40, 515–525 DOI： 10.1007/s10118-022-2693-5.

Hua-Bin Luo, Xiao-Ren Pan, Jing-Hui Yang, et al. Simultaneously Improved Dielectric Constant and Breakdown Strength of PVDF-based Composites with Polypyrrole Nanowire Encapsuled Molybdenum Disulfide Nanosheets[J]. Chinese Journal of Polymer Science, 2022, 40(5): 515-525. DOI： 10.1007/s10118-022-2693-5.

摘要

Novel hybrid fillers were fabricated by

in situ

synthesizing one-dimensional PPynws on the two-dimensional MoS

which integrated the good ion polarization ability of PPynws and the high insulation and adjustable band gap of MoS

. An optimal ternary composite with 1 wt% MoS

-PPynws showed a high dielectric constant (15@1 kHz)

suppressed dielectric loss (0.027@1 kHz)

and high breakdown strength (422.1 mV/m).

Abstract

High-performance dielectric polymer composites have received increasing attention due to their important applications in the field of energy storage. The rational structural design of hybrid fillers can lead to a balance between high dielectric constant and insulation in composites. In this work

novel hybrid fillers were fabricated by

in situ

synthesizing one-dimensional polypyrrole nanowires (PPynws) on the two-dimensional molybdenum disulfide (MoS

)

which integrated the good ion polarization ability of PPynws and the high insulation and adjustable band gap of MoS

. Compared with the binary poly(vinylidene fluoride) (PVDF)/MoS

composites

the PVDF/MoS

-PPynws composites exhibited remarkably improved dielectric constant and breakdown strength

while the dielectric loss was still maintained at a low level. An optimal ternary composite with 1 wt% MoS

-PPynws showed a high dielectric constant (15@1kHz)

suppressed dielectric loss (0.027@1kHz)

and high breakdown strength (422.1 MV/m). PPynws inducing strong interfacial polarization and the highly insulated MoS

nanosheets extending the breakdown path mainly contributed to the synchronously enhanced dielectric constant and breakdown strength. This intriguing synthesis method of PVDF/MoS

-PPynws nanocomposite will open up new opportunities for fabricating nanostructured polymer composites to produce high dielectric materials.

关键词

Keywords

references

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