Journal
POLYMERS
Volume 12, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/polym12091972
Keywords
sandwich structure; energy storage efficiency; PMMA; P(VDF-TrFE-CFE)
Categories
Funding
- National Natural Science Foundation of Heilongjiang Province of China
- Fundamental Research Foundation for Universities of Heilongjiang Province [LGYC2018TD001]
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Improving the energy storage density of dielectrics without sacrificing charge-discharge energy storage efficiency and reliability is crucial to the performance improvement of modern electrical and electronic systems, but traditional methods of doping high-dielectric ceramics cannot achieve high energy storage densities without sacrificing reliability and storage efficiency. Here, an all-organic energy storage dielectric composed of ferroelectric and linear polymer with a sandwich structure is proposed and successfully prepared by the electrostatic spinning method. Additionally, the effect of the ferroelectric/linear volume ratio on the dielectric properties, breakdown, and energy storage is systematically studied. The results show that the structure has good energy storage characteristics with a high energy storage density (9.7 J/cm(3)) and a high energy storage efficiency (78%). In addition, the energy storage density of the composite dielectric under high energy storage efficiency (90%) is effectively improved (25%). This result provides theoretical analysis and experience for the preparation of multilayer energy storage dielectrics which will promote the development and application of energy storage dielectrics.
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