Optimizing the dielectric energy storage performance in P(VDF-HFP) nanocomposite by modulating the diameter of PZT nanofibers prepared via electrospinning

Zhang, Yangyang; Liu, Xiaoru; Yu, Jinyao; Fan, Mingzhi; Ji, Xumin; Sun, Binzhou; Hu, Penghao

doi:10.1016/j.compscitech.2019.107838

Cited by 41 publications

(13 citation statements)

References 41 publications

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“…For comparison, the U e and η of recently reported representative polymer-based composites are displayed in Figure . ,,,,,,− Generally speaking, the practical applications of dielectric capacitors demand the combination of a superior U e and high η, which is supposed to be located along the diagonal direction in Figure . By constructing the bilayer composites and optimizing the BT np fraction in the x BT/P(VDF-HFP) layer, the THV/5BT composite exhibits a superior energy storage performance with a U e of 22.7 J/cm 3 and η of 79.0% due to the improved interfacial polarization (both organic/inorganic and organic/organic interfaces) and improved E b and limited leakage current.…”

Section: Resultsmentioning

confidence: 99%

Significant Enhancement of Energy Storage Performances by Regulating the Dielectric Contrast between Adjacent Layers in the Heterostructural Composites

Liu

Hou

Qian

et al. 2020

ACS Appl. Energy Mater.

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Polymer-based composites with high discharged energy density and energy efficiency are tremendously desired for modern electronic systems. In this study, a bilayer heterostructural composite (named as THV/xBT) with excellent energy storage performances was constructed by one layer of a BaTiO 3 nanoparticles (BT nps)-filled P(VDF-HFP) composite and another layer of a pure poly(tetrafluoroethylene-vinylidene fluoride-hexafluoropropylene) (THV) polymer with a moderate dielectric constant and high breakdown strength. The experimental and finite element simulation results indicate that the space charges could accumulate at the interfaces between THV/P(VDF-HFP) and BT nps/P(VDF-HFP) by regulating the dielectric contrast between these two adjacent layers. It improves not only the interfacial polarization but also the breakdown strength and limits the leakage current density of THV/xBT composites. As a result, the THV/5BT composite delivers the best energy storage performance with the discharged energy density of 22.7 J/cm 3 , and an energy efficiency of 79.0% is achieved. This work might open up a way for structural design of polymer-based composites with remarkable energy storage performances.

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Section: Resultsmentioning

confidence: 99%

Significant Enhancement of Energy Storage Performances by Regulating the Dielectric Contrast between Adjacent Layers in the Heterostructural Composites

Liu

Hou

Qian

et al. 2020

ACS Appl. Energy Mater.

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“…Over the years, numerous high-ε r ceramic nanofillers, such as titanium oxide, barium titanate, − zirconate titanate, and sodium bismuth titanate, have been chosen to mingle with the ferroelectric polymer matrix to prepare polymer hybrids in order to obtain high energy storage. Although the high-ε r ceramic fillers contribute to the enhanced ε r and U d of composites, they may also result in dramatically deteriorated mechanical property, elevated conduction loss, and suppressed discharge efficiency (η).…”

Section: Introductionmentioning

confidence: 99%

Achieving Concurrent High Energy Density and Efficiency in All-Polymer Layered Paraelectric/Ferroelectric Composites via Introducing a Moderate Layer

Sun

Shi

Sun

et al. 2021

ACS Appl. Mater. Interfaces

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Dielectric polymer capacitors are extensively applied in advanced electronics by virtue of their extremely high power density. However, it remains a challenge to concurrently realize high energy density and high discharge efficiency. In order to solve this conundrum, we herein design a novel all-polymer trilayer structure, where the paraelectric poly(methyl methacrylate) (PMMA) is used as the top layer to obtain a high discharge efficiency, and ferroelectric P(VDF-HFP) is employed as the bottom layer to obtain a high energy density. Particularly, the PMMA/poly(vinylidene fluoride-hexafluoropropylene) (P(VDF-HFP)) blend composite is used as the middle layer to homogenize the electric field inside the trilayer composites, turning out an obviously boosted breakdown strength and elevated energy density. Consequently, an efficiency as high as 85% and an energy density up to 7.5 J/cm3 along with excellent cycling stability are simultaneously realized at an ultrahigh electric field of 490 kV/mm. These attractive characteristics of the all-polymer trilayer structure suggest that the feasible pathway presented herein is significant to realize concurrently a high energy density and discharge efficiency.

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“…The energy-storage performances of the F–AO/F–M trilayer composites are further compared with other recently reported polymeric dielectric composites. ,,− As illustrated in Figure , for most of the studies, it is hard to achieve concurrent high U d and high η. Specifically, high U d are usually obtained in composites containing a large fraction of ferroelectric or conductive components, but the high conduction loss and polarization loss lead to low η.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous Realization of Significantly Enhanced Breakdown Strength and Moderately Enhanced Permittivity in Layered PMMA/P(VDF–HFP) Nanocomposites via Inserting an Al₂O₃/P(VDF–HFP) Layer

et al. 2021

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Paraelectric/ferroelectric bilayer composites are promising candidates for high-performance dielectric capacitors. However, the energy densities of these composites need to be further improved to satisfy the miniaturization of electronic devices. Herein, an Al2O3/P(VDF–HFP) buffer layer is inserted between a paraelectric PMMA layer and a ferroelectric P(VDF–HFP) layer, forming a novel trilayer structure. It is interesting to find that the buffer layer effectively alleviates the huge electric field gap between the P(VDF–HFP) layer and PMMA layer, yielding substantially improved breakdown strengths (>600 kV/mm), which are over 140% that of the bilayer P(VDF–HFP)/PMMA composite (∼425 kV/mm). In addition, the introduction of the buffer layer also results in improved interfacial polarization, hence, the moderately elevated permittivity. Consequently, a high energy density of 10.03 J/cm3, which is about 260% that of the bilayer P(VDF–HFP)/PMMA composite (∼3.9 J/cm3), is achieved at 600 kV/mm. This work offers a facile strategy to achieve dielectric composites with high breakdown strengths, which is illuminating for the design of high-voltage energy-storage capacitors.

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Optimizing the dielectric energy storage performance in P(VDF-HFP) nanocomposite by modulating the diameter of PZT nanofibers prepared via electrospinning

Cited by 41 publications

References 41 publications

Significant Enhancement of Energy Storage Performances by Regulating the Dielectric Contrast between Adjacent Layers in the Heterostructural Composites

Significant Enhancement of Energy Storage Performances by Regulating the Dielectric Contrast between Adjacent Layers in the Heterostructural Composites

Achieving Concurrent High Energy Density and Efficiency in All-Polymer Layered Paraelectric/Ferroelectric Composites via Introducing a Moderate Layer

Simultaneous Realization of Significantly Enhanced Breakdown Strength and Moderately Enhanced Permittivity in Layered PMMA/P(VDF–HFP) Nanocomposites via Inserting an Al₂O₃/P(VDF–HFP) Layer

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Optimizing the dielectric energy storage performance in P(VDF-HFP) nanocomposite by modulating the diameter of PZT nanofibers prepared via electrospinning

Cited by 41 publications

References 41 publications

Significant Enhancement of Energy Storage Performances by Regulating the Dielectric Contrast between Adjacent Layers in the Heterostructural Composites

Significant Enhancement of Energy Storage Performances by Regulating the Dielectric Contrast between Adjacent Layers in the Heterostructural Composites

Achieving Concurrent High Energy Density and Efficiency in All-Polymer Layered Paraelectric/Ferroelectric Composites via Introducing a Moderate Layer

Simultaneous Realization of Significantly Enhanced Breakdown Strength and Moderately Enhanced Permittivity in Layered PMMA/P(VDF–HFP) Nanocomposites via Inserting an Al2O3/P(VDF–HFP) Layer

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Simultaneous Realization of Significantly Enhanced Breakdown Strength and Moderately Enhanced Permittivity in Layered PMMA/P(VDF–HFP) Nanocomposites via Inserting an Al₂O₃/P(VDF–HFP) Layer