Gradient dielectric constant sandwich-structured BaTiO3/PMMA nanocomposites with strengthened energy density and ultralow-energy loss

Zhou, Yujiu; Liu, Qingxia; Chen, Fujia; Li, Xiali; Sun, Song; Guo, Jimin; Zhao, Yang; Yang, Yue; Xu, Jin

doi:10.1016/j.ceramint.2020.10.089

Cited by 33 publications

(16 citation statements)

References 47 publications

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“…Blending PMMA and PVDF (PMMA/PVDF, simplified as PAPF) could effectively improve U d and η of the nanocomposites. 37,40,41 Herein, low ε r BOC nanosheets and linear PMMA were filled into PVDF to prepare x vol % BOC/ PAPF nanocomposites, in which the 50 vol % PAPF (simplified as PAPF) blended polymer film was selected owing to its high polarization and E b . Both experimental and simulation results prove that dielectric mismatch is avoided in the x vol % BOC/PAPF nanocomposites due to the proper ε r of 2D BOC nanosheets, preventing nanocomposites from the concentration and distortion of local electric fields.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, BOC nanosheets have never been reported as a nanofiller in nanocomposites for dielectric energy storage applications. By the way, poly(vinylidene fluoride) (PVDF) delivers high U d but low charge–discharge efficiency (η) in comparison with linear organic polymer dielectric materials . Low η means that the stored energy could not be effectively discharged but accumulates in dielectric capacitors in the form of Joule heat, which results in a reduced energy storage characteristic and a shortened cycle life of dielectric capacitors. , Therefore, it remains an enormous challenge and imperious demand to simultaneously enhance the U d and η of polymer-based nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

“…Poly(methyl methacrylate) (PMMA) belongs to linear dielectrics, which has ultrahigh E b and ultralow dielectric loss. Blending PMMA and PVDF (PMMA/PVDF, simplified as PAPF) could effectively improve U d and η of the nanocomposites. ,, Herein, low ε r BOC nanosheets and linear PMMA were filled into PVDF to prepare x vol % BOC/PAPF nanocomposites, in which the 50 vol % PAPF (simplified as PAPF) blended polymer film was selected owing to its high polarization and E b . Both experimental and simulation results prove that dielectric mismatch is avoided in the x vol % BOC/PAPF nanocomposites due to the proper ε r of 2D BOC nanosheets, preventing nanocomposites from the concentration and distortion of local electric fields. , Moreover, BOC nanosheets with high aspect ratios could serve as an effective electron scattering center to enhance E b of the nanocomposites by extending the breakdown path. − Furthermore, the built-in electric field formed by the unique layered structure of BOC is beneficial in reducing leakage current and further increasing E b as well. , Surprisingly, the 1.0 vol % BOC/PAPF nanocomposite exhibits an excellent U d of 13.68 J/cm 3 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhancement of Energy Storage Performances in PMMA/PVDF Nanocomposites with Low Dielectric Bismuth Carbonate Nanosheets

Hao

Hou

et al. 2022

ACS Appl. Energy Mater.

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Both high discharge energy density (U d ) and charge−discharge efficiency (η) for nanocomposites are crucial to the development and application of modern electronic devices. However, the large dielectric contrast and ferroelectric phase greatly limit the improvement of U d and η of poly(vinylidene fluoride) (PVDF)-based nanocomposites. Herein, Bi 2 O 2 CO 3 (simplified as BOC) nanosheets with low dielectric constant and wide bandgaps and linear poly(methyl methacrylate) (PMMA) were filled into PVDF by solution casting to fabricate x vol % BOC/PAPF (PAPF is short for PMMA/PVDF) nanocomposites. The contributions of BOC nanosheets and linear PMMA, especially for the BOC nanosheet, have been systematically studied. Both experimental and simulation results show that BOC nanosheet and PMMA could improve the breakdown strength and reduce the dielectric loss and leakage current of nanocomposites simultaneously, realizing U d and η improvement at the same time. As a result, the 1.0 vol % BOC/PAPF nanocomposite shows the highest energy storage performance with U d = 13.68 J/cm 3 and η = 85.72%, which is much superior to PVDF. Therefore, this study might provide a proof-of-concept for constructing nanocomposites with excellent U d and η concurrently.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhancement of Energy Storage Performances in PMMA/PVDF Nanocomposites with Low Dielectric Bismuth Carbonate Nanosheets

Hao

Hou

et al. 2022

ACS Appl. Energy Mater.

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“…11 The most common approach to acquire high dielectric constant DE film is introducing high ε 0 ceramics into the matrix, such as BT, TiO 2 , and CCTO. For instance, Zhou 12 and coworkers constructed a sandwich nanostructure comprising BT and PVDF embedded into PMMA matrix. The results indicate that PMMA/BT-PVDF showed a higher ε r than that of PMMA.…”

Section: Introductionmentioning

confidence: 99%

Improving actuation strain and breakdown strength of natural rubber dielectric elastomers incorporated with AlN with silane grafting

Ruan

Guo

et al. 2022

Journal of Elastomers & Plastics

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In this study, dielectric elastomers offering intrinsically good integrated performances are achieved by introducing AlN particles grafted with γ-methacryloxypropyl trimethoxy silane (KH570). The C=C of KH570 participated in the vulcanization of NR, which could increase the dispersions and interfacial interactions. By incorporating 10 phr AlN-KH570 fillers, the dielectric and mechanical properties of the composite are increased compared with the pristine DEA, and the breakdown strength remains above 93.9 kV/mm. Correspondingly, the actuation strain of 10 phr AlN-KH570/NR composite is 7 times higher than that of pristine DEA under the same driving voltage. Consequently, the AlN particles developed here are promising candidates as dielectric in actuators, and their excellent electromechanical properties could be applied in future industrial applications of DEs.

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“…As a result, the energy density of multilayer films is higher than that of the single-layered films. For example, the PMMA−(PMMA/BT−PVDF)−PMMA sandwich-structured composites were designed by Zhou, 28 illustrating an ultrahigh E b of 418.2 MV/m and a high discharge energy density of 4.4 J cm −3 .…”

Section: Introductionmentioning

confidence: 99%

High Energy Storage of PLZT/PVDF Nanocomposites with a Trilayered Structure

Huang

Zhou

et al. 2021

J. Phys. Chem. C

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Designing a multilayer structure is an efficient strategy to synthesize dielectric nanocomposite films with excellent dielectric properties and energy density. In this study, lead lanthanum zirconate titanate (PLZT)/poly(vinylidene fluoride) (PVDF) films with good dielectric properties and boron nitride nanosheet (BNNS)/PVDF films with high breakdown strength were prepared using the casting method. Then, a trilayer-structured film with a PLZT/PVDF layer sandwiched between two BNNS/PVDF layers was fabricated using the hot-pressing method. The effect of PLZT fillers with different dimensions on the electrical properties of the trilayer nanocomposites has been investigated. The results show that (BNNS/PVDF)−(PLZT/PVDF)−(BNNS/PVDF) nanocomposite films containing PLZT nanowires have excellent dielectric properties and energy density, with a dielectric constant of 10.34, a breakdown strength of 429.03 MV/m, and the maximum energy storage density nearly 5 J/cm 3 , far more than those of the biaxially oriented polypropylenes.

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Gradient dielectric constant sandwich-structured BaTiO3/PMMA nanocomposites with strengthened energy density and ultralow-energy loss

Cited by 33 publications

References 47 publications

Enhancement of Energy Storage Performances in PMMA/PVDF Nanocomposites with Low Dielectric Bismuth Carbonate Nanosheets

Enhancement of Energy Storage Performances in PMMA/PVDF Nanocomposites with Low Dielectric Bismuth Carbonate Nanosheets

Improving actuation strain and breakdown strength of natural rubber dielectric elastomers incorporated with AlN with silane grafting

High Energy Storage of PLZT/PVDF Nanocomposites with a Trilayered Structure

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