Simultaneous enhancement of discharge energy density and efficiency in the PMMA and PVDF blend films via introducing the Ni(OH)2 nanosheets

Chen, Hui; Hou, Yafei; Wu, ZhiJie; Du, Peng; Luo, Laihui; Li, Weiping

doi:10.1016/j.jallcom.2021.158688

Cited by 22 publications

(8 citation statements)

References 44 publications

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“…Furthermore, Figure presents a comparison of U d and η of the recently reported representative organic–inorganic nanocomposites. ,,,,− In general, the practical application of the dielectric capacitors is required to have both high U d and η; that is, a satisfactory energy storage performance should move toward the diagonal in Figure . Compared with other research, the 1.0 vol % BOC/PAPF nanocomposite in this study simultaneously achieves a better U d of 13.68 J/cm 3 and η of 85.72% due to the following reasons.…”

Section: Resultsmentioning

confidence: 99%

“…First, the high E b and η and low leakage current density of PMMA help to increase the energy storage performance of the x vol % BOC/PAPF nanocomposites. Second, the contributions of low dielectric, high aspect ratio, and built-in electric field of BOC nanosheets make the E b of the 1.0 vol % BOC/PAPF nanocomposite (489.5 MV/m) much higher that of TiO 2 /PMMA/PVDF (387.0 MV/m) 59 and Ni(OH) 2 -PMMA/PVDF (445.4 MV/ m) 48 with a high ε r filler filling.…”

Section: Resultsmentioning

confidence: 99%

“…The y vol % PAPF blended films were fabricated on the basis of our previous reports . Then, various BOC nanosheets on a preset scale were uniformly added into 8 mL of DMF (containing 50 vol % PAPF) with 24 h of stirring.…”

Section: Methodsmentioning

confidence: 99%

“…The y vol % PAPF blended films were fabricated on the basis of our previous reports. 48 Then, various BOC nanosheets on a preset scale were uniformly added into 8 mL of DMF (containing 50 vol % PAPF) with 24 h of stirring. Then, the solution was cast on FTO by solution casting, followed by 12 h of drying in a 60 °C vacuum oven to remove superfluous DMF.…”

Section: Preparation Of Nanocompositesmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Preparation Of Nanocompositesmentioning

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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“…Combining organic matrix and inorganic or electric conductive fillers has been proved to be a simple and effective way to improve the energy storage performance of polymer composites. 6,7 In the recent past, several studies have been carried out on zero-dimensional (0D), one-dimensional (1D), and two-dimensional (2D) fillers. 8 Meanwhile, more and more groups are putting effort into the study of multi-dimensional-filler composites.…”

Section: Introductionmentioning

confidence: 99%

Multi-synergy effects-induced high electric breakdown field in polymer composites via 0D/2D design

Men

Wang

Jain

et al. 2022

High Performance Polymers

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Constructing polymer composites containing zero-dimensional (0D) nanoparticles and two-dimensional (2D) lamellae is a simple and effective strategy to obtain high energy storage performance. Although the hexagonal boron nitride nanosheets (BNNSs) are widely used in energy storage areas, the low yield hinders their application. This work employed Al2O3 (AO) nanoparticles and thick hexagonal boron nitride (h-BN) lamellae to fabricate poly (vinylidene fluoride) (PVDF)-based films. An expected synergy effect on the breakdown strength ( E b) is achieved as the filler content and ratio change. A high E b (450 MV/m), which is 110 MV/m higher than the pure PVDF (340 MV/m), was acquired with a small loading (4 wt.%). The analysis suggests multiple synergy effects between AO and h-BN on leakage current, crystallinity, melting point, and Young’s modulus contribute to the high E b. However, a desirable low leakage current is an indispensable part of these properties. In addition to this, the mechanisms behind these synergy effects were discussed. A comprehensive comparison indirectly proves that the AO particles can increase the dispersibility of h-BN lamellae. Besides, the dielectric behavior and energy storage performance were comprehensively examined.

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Largely Improved Breakdown Strength and Discharge Efficiency of Layer‐Structured Nanocomposites by Filling with a Small Loading Fraction of 2D Zirconium Phosphate Nanosheets

Liang

Shi

Tan

et al. 2021

Adv Materials Inter

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Dielectric film capacitors have aroused considerable attention on account of the fast development of pulsed power systems. However, enhanced energy density is always acquired at the cost of deteriorated charge/discharge efficiency. Herein, well balanced energy density and efficiency are achieved in a series of reasonably designed bilayer composites consisting of a ferroelectric layer and a paraelectric layer at the meantime. It is interesting to find that, when merely 1.6 wt% Zr(HPO4)2 nanosheets are introduced into the ferroelectric layer, a substantially improved energy density of 11.22 J cm−3, which is about 165% that of the bilayer composite without Zr(HPO4)2 nanosheets, is achieved at 650 kV mm−1. Meanwhile, a high charge/discharge efficiency of 89.8% and a low loss tangent of 0.024@10 kHz which is much lower than the pristine ferroelectric polymer layer (0.058@10 kHz) is maintained. Furthermore, finite element simulation reveals that the electric breakdown paths will develop along the macroscopical‐interfaces between adjoining layers and the microcosmic‐interfaces between the Zr(HPO4)2 nanosheets and polymer matrix, which can effectively increase the length of breakdown paths and contribute to improved breakdown strength. This work demonstrates that the Zr(HPO4)2 nanosheets can be promising fillers for other high‐performance dielectric composites.

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Simultaneous enhancement of discharge energy density and efficiency in the PMMA and PVDF blend films via introducing the Ni(OH)2 nanosheets

Cited by 22 publications

References 44 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

Multi-synergy effects-induced high electric breakdown field in polymer composites via 0D/2D design

Largely Improved Breakdown Strength and Discharge Efficiency of Layer‐Structured Nanocomposites by Filling with a Small Loading Fraction of 2D Zirconium Phosphate Nanosheets

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