High energy density of polyimide composites containing one-dimensional BaTiO3@ZrO2 nanofibers for energy storage device

Wang, Junchuan; Sun, Ying; Wang, Pengna; Yu, Xiaochen; Shi, Hongbing; Zhang, Xueqin; Yang, Hong; Lin, Bo

doi:10.1016/j.jallcom.2019.03.142

Cited by 38 publications

(18 citation statements)

References 47 publications

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“…The above results indicate that UiO‐66/PI composites can enhance E b through highly efficient 3D interface effect. Here, to demonstrate the scientific and advanced nature of the strategy of MOFs doping to form highly efficient interface effects to enhance E b , we compared E b of PI‐matrix composites with different dimensional filler doping 34–46 . These studies are advanced strategies (such as introduction of zero‐dimensional, one‐dimensional and two‐dimensional fillers, mixing of different dimensional fillers, and multi‐layer structural designs) that have been published in recent years and are widely accepted.…”

Section: Resultsmentioning

confidence: 99%

Low‐content metal‐organic framework enhanced interface effect to improve the insulation properties of polyimide‐based composite films

Hui

Feng

et al. 2022

Polymers for Advanced Techs

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Polymer‐based nanodielectrics are widely used in microelectronics, aerospace and electrical insulation fields because of their excellent insulation and mechanical properties, but the strategies and mechanisms to improve their insulation strength need to be further studied. Herein, introducing MOFs (UiO‐66) particles into polyimide (PI) matrix obtained the unexpected discovery that MOFs with 3D porous structure did not degrade the insulation strength and mechanical stretching of composite films, conversely, remarkably increased the breakdown strength (Eb) and mechanical strength at low doping concentration. With only 1 wt% doped of UiO‐66, the maximum Eb of UiO‐66/PI composite film is 458.6 kV/mm, which is about 64% higher than PI (279.8 kV/mm). To study the mechanism of performance improvement, the interface structure was characterized by synchrotron radiation small‐angle X‐ray scattering, and the interface influence factor is introduced to modify the classical dielectric model. It was found that the hydroxyl groups on UiO‐66 can form hydrogen bonds with the PI molecular chain, and this strong interaction at the interface is the main reason for the performance improvement of low‐content doped composites. This study provides a strategy for improving the insulation properties of composites at low doping and offers some insights into the application of MOFs in high performance dielectrics.

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Section: Resultsmentioning

confidence: 99%

Low‐content metal‐organic framework enhanced interface effect to improve the insulation properties of polyimide‐based composite films

Hui

Feng

et al. 2022

Polymers for Advanced Techs

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“…Poor compatibility between the polymer matrix and the ceramic filler usually results in the serious structural loss, and the dielectric loss of PI‐based composite materials often reaches the order of 10 −1 . [ 37–40 ]…”

Section: Resultsmentioning

confidence: 99%

Excellent Polyimide Dielectrics Containing Conjugated ACAT for High‐Temperature Polymer Film Capacitor

Guo

Liu

et al. 2021

Macro Materials & Eng

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In order to meet the requirements of polymer dielectric materials for high thermal stability and excellent dielectric properties in the application of high‐temperature film capacitors, a series of polyimide (PI) films are fabricated by introducing a self‐synthesized aniline trimer (ACAT) with a conjugated structure in this work. Since the conjugated ACAT in the main chains of PI improves the electron polarization and carrier mobility of the PI molecular chains, the dielectric constant of the ACAT‐PI films is greatly enhanced (4.4–7.4). Meanwhile, the dissipation factor does not increase apparently (0.002–0.013). The dielectric properties are stable even when the temperature is up to 200 °C, the thermal degradation temperature is as high as 450 °C, and the mechanical properties are also excellent (70–105 MPa). Among all the films, the PI film with 5 mol% ACAT exhibits the maximal energy density of 3.6 J cm−3 under the field of 426 kV mm−1, the high tensile strength (90 MPa) and the excellent thermal stability (Td5 = 515 °C). The work paves the way to prepare high‐temperature polymer dielectric film materials with high energy storage density.

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“…5,6 Isovalent substitution of cations, such as Ca, Sr, and Zr is known to improve the electrical and thermal stability of pure BT without significantly affecting the inherent tetragonal crystal structure. 7,8 The adequate amount of Ca 2+ substitution at Ba 2+ site can provide excellent thermal stability along with slight improvement in ferroelectric and dielectric properties of pure BT. For achieving superior energy storage performance, the material should possess a high dielectric constant, large saturation polarization, and high breakdown strength.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, BT possesses excellent miscibility with various compounds, and hence, it has been combined with several materials to improve its electrical and magnetic properties 5,6 . Isovalent substitution of cations, such as Ca, Sr, and Zr is known to improve the electrical and thermal stability of pure BT without significantly affecting the inherent tetragonal crystal structure 7,8 . The adequate amount of Ca 2+ substitution at Ba 2+ site can provide excellent thermal stability along with slight improvement in ferroelectric and dielectric properties of pure BT.…”

Section: Introductionmentioning

confidence: 99%

Grain size engineered Ba_0.9Sr_0.1Ti_0.9Hf_0.1O₃‐Na_0.5Bi_0.5TiO₃ relaxor ceramics with improved energy storage performance

et al. 2020

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Novel lead‐free diphasic (1‐x)Ba0.9Sr0.1Ti0.9Hf0.1O3‐xNa0.5Bi0.5TiO3 (BSTH‐NBT) ceramic nanocomposites were synthesized via an economically viable modified mechano‐chemical activation technique. In the present investigation, we have developed an energy storage composite material by systematically optimizing the charge transport behavior and charge storage characteristics between the ferroelectric BSTH and piezoelectric NBT phase. The composite with x = 0.09 NBT concentration has shown the best energy storage properties with 1.61 J/cm3 discharge energy density along with 80.1% energy efficiency. The BSTH and NBT had a synergetic effect on the ferroelectric properties of the composites. The improvement in ferroelectric and piezoelectric properties along with excellent aging characteristics in composite materials is mainly attributed to enhancement in microstructural density, grain boundary interface, and stress effects. The improved dispersibility and excellent compatibility between BSTH and NBT phase have resulted in approximately 20% enhancement in breakdown strength of composite compared to pure BSTH ceramic.

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High energy density of polyimide composites containing one-dimensional BaTiO3@ZrO2 nanofibers for energy storage device

Cited by 38 publications

References 47 publications

Low‐content metal‐organic framework enhanced interface effect to improve the insulation properties of polyimide‐based composite films

Low‐content metal‐organic framework enhanced interface effect to improve the insulation properties of polyimide‐based composite films

Excellent Polyimide Dielectrics Containing Conjugated ACAT for High‐Temperature Polymer Film Capacitor

Grain size engineered Ba_0.9Sr_0.1Ti_0.9Hf_0.1O₃‐Na_0.5Bi_0.5TiO₃ relaxor ceramics with improved energy storage performance

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High energy density of polyimide composites containing one-dimensional BaTiO3@ZrO2 nanofibers for energy storage device

Cited by 38 publications

References 47 publications

Low‐content metal‐organic framework enhanced interface effect to improve the insulation properties of polyimide‐based composite films

Low‐content metal‐organic framework enhanced interface effect to improve the insulation properties of polyimide‐based composite films

Excellent Polyimide Dielectrics Containing Conjugated ACAT for High‐Temperature Polymer Film Capacitor

Grain size engineered Ba0.9Sr0.1Ti0.9Hf0.1O3‐Na0.5Bi0.5TiO3 relaxor ceramics with improved energy storage performance

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Product

Resources

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Grain size engineered Ba_0.9Sr_0.1Ti_0.9Hf_0.1O₃‐Na_0.5Bi_0.5TiO₃ relaxor ceramics with improved energy storage performance