High temperature polyimide nanocomposites containing two-dimensional nanofillers for improved thermal stability and capacitive energy storage performance

Nano Research, Journal Year: 2024, Volume and Issue: 17(8), P. 7746 - 7755

Published: June 24, 2024

Language: Английский

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Ultra-high electron affinity and peripheral electronegativity co-constructing all-organic dielectrics with outstanding capacitive performance at high temperature

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150874 - 150874

Published: March 31, 2024

Language: Английский

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High energy storage density achieved in polymer composites by hierarchical interface engineering design

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159343 - 159343

Published: Jan. 6, 2025

Language: Английский

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Surface Strengthening of Polymer Composite Dielectrics for Superior High‐Temperature Capacitive Energy Storage

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract Polymer dielectrics for high‐temperature capacitive energy storage suffer from low density and poor efficiency, which is mainly attributed to the exponential growth of conduction loss at high electric fields. Here, a surface strengthening strategy inhibit electrode‐limited polymer composite reported. The phase strengthened by in situ generated ultrafine silicon oxide (SiO 2 ) nanoparticles while bulk incorporating commercially available SiO nanoparticles. These wide bandgap can not only restrict movement macromolecular chains, but also act as deep traps capture charge carriers. As result, transport electrode/dielectric interface dielectric significantly restrained, thereby leading decrease loss. resultant film deliver discharged 4.26 J cm⁻ 3 200 °C, increased 1274.19% compared with that pristine film. employing suppress be easily extended other polymers improve insulation performances.

Language: Английский

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High‐Temperature Polymer Composite Dielectrics: Energy Storage Performance, Large‐Scale Preparation, and Device Design

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Abstract Film capacitors are widely used in advanced electrical and electronic systems. The temperature stability of polymer dielectrics plays a critical role supporting their performance operation at elevated temperatures. For the last decade, investigations for new with high energy storage higher temperatures (>200 °C) have attracted much attention numerous strategies been employed. However, there is currently still large gap between lab research large‐scale production. In this review, main effects on dielectric properties analyzed core modification summarized. scientific technological reasons difference practical application also discussed. Further, several processes film preparation typical device structure design reviewed. current product launches pertaining high‐temperature Conclusive insights future perspectives delineated to offer strategic direction ongoing prospective innovation materials.

Language: Английский

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Multilaminate Energy Storage Films from Entropy‐Driven Self‐Assembled Supramolecular Nanocomposites

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(28)

Published: April 26, 2024

Composite materials comprising polymers and inorganic nanoparticles (NPs) are promising for energy storage applications, though challenges in controlling NP dispersion often result performance bottlenecks. Realizing nanocomposites with controlled locations distributions within polymer microdomains is highly desirable improving capabilities but a persistent challenge, impeding the in-depth understanding of structure-performance relationship. In this study, facile entropy-driven self-assembly approach employed to fabricate block copolymer-based supramolecular nanocomposite films ordered lamellar structures, which then used electrostatic film capacitors. The oriented interfacial barriers well-distributed NPs self-assembled multilaminate effectively suppress leakage current mitigate risk breakdown, showing superior dielectric strength compared their disordered counterparts. Consequently, optimized composition exhibit high efficiency (>90% at 650 MV m

Language: Английский

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Dielectric nanocomposites with superb high-temperature capacitive performance based on high intrinsic dielectric constant polymer

Nano Research, Journal Year: 2024, Volume and Issue: 17(9), P. 8504 - 8512

Published: July 13, 2024

Language: Английский

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Enhancing the high-temperature energy storage properties of PEI dielectrics by constructing trap-rich covalently cross-linked networks via POSS-functionalized BNNS

Materials Horizons, Journal Year: 2024, Volume and Issue: 11(18), P. 4348 - 4358

Published: Jan. 1, 2024

Polymer films are ideal dielectric materials for energy storage capacitors due to their light weight and flexibility, but lower density poor heat resistance greatly limit application in high-temperature storage. Unlike the traditional method of solely adding wide-bandgap inorganic fillers enhance density, this study we constructed trap-rich hybrid covalently cross-linked networks polyetherimide (PEI)

Language: Английский

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Synergistically enhanced discharged energy density and efficiency achieved in designed polyetherimide-based composites via asymmetrical interlayer structure induced optimized interface effectiveness

Materials Horizons, Journal Year: 2024, Volume and Issue: 11(19), P. 4759 - 4768

Published: Jan. 1, 2024

The continuous advancement in energy storage technologies necessitates the iteration of dielectrics urgently. However, current state-of-the-art composite films fail to meet application requirements devices, which demand a combination high discharged density (Ue), efficiency (η), and excellent high-temperature performance. To address this challenge, we present an innovative interlayer composed pure BN nanosheets polyetherimide (PEI)-based asymmetrical multilayered composites doped with Na0.5Bi0.5TiO3 ceramic fibers. This structure confers PEI-based upon synergistic optimization polarization intensity, breakdown strength loss by designed interface effectiveness adopting tailored filler configuration as modulation means, can be further confirmed finite element simulations comparative experiments. resultant film achieves Ue 22.95 J cm-3 ultra-high η 96.81% at ambient temperature, along performances 12.88 79.26% 150 °C, surpassing all previously reported polymer terms both metrics. study provides new insights for developing high-performance suitable practical applications.

Language: Английский

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Electrostatic interaction bridges the charge transport kinetics and high-temperature capacitive energy storage performance of polymer dielectrics

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(20), P. 7627 - 7648

Published: Jan. 1, 2024

Charge transport in polymer dielectrics can be regulated by constructing a strong electrostatic interaction. Attraction introduces deep traps to restrain charge mobility but repulsion augments the barrier height scatter charges.

Language: Английский

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