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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Alicyclic Polyimide With Multiple Breakdown Self‐Healing Based on Gas‐Condensation Phase Validation for High Temperature Capacitive Energy Storage

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 14, 2024

Abstract Polymer dielectrics with combined thermal stability and self‐healing properties are specifically desired for high‐temperature film capacitors. The high of conventional polymers benefits from the abundance aromatic rings in molecule backbone, but carbon content sacrifices their properties. Here, analicyclic polyimide a glass transition temperature (256 °C) wide energy bandgap (4.58 eV) is designed, which exhibits electric conductivity more than an order magnitude lower that classical at fields temperatures. As result, alicyclic achieves discharged density 4.54 J cm −3 charge‐discharge efficiency above 90% 200 °C, superior to existing dielectric composites. low pyrolytic residual rate, retaining 93% breakdown strength after four electrical cycles. Distinguishing current condensed‐phase concept, first time, exploring capability presented based on dual mechanisms gas‐phase condensed‐phase. temperatures further indicate promise capacitors extreme conditions.

Language: Английский

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Constructing a dual gradient structure of energy level gradient and concentration gradient to significantly improve the high-temperature energy storage performance of all organic composite dielectrics†

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 491, P. 151634 - 151634

Published: April 30, 2024

Language: Английский

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Liquid metal interface mechanochemistry disentangles energy density and biaxial stretchability tradeoff in composite capacitor film

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Sept. 6, 2024

Language: Английский

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Significantly enhanced high-temperature energy storage performance for polymer composite films with gradient distribution of organic fillers

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154546 - 154546

Published: Aug. 3, 2024

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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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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Film capacitor materials for electric vehicle applications: Status Quo and future prospects

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101458 - 101458

Published: Feb. 1, 2025

Language: Английский

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Structural, dielectric and mechanical changes in BOPP films under different thermal aging conditions

Journal of Materials Research and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Bio-based Epoxy Resin Demonstrating High Breakdown Strength and Low Dielectric Loss via Intrinsic Molecular Charge Traps Construction

Composites Part B Engineering, Journal Year: 2024, Volume and Issue: 284, P. 111728 - 111728

Published: July 11, 2024

Language: Английский

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