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

Advanced Materials, Год журнала: 2024, Номер 36(28)

Опубликована: Апрель 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

Язык: 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, Год журнала: 2024, Номер unknown

Опубликована: Окт. 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.

Язык: 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, Год журнала: 2024, Номер 491, С. 151634 - 151634

Опубликована: Апрель 30, 2024

Язык: Английский

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

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Сен. 6, 2024

Язык: 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, Год журнала: 2024, Номер 497, С. 154546 - 154546

Опубликована: Авг. 3, 2024

Язык: 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, Год журнала: 2024, Номер 17(20), С. 7627 - 7648

Опубликована: Янв. 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.

Язык: Английский

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

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 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.

Язык: Английский

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

Progress in Materials Science, Год журнала: 2025, Номер unknown, С. 101458 - 101458

Опубликована: Фев. 1, 2025

Язык: Английский

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

Journal of Materials Research and Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: 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, Год журнала: 2024, Номер 284, С. 111728 - 111728

Опубликована: Июль 11, 2024

Язык: Английский

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