Regulating Carrier Transport Behavior for Capacitive Energy Storage of Polymer Dielectrics in Harsh Environments

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

Published: March 27, 2025

Abstract Polymer dielectrics with high capacitive energy‐storage levels in harsh environments have become key components electrostatic capacitors. However, excessive losses polymer caused by carrier densities at temperatures and strong electric fields often result low energy storage efficiency, which is the most challenging problem that urgently needs to be solved. In existing studies, are mainly suppressed limiting formation; however, it very completely limit formation, especially fields. Therefore, this perspective proposes regulate transport behavior through “guiding/constraining/blocking” forms rather than previously oversimplified limitation strategy, further clarifies dominant structure factors inhibit reduce enhance efficiency. Meanwhile, influence of different structural designs on behavior, individually or collaboratively, must systematically studied determine specific mode thereby establishing a relationship between The presented expected offer novel effective theoretical basis for design fabrication advanced environments.

Language: Английский

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High Strength, Recyclable, Durable Polydimethylsiloxanes Based on Carboxylic Acid Aromatic Disulfides with Highly Efficient Room-Temperature Self-Healing

Polymer, Journal Year: 2025, Volume and Issue: unknown, P. 128125 - 128125

Published: Feb. 1, 2025

Language: Английский

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Suppressing Dipole-Dipole Coupling Enable High-Capacitance Relaxor Dielectrics with Highly Polar Fluorinated Aromatic Polythiourea in All-Organic Capacitor Prototype

Published: Jan. 1, 2025

Language: Английский

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Pinning and elongating of electric treeing induced by wrinkled nanosheets in polymer dielectrics towards significantly enhanced high-temperature energy storage performance

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The polyetherimide composite with 0.2 wt% alumina nanosheets exhibits pinned, elongated breakdown paths due to wrinkles, achieving an ultrahigh energy density of 8.27 J cm –3 (>90% efficiency) at 150 °C, 420% that pure film.

Language: Английский

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Preparation of multi-nitrogen/oxygen carbon derivatives for the adsorption of anionic pollutants: Urea decomposition and transformation of active sites

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120200 - 120200

Published: March 1, 2025

Language: Английский

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Remarkable High‐Temperature Energy Storage in Co‐Polymerized Polyetherimide Via Constructing Hybrid Electrostatic Potential Barriers

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

Published: March 7, 2025

Abstract High‐temperature dielectric polymers are increasingly attracting significant interest for energy storage applications in harsh environments. However, the exponentially increased conduction losses under high temperatures and elevated electric fields often cause serious degradation of capacitive performance dielectrics. Unlike most reported energy‐level tuning strategies, this study introduces a novel approach that constructs localized electrostatic barriers to enhance high‐temperature polyetherimide (PEI) films. By copolymerizing amide groups MPD (1,3‐Phenylenediamine) PAB (4,4′‐Diaminobenzanilide) into PEI backbone, strong separation effect dipoles is established, leading potentials difference. Density Functional Theory (DFT) proves intermolecular local potential fluctuations generate hybrid (4.2 eV) trap carriers suppress their migration within spatial freedom domain. Consequently, largely suppressed leakage current enhanced breakdown strength yielded co‐10PAB/90MPD polymer, creating density 4.3 J cm −3 ( η > 90%) at 200 °C as comparison original PEI‐MPD (2.1 ), which surpasses polymers. This work demonstrates promising paradigm dipolar regulation molecular level

Language: Английский

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Tailoring a dual crosslinking network in all-organic aramid composite film for superior high-temperature capacitive energy storage

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104180 - 104180

Published: March 1, 2025

Language: Английский

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Polymer dielectrics intercalated with a non-contiguous granular nanolayer for high-temperature pulsed energy storage

Energy storage materials, Journal Year: 2025, Volume and Issue: 77, P. 104213 - 104213

Published: April 1, 2025

Language: Английский

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Physical crosslinking optimized high-temperature capacitive energy storage of polyetherimide nanocomposites with ultralow C60 particles

Composites Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 111194 - 111194

Published: April 1, 2025

Language: Английский

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Machine learning-accelerated discovery of polyimide derivatives for high-temperature electrostatic energy storage

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104266 - 104266

Published: April 1, 2025

Language: Английский

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