Interfacial Engineering Using Covalent Organic Frameworks in Polymer Composites for High‐Temperature Electrostatic Energy Storage

Advanced Functional Materials, Год журнала: 2024, Номер 34(21)

Опубликована: Янв. 17, 2024

Abstract The use of inorganic nanofillers has been an effective method to improve high‐temperature capacitive performance dielectric polymers, though there are unmet challenges such as undesirable organic–inorganic compatibility, and low efficiencies energy densities. Herein, a surface functionalization strategy using covalent organic frameworks (COFs) is employed address in realizing high‐performing polymer composites. Specifically, core–shell structured nanoparticles, where ZrO 2 nanoparticles act the core COF material forms shell, constructed composited with polyetherimide (PEI) matrix. design leverages high electron affinity ( E A ) outer shell create traps, thereby capturing free charges limiting electrical conduction. Concurrently, wide bandgap introduce barriers impede charge injection migration. This orchestrated “energy level cascade” results marked reduction leakage current loss. resulting composite showcases impressive discharged density 6.21 J cm −3 at efficiency above 90%, maximum reaching 7.43 150 °C. These metrics position PEI/ZrO @COF surpass or be on par state‐of‐the‐art PEI composites other advanced dielectrics.

Язык: Английский

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Meliorative dielectric properties in core@double-shell structured Al@Al2O3@PDA/PVDF nanocomposites via decoupling the intra-particle polarization and inter-particle polarization

Materials Today Energy, Год журнала: 2024, Номер 41, С. 101543 - 101543

Опубликована: Март 1, 2024

Язык: Английский

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

Nano Research, Год журнала: 2024, Номер 17(8), С. 7746 - 7755

Опубликована: Июнь 24, 2024

Язык: Английский

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Synergistic regulation of intra-particle and inter-particle polarizations in BaTiO3@Al2O3/PVDF nanocomposites towards boosted overall dielectric properties

Materials Today Chemistry, Год журнала: 2024, Номер 43, С. 102492 - 102492

Опубликована: Дек. 28, 2024

Язык: Английский

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Aramid nanofibers at ultralow loadings: driving significant multifunctionality in epoxy composite dielectrics

Advanced Composites and Hybrid Materials, Год журнала: 2025, Номер 8(1)

Опубликована: Фев. 1, 2025

Язык: Английский

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

Chemical Engineering Journal, Год журнала: 2025, Номер 505, С. 159343 - 159343

Опубликована: Янв. 6, 2025

Язык: Английский

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Metal-organic cage crosslinked nanocomposites with enhanced high-temperature capacitive energy storage performance

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 17, 2025

Polymer dielectric materials are widely used in electrical and electronic systems, there have been increasing demands on their properties at high temperatures. Incorporating inorganic nanoparticles into polymers is an effective approach to improving properties. However, the agglomeration of destabilization organic-inorganic interface temperatures limited development nanocomposites toward large-scale industrial production. In this work, we synthesize metal-organic cage crosslinked by incorporating self-assembled cages with amino reaction sites polyetherimide matrix. The in-situ crosslinking not only achieves a homogeneous distribution components, but also constructs robust interfaces, which avoids interfacial losses conventional improves breakdown strength elevated Ultimately, developed exhibit exceptionally energy densities 7.53 J cm-3 (150 °C) 4.55 (200 charge-discharge efficiency 90%.

Язык: Английский

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Furoic acid-doped-over-oxidized poly (3, 4-ethylenedioxythiophene)-based electrochemical sensor for selective, sensitive and concurrent quantification of paracetamol, codeine phosphate and caffeine in pharmaceutical formulation

Journal of materials research/Pratt's guide to venture capital sources, Год журнала: 2025, Номер unknown

Опубликована: Янв. 17, 2025

Язык: Английский

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Overcoming Energy Storage‐Loss Trade‐Offs in Polymer Dielectrics Through the Synergistic Tuning of Electronic Effects in π‐Conjugated Polystyrenes

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 30, 2025

Abstract Achieving high‐performance dielectric materials remains a significant challenge due to the inherent trade‐offs between high energy storage density and low loss. A central difficulty lies in identifying suitable dipolar unit that can enhance polarity constant of material while effectively suppressing losses associated with polarization relaxation, charge injection, conduction. To address this, novel strategy is proposed introduces electron‐donating electron‐withdrawing substituents on benzene ring polystyrene‐based polymers, creating bulky dipole groups are resistant reorientation under an electric field. This approach mitigates relaxation manipulates band structure via substituent modification suppress conduction losses. Additionally, deformation π ‐electron cloud field enhances density. Ultimately, optimized chlorostyrene‐methyl methacrylate (MMA) copolymer exhibits 85% discharge efficiency 18.3 J cm − 3 , nearly three times styrene‐based copolymers same conditions. study new for designing high‐energy density, low‐loss polymer by precisely controlling effects modulate distribution ‐conjugated electron clouds.

Язык: Английский

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A review of interface engineering characteristics for high performance perovskite solar cells

Deleted Journal, Год журнала: 2024, Номер 2, С. 100005 - 100005

Опубликована: Апрель 25, 2024

Язык: Английский

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