Fuel, Год журнала: 2025, Номер 395, С. 135243 - 135243
Опубликована: Апрель 5, 2025
Язык: Английский
Advanced Materials, Год журнала: 2024, Номер 36(52)
Опубликована: Март 22, 2024
Abstract Triboelectric nanogenerator (TENG) manifests distinct advantages such as multiple structural selectivity, diverse selection of materials, environmental adaptability, low cost, and remarkable conversion efficiency, which becomes a promising technology for micro‐nano energy harvesting self‐powered sensing. Tribo‐dielectric materials are the fundamental core components high‐performance TENGs. In particular, charge generation, dissipation, storage, migration dielectrics, dynamic equilibrium behaviors determine overall performance. Herein, comprehensive summary is presented to elucidate dielectric transport mechanism tribo‐dielectric material modification principle toward The contact electrification started first, followed by introducing basic Subsequently, mechanisms strategies highlighted regarding physical/chemical, surface/bulk, coupling, structure optimization. Furthermore, representative applications based TENGs power sources, sensors demonstrated. existing challenges potential opportunities advanced outlined, guiding design, fabrication, materials.
Язык: Английский
Процитировано
62
Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(27), С. 16735 - 16747
Опубликована: Янв. 1, 2024
(1 − x )KNN– BCZT-based transparent ceramics with a W rec of 7.83 J cm −3 and an η 81.02% were obtained. High polarization boundaries conductive mechanism transition revealed to be the main reasons for such good performances.
Язык: Английский
Процитировано
26
Chemical Engineering Journal, Год журнала: 2025, Номер 505, С. 159343 - 159343
Опубликована: Янв. 6, 2025
Язык: Английский
Процитировано
3
Advanced Fiber Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 28, 2025
Язык: Английский
Процитировано
2
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
Процитировано
13
Advanced Science, Год журнала: 2024, Номер unknown
Опубликована: Июль 9, 2024
Abstract Triboelectric nanogenerators (TENGs) have become reliable green energy harvesters by converting biomechanical motions into electricity. However, the inevitable charge leakage and poor electric field (EF) of conventional TENG result in inferior tribo‐charge density on active layer. In this paper, TiO 2 ‐MXene incorporated polystyrene (PS) nanofiber membrane (PTMx NFM) trapping interlayer is introduced single electrode mode (S‐TENG) to prevent electron loss at interface. Surprisingly, charge‐trapping mechanism augments surface output performance TENGs. Polyvinylidene difluoride (PVDF) mixed polyurethane (PU) NFM used as tribo‐active layer, which improves crystallinity mechanical property PVDF delamination during long cycle tests. Herein, effect double‐layer capacitive model explained experimentally theoretically. With optimization PTMx thickness, S‐TENG exhibits a maximum open‐circuit voltage (280 V), short‐circuit current (20 µA) transfer (120 nC), power (25.2 µW cm −2 ). Then, utilized electrical appliances. addition, influence AC/DC EF simulation wound healing management (vitro L929 cell migration, vivo tissue regeneration) also investigated changing polarity trans‐epithelial potential (TEP) distribution wounded area.
Язык: Английский
Процитировано
11
Progress in Polymer Science, Год журнала: 2024, Номер 156, С. 101870 - 101870
Опубликована: Авг. 10, 2024
Язык: Английский
Процитировано
10
Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(21), С. 12501 - 12514
Опубликована: Янв. 1, 2024
Dielectric capacitors are widely used in the field of advanced electronic and power systems due to advantages high density, robust safety, long service life.
Язык: Английский
Процитировано
9
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Июнь 14, 2024
Abstract Establishing a harmonious equilibrium between high energy storage, minimal loss, and exceptional processability presents formidable challenge within the realm of dielectric polymers. To address this challenge, harnessing characteristics long‐chain side groups to enhance polarity toughness, as well fluorine effect improve insulation efficiency, random copolymer, poly(4‐fluorostyrene‐trifluoroethyl methacrylate) (P(FS‐3FEMA)), is successfully synthesized via copolymerization fluorine‐containing monomers, namely 4‐fluorostyrene (FSt) trifluoroethyl methacrylate (3FEMA). Experimental findings demonstrate that elongating chains enhances polymer boosts polarization strength, self‐healing capacity. Introducing atoms into maintains toughness while marginally increasing chain spacing, reducing relaxation loss induced by dipole reorientation under an applied electric field. Additionally, incorporation electron capture, effectively leakage likelihood thermal electrical breakdown. Ultimately, copolymer exhibits performance, characterized extraordinarily storage ( U e = 18.3 J cm −3 ), (efficiency exceeding 89%), enhanced (increased over 112%). This study novel approach harnesses reconcile conflicting requirements in dielectrics.
Язык: Английский
Процитировано
8
Materials, Год журнала: 2025, Номер 18(1), С. 198 - 198
Опубликована: Янв. 5, 2025
The dielectric properties of polymers play a pivotal role in the development advanced materials for energy storage, electronics, and insulation. This review comprehensively explores critical relationship between polymer chain conformation, nanostructure, properties, focusing on parameters such as constant, loss, breakdown strength. It highlights how factors like rigidity, free volume, molecular alignment, interfacial effects significantly influence performance. Special emphasis is placed impact nanofillers, weight, crystallinity, multilayer structures optimizing these properties. By synthesizing findings from recent experimental theoretical studies, this identifies strategies to enhance efficiency, reliability, mechanical stability polymer-based dielectrics. We also delve into techniques electrostatic force microscopy (EFM) focused ion beam (FIB) milling characterizing mechanisms, offering insights design next-generation high-performance polymers. Despite considerable progress, challenges achieving an optimal balance permittivity strength, understanding nanoscale phenomena, scaling industrial applications persist. These gaps can be addressed by systematic structure–property relations, processing techniques, environmental studies.
Язык: Английский
Процитировано
1