From Fiber to Power: Recent Advances Toward Electrospun‐Based Nanogenerators

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

Published: Jan. 23, 2025

Abstract Electrospun micro/nanofibers have gained popularity recently for nanogenerators owing to their advantages of portability, compatibility, breathability, mechanical flexibility, and function integrability, etc. These merits offer unprecedented micro/nanostructure adjustment versatility. With the rapid advancements Internet Things (IoT) micro/nano technology, developments electrospun‐based with extra‐high performance, low cost, widely applicable are significant satisfying urgent demand efficient energy sources. To accelerate process, this paper provides a comprehensive analysis advantages, preparation processes, classifications, enhancement strategies concerning through systematically reviewing current related literature. Initially, electrospinning preparing briefly concluded. Then, unique characteristics various types elaborated. Furthermore, enhance performance versatility discussed, focusing on materials construction, structure design, functionalization assisted pre/post‐treatment. Finally, challenges coping addressed, providing future research interests next generation nanogenerators.

Language: Английский

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Large Electrocaloric Refrigeration Performance in Ferroelectric Polymer Nanocomposite with Complementary Nano-Structural Fillers

Published: Jan. 1, 2025

Language: Английский

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Harnessing Outer Space for Improved Electrocaloric Cooling

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

Published: Feb. 26, 2025

Abstract Solid‐state refrigeration based on the electrocaloric (EC) effect has recently been applied to thermal management for humans and electronics due its low power consumption, zero carbon emissions, compact size. However, temperature span of EC device is limited by adiabatic change ( ΔT ad ) caloric materials. Moreover, significant performance in high‐temperature environments, such as strong sunlight or parasitic heat sources, yet be demonstrated. In this study, a novel radiative sink/source‐integrated R ‐iEC) regulation system presented that overcomes inherent dissipation limitations devices using outer space reliable sustainable sink. To effectively dissipate heat, nonmetallic thermally conductive cooler (TCRC) implemented with high conductivity 1.1 W mK −1 exceptional spectral features, including solar reflectivity ≈96% emissivity ≈95% atmospheric window region. The ‐iEC fortified TCRC demonstrates superior compared conventional coolers, providing an additional cooling flux 87 m −2 . Under conditions fluxes exceeding 770 , improvement results maximum 240 surpassing metal sinks.

Language: Английский

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Microporous Transition Metal Phosphide Flame Retardant Toughened PA6 Composites with Excellent Thermal Conductivity and Ferroelectric Response

Composites Part B Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112502 - 112502

Published: April 1, 2025

Language: Английский

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Inverse Design of Active‐Source Metamaterials for Thermal Camouflage with Arbitrary Active Sources

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

Published: April 15, 2025

Abstract Precise control of active‐source thermal fields is critical for advanced technological applications, including camouflage, protection, and energy harvesting. However, the inherent heat generation from active sources often results in localized high‐temperature regions complex, non‐linear flux distributions, posing significant challenges effectively managing these fields. Here, a novel theoretical design framework presented metamaterials (ASM) by integrating inverse principles with transformation thermotics. This ASM allows conversion complex effects into tailored anisotropic conductivity thus enabling precise modulation variety applications. As proof‐of‐concept, camouflage demonstrated, ranging simple circular geometries to more multi‐leaf configurations, systematically investigate interactions between temperature fields, power sources. Both numerical simulations experimental validations are conducted substantiate effectiveness proposed approach. The work establishes versatile management offering potential applications such as chip design, battery technology, systems.

Language: Английский

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Large electrocaloric refrigeration performance in ferroelectric polymer nanocomposite with complementary nano-structural fillers

Materials Today Physics, Journal Year: 2025, Volume and Issue: 54, P. 101720 - 101720

Published: April 17, 2025

Language: Английский

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Radiation‐Enhanced Heat Pipe Radiator via Surface‐Engineered Hierarchical Resin‐Free Coating for Effective Passive Heat Dissipation of High‐Power Electronic Modules

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

Published: April 21, 2025

Abstract Effective heat dissipation is critical for high‐power modules amid increasing demands compact, lightweight, and high‐performance electronic devices. This study presents a passive cooling strategy employing type of hierarchical resin‐free coating (HRC) on the etched surfaces pipe radiator modules. The HRC consists graphene‐hybridized hexagonal boron nitride ( h ‐BN) nanosheet networks fabricated via scalable three‐step chemical etching substrate, ball‐milling exfoliation, silane coupling process. It achieves an infrared emissivity 0.97, owing to strong phonon vibrations within 2D nanosheets localized surface plasmon resonance from micro/nanostructures which induce electromagnetic field polarization, as confirmed by numerical simulation. Heat performance coated with HRC, compared uncoated one, apparently improved due enhanced radiative cooling. Experimental results demonstrate that coatings, relative yields 3.1–9.9 °C temperature reduction at air velocities 1–5 m s −1 decrease total thermal resistance up 16.7% under 1.5 kW load. work provides new design concept environmentally friendly, highly efficient, sustainable management solutions in

Language: Английский

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Topology optimization of thermoelectric generator for maximum power efficiency

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Thermoelectric generators offer a promising approach for harvesting waste heat from both natural and human-made sources, enabling sustainable electricity generation. While geometric design plays crucial role in optimizing device performance, conventional approaches remain confined to simple configurations, limiting efficiency improvements. This constraint arises the complex interplay of multiphysical interactions diverse thermal environments, which complicates structural optimization. Here, we introduce universal framework that integrates topology optimization (TO) with additive manufacturing systematically derive high-efficiency thermoelectric 3D architectures. By formulating an problem maximize power generation efficiency, our explores unprecedentedly large space, geometries materials across boundary conditions material properties. The resulting TO-derived consistently outperform cuboids, demonstrating significant gains. Beyond in-silico studies, provide theoretical insights experimental validation, confirming feasibility approach. Our study offers transformative way enhancing generation, broad implications next-generation energy technologies.

Language: Английский

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Fundamentals, performance, and advances in bioarchitected phase-change composites for carbon neutral and zero-energy in buildings

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 123, P. 116840 - 116840

Published: April 29, 2025

Language: Английский

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A bio-based phase change hydrogel via Schiff base for efficient thermal management

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163696 - 163696

Published: May 1, 2025

Language: Английский

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