Aerogel‐Functionalized Phase Change Materials toward Lightweight and Robust Thermal Management

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Abstract With their low density and high porosity, aerogels are widely used as supporting frameworks for phase change materials (PCMs). However, the host–guest solid–liquid phase‐change systems often encounter difficulties in optimizing balance between mechanical properties thermal energy storage performance, intrinsic advantages of not being fully realized. Herein, an aerogel‐functionalization‐PCM strategy, a completely converse route compared to traditional aerogel‐filling‐PCM method, toward lightweight, flexible PCM robust management is developed. As proof concept, silica aerogel particles (SAPs) functional components added polyvinyl alcohol‐polyethylene glycol network produce composite PCMs. The addition SAP reduces PCM's latent heat by 25% but significantly decreases heating rate 190% enhances insulation 147%, achieving 28 °C temperature drop at 80 °C. This work provides fresh perspective on design thermally PCMs demonstrates feasibility enhancing protection under reduced conditions.

Language: Английский

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Bioinspired design of photothermal anti-fouling fabrics for solar-driven sustainable seawater desalination

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110726 - 110726

Published: Jan. 1, 2025

Language: Английский

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Scalable Fabrication of Light-Responsive Superhydrophobic Composite Phase Change Materials via Bionic-Engineered Wood for Solar–Thermal Energy Management

Molecules, Journal Year: 2025, Volume and Issue: 30(1), P. 168 - 168

Published: Jan. 4, 2025

The growing demand for sustainable energy storage solutions has underscored the importance of phase change materials (PCMs) thermal management. However, traditional PCMs are always inherently constrained by issues such as leakage, poor conductivity, and lack solar conversion capacity. Herein, a multifunctional composite material (CPCM) is developed using balsa-derived morphology genetic scaffold, engineered via bionic catechol surface chemistry. scaffold undergoes selective delignification, followed simple, room-temperature polydopamine (PDA) modification to deposit Ag nanoparticles (Ag NPs) graft octadecyl chains, resulting in superhydrophobic hierarchical structure. This superhydrophobicity plays critical role preventing PCM leakage enhancing environmental adaptability, ensuring long-term stability under diverse conditions. Encapsulating stearic acid (SA) PCM, CPCM exhibits exceptional stability, achieving high latent heat 175.5 J g−1 an efficiency 87.7%. In addition, conductivity significantly enhanced along longitudinal direction, 2.1-fold increase compared pure SA, due integration NPs unidirectional wood architecture. synergy also drives efficient photothermal π-π stacking interactions PDA plasmon effects NPs, enabling rapid solar-to-thermal conversion. Moreover, demonstrates remarkable water resistance, self-cleaning ability, reliability, retaining its functionality through 100 heating–cooling cycles. balsa-based represents breakthrough integrating phase-change behavior with advanced offering promising applications solar–thermal systems.

Language: Английский

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Composite fabric with high photoabsorption and conductivity for efficient all-weather seawater desalination under low voltage

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159892 - 159892

Published: Jan. 1, 2025

Language: Английский

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Emerging Photothermal Materials from Lignin and Coal for Solar Vapor Generation

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

Published: Feb. 16, 2025

Abstract Solar vapor generation (SVG) garners significant attention as a technology for producing clean water owing to its high efficiency and zero carbon emissions. However, the widespread adoption of SVG is constrained by cost, low mechanical strength, complex fabrication processes current photothermal materials. Lignin coal, abundant in aromatic rings, C═O bonds, quinone structures, present natural advantages enhancing light absorption improving properties This review begins with an overview fundamentals strategies aimed at promoting efficiency. It then delves into structural characteristics conversion mechanisms lignin highlighting their unique contributions field. Further, latest advancements application lignin/coal‐based materials are comprehensively summarized. work not only lays systematic scientific foundation development next‐generation but also underscores potential value‐added utilization thereby contributing sustainable resource management.

Language: Английский

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Effects of In Situ Porous Carbon Modification on Thermal Energy Storage of Paraffin/Expanded Vermiculite Form-Stable Composite Phase Change Materials

Materials, Journal Year: 2025, Volume and Issue: 18(4), P. 870 - 870

Published: Feb. 17, 2025

The utilization of form-stable phase change materials (PCMs) represents a reliable technology for achieving energy conversion. In this study, starch was impregnated into the layers expanded vermiculite (EVM) and subsequently carbonized at high temperatures to produce in situ carbon modified (EVMC), which enhance heat storage efficiency. EVMC, characterized by its network, acted as encapsulated material, leading development paraffin (P)/EVCM-based shape-stable composite PCM (EVMCP). latent EVMCP measured 179 J/g, surpassing that EVMP 144.8 J/g. This finding suggested porous significantly improves ability. Furthermore, non-isothermal crystallization curves indicated EVMC markedly accelerated nucleation simultaneously restricted crystal growth.

Language: Английский

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Flexible MXene-functionalized composite phase change film with dual-mode of solar-thermal conversion and infrared stealth

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 509, P. 161279 - 161279

Published: March 5, 2025

Language: Английский

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Efficient encapsulation of organic phase change materials through Diels-Alder reaction and in situ assembly for excellent photothermal conversion and energy storage

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162411 - 162411

Published: April 1, 2025

Language: Английский

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Flexible Photothermal Phase Change Material with High Photothermal Properties Achieved by Promoted Dispersion of Hydrophobically Modified Eumelanin and its Photovoltaic Applications

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Abstract Photothermal phase change materials (PPCMs) are prevalent in energy harvesting and thermal management, owing to their dual functionality of solar‐to‐heat conversion latent heat storage capacity. However, conventional PPCMs still face challenges, including reliance on non‐renewable photothermal agents, low efficiency, leakage issues, inflexibility, which collectively hinder widespread application. Here, a flexible with high properties is prepared by modifying eumelanin oleoyl chloride improved interfacial compatibility Styrene‐butadiene rubber (SBR), followed uniform incorporation paraffin wax (PW) into the matrix via physical mixing. The composite exhibits considerable elongation at break 412.0%, acceptable tensile strength 1 MPa, outstanding efficiency up 81.7% only 2 wt.% modified eumelanin. Furthermore, material maintains meagre rate 0.81% PW content 70 wt.%, accompanied favorable melting 144.98 J g −1 freezing 145.30 . Thanks these excellent properties, obtained has potential applications management. Moreover, its integration Seebeck thermoelectric generator produces enough output power range small appliances, miniature fans, electronic clocks light bulbs.

Language: Английский

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Development of a phase-change energy storage gel via grafting for efficient and sustainable solar-driven water evaporation

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162648 - 162648

Published: April 1, 2025

Language: Английский

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