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Graphene Phase Change Energilagring

Such abilities, though rare, lead to a number of exciting phenomena, such as phase-change memory effects. In the case of trilayer graphene, there are two common stacking configurations (ABA and ...

Light-induced irreversible structural phase transition in trilayer graphene

Such abilities, though rare, lead to a number of exciting phenomena, such as phase-change memory effects. In the case of trilayer graphene, there are two common stacking configurations (ABA and ...

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Nano‐Enhanced Graphite/Phase Change Material/Graphene …

The expanded graphite/PCM phase change composite eliminates leakage and increases effective thermal conductivity while the graphene coating enables radiative cooling for PCM regeneration. The composite demonstrates excellent thermal performance in a real BTMS and shows a 26% decrease in temperature when compared to conventional BTMS materials.

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One-step synthesis of graphene-based composite phase change …

Graphene-based composite phase change materials (PCMs) exhibit great potential applications in the field of solar-thermal energy conversion and storage, recently, due to their attracting capability of endowing the PCMs with superior light absorption ability and preventing the liquid phase leakage during the transition process. However, current synthesis methods of graphene-based …

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Graphene aerogel-based phase changing composites for thermal energy ...

Phase changing materials (PCM) release or absorb heat in high quantity when there is a variation in phase. PCMs show good energy storage density, restricted operating temperatures and hence find application in various systems like heat pumps, solar power plants, electronic devices, thermal energy storage (TES) systems. Though it has extensive usage in such a diverse range …

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Graphene-based phase change composites for energy harvesting …

Graphene-based nanostructures, as either graphene nanosheets or graphene-based porous nanostructures, can improve the thermal conductivity of phase change materials …

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Carbon nanotube graphene multilevel network based phase change …

Carbon nanotube graphene multilevel network based phase change fibers and their energy storage properties†. Xiaoyu Yang ab, Jingna Zhao * b, Tanqian Liao c, Wenya Li c, Yongyi Zhang b, Chengyong Xu a, Xiaohua Zhang * d and Qingwen Li b a School of Science, Nanchang Institute of Technology, Nanchang 330099, China b Key Laboratory of …

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Excellent heat transfer and phase transformation performance of ...

As a phase change material, erythritol has two main disadvantages: low thermal conductivity and high supercooling degree. In this study, we proposed a novel erythritol/graphene composite phase change material, and its thermal properties were predicted by molecular dynamics simulation. The effects of the graphene mass fraction, size and number of layers on the thermal conductivity …

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Multiresponsive Graphene‐Aerogel‐Directed Phase‐Change Smart Fibers

The fibers made from porous graphene aerogel/organic phase‐change materials coated with hydrophobic fluorocarbon resin render a wide range of phase transition temperature and enthalpy (0–186 J ...

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Improving the Cold Thermal Energy Storage Performance of …

Paraffin with 5 °C phase change temperature (Pn5) was employed as the phase change material (PCM). It was integrated into graphite, expanded graphite, and two types of …

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Modification of Graphene Aerogel Embedded Form-Stable Phase Change ...

Graphene aerogel-supported phase change material (PCM) composites sustain the initial solid state without any leakage problem when they are melted. The high portion of pure PCM in the composite ...

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Graphene-based Phase Change Composites for Energy Harvesting and ...

Graphene-based nanostructures, as either graphene nanosheets or graphene-based porous nanostructures, can improve the thermal conductivity of phase change materials and shape stability of these ...

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Characterization of Phase Change Materials Fabricated with …

3D porous graphene aerogel exhibits a high surface area which can hold plenty of pure phase change material (PCM) into the internal space. In order to maintain the flexibility of PCM without volume shrinkage under the external force, cross-linked graphene aerogel was prepared by the cysteamine vapor method. The cross-linked graphene aerogel had a high …

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Engineering nanocellulose/graphene hybrid aerogel for form …

Phase change materials (PCMs), which can store and release a large amount of thermal energy during phase change process, are widely applied in energy fields as latent heat energy storage and release media for effective thermal management [1], [2].PCMs have attracted significant attention among scientific researchers as an alternative energy for fossil energy to …

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Nanoclay Hybridized Graphene Aerogels Encapsulating Phase Change ...

The utilization of graphene aerogel encapsulated phase change materials (PCMs) presents a promising strategy to achieve solar-thermal energy conversion and storage. However, the self-stacking effect and inherent lattice defects in graphene aerogel significantly restrict its overall performance in the encapsulation of PCMs. Herein, interfacially self-assembled amino …

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Graphene aerogel stabilized phase change material for thermal …

Fabrication of shape-stable composite phase change materials based on lauric acid and graphene/graphene oxide complex aerogels for enhancement of thermal energy …

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Heat transfer study of phase change materials with graphene …

The thermal conductivity of commonly used phase change materials (PCM) for thermal energy storage (TES), such as, fatty acids, paraffin etc., is relatively poor, which is one of the main drawbacks ...

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Constructing cellulose nanocrystal/graphene nanoplatelet networks …

With the rapid consumption of natural resources and fossil fuels, developing new energy-saving materials has become more urgent (Yang et al., 2019; Zhao, Zhou, Wen, & Lei, 2015).Phase change materials (PCMs) are considered one of the most advanced energy-saving materials due to their ability to store and release latent heat during melting and crystallization …

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Melamine foam/reduced graphene oxide supported form-stable phase change ...

Paraffin wax (PW) is one kind of solid-liquid organic PCMs, which has been widely used because of its high latent heat, suitable phase change temperature and thermal stability [5].However, the practical applications of paraffin inevitably face two major problems, i.e., the liquid leakage during phase change and the strong rigidity [6], [7].The former would give rise to …

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An innovative graphene-based phase change composite …

Graphene-based phase change composites hold significant potential for solar energy utilization, but their poor thermal conductivity hinders their practical applications. In this work, an air-dried graphene skeleton (AGS) with excellent thermal conductivity enhancement efficiency was constructed by the ice templating method and syneresis, and ...

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Graphene-enhanced phase change materials for thermal management …

Incorporation of graphene to the hydrocarbon-based phase change material allows one to increase its thermal conductivity by more than two orders of magnitude while preserving its latent heat ...

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