phase change energy storage graphene
Molten Salt/Metal Foam/Graphene Nanoparticle Phase Change …
The binary and ternary mixtures of nitrates are desirable phase change materials (PCMs) as latent heat thermal energy storage media for solar energy applications. In this study, graphene oxide was synthesized with graphite powder first and then it was doped into HITEC salt or solar salt solvent with sonication using two-step …
Directional fiber framework wrapped by graphene flakes for …
Thermal energy storage, especially latent heat energy storage based on phase change material (PCM), is one of the most promising players in energy storage. ... Flexible graphene aerogel-based phase change film for solar-thermal energy conversion and storage in personal thermal management applications. Chem. Eng. J., 419 (2021), p.
Ag-graphene/PEG composite phase change materials for …
In this paper, we reported a new strategy to improve solar-to-thermal energy storage efficiency by introducing Ag nanoparticle-functionalized graphene nanosheets (Ag–GNS) to the polyethylene glycol (PEG) phase change system (Fig. 1).The novel materials (Ag–GNS/PEG) can harvest and convert visible light to thermal energy …
Dual-Functional Aligned and Interconnected Graphite …
Solar thermal energy conversion and storage within phase change materials (PCMs) can overcome solar radiation intermittency to enable continuous operation of many heating-related processes. However, the energy-harvesting performance of current storage systems is always limited by low efficiencies in either solar thermal energy …
Graphene–nickel/n-carboxylic acids composites as form-stable phase …
Therefore, efficient energy storage devices and systems are of critical importance to improve the energy efficiency and reduce the gap between energy demand and energy generation. Phase change materials (PCMs) can store and release latent heat when its phase change occurs [1], [2], [3]. Taking advantages of high heat storage …
Form-Stable Composite Phase Change Materials Based on Porous …
Solar–thermal energy conversion and storage technology has attracted great interest in the past few decades. Phase change materials (PCMs), by storing and releasing solar energy, are able to effectively address the imbalance between energy supply and demand, but they still have the disadvantage of low thermal conductivity and …
Dual-functional polyethylene glycol/graphene aerogel phase change ...
Latent heat storage [7], [8], [9] based on the characteristics that phase change materials (PCMs) absorb or release certain heat while maintaining almost constant temperature in the process of phase change is one of the important and common forms of thermal energy storage, and is increasingly applied to the solar-thermal energy …
Structurally engineered 3D porous graphene based phase change …
Micro-nano encapsulation strategy combining three-dimensional (3D) porous carriers and phase change materials (PCMs) has been widely investigated due to its structure stability, high efficiency, and designability. However, the current 3D scaffolds suffering from structure regularity are hard to meet the urgent requirements of high …
Fabrication, morphology and thermal properties of …
Apparently, the high phase-change latent heat and encapsulation efficiency of the prepared MEPCMs, as well as the mild phase-change temperature will benefit their practical application as micro-vehicles for energy storage and temperature regulation. Download : Download high-res image (393KB) Download : Download full-size …
Graphene oxide/polyurethane‐based composite solid–solid phase change ...
The preparation of phase change materials (PCMs) with high energy storage, thermal conductivity, and photothermal conversion capability is essential for improving solar energy conversion and storage. In this study, graphene oxide (GO) was incorporated into polyurethane (PU) prepared from 4,4′-diphenylmethane diissyanate (MDI) and …
Design of a graphene oxide@melamine …
Study on the improvement of supercooling and thermal properties of erythritol-based phase change energy storage materials. Renew. Energy, 175 (2021), pp. 80-97. ... Enhanced thermal energy storage performance of hydrous salt phase change material via defective graphene. J. Energy Storage, 48 (2022), Article 104064. View …
Advances in the Field of Graphene-Based Composites for Energy–Storage …
The intercalation/adsorption of K + ions within the graphene layers induces changes in the electronic structure of graphene, enabling the storage and release of electrical energy . Considerable progress has been achieved in the development of graphene-based PIBs, driven by extensive research efforts.
Effects of graphene doping on shape stabilization, thermal energy ...
The development of clean and renewable energy sources has been necessitated by the ever-increasing energy consumption, increasing environmental degradation caused using fossil fuels and concerns over the rise in CO 2 spreading. Functional phase change materials (PCMs)'' energy storage capacity is appealing …
Hybrid graphene aerogels/phase change material composites: …
Hybrid graphene aerogels (HGA) consisting of graphene oxide (GO) and graphene nanoplatelets (GNP) were prepared and introduced into polyethylene glycol (PEG) via vacuum impregnation, aiming at obtaining composite phase change materials (PCMs) with high thermal conductivity, outstanding shape-stabilization, high energy …
Scaphium scaphigerum/graphene hybrid aerogel for composite phase change …
Based on the disadvantages of the low thermal conductivity and easy leakage of the organic phase change energy storage material, Scaphium scaphigerum/graphene hybrid aerogel (SGA) with sparse porous structure was prepared by the template method and used as a thermally conductive reinforcing material to fabricate …
Form-stable phase change materials based on graphene-doped …
Notably, the PEG and PEG/PVA samples were unable to reach the phase change temperature after 600 s of light due to the lack of effective light absorption. However, PEG/PVA-GO and PEG/PVA-rGO started to phase change for energy storage at around 150 s. At the end of light illumination, the surface temperature of PEG/PVA-GO …
Transient thermal response of phase change material embedded …
Throughout this study, a systematic investigation was carried out on heating performances of phase change materials doped by graphene nanoplatelets (GNP) in an energy storage unit. The composite samples were prepared by dispersing GNP into organic PCM via melting temperatures between 61 and 66 °C and at various mass …
Electromagnetic and solar energy conversion and storage based …
In this present paper, we prepared a novel energy conversion and storage system based on the composite of Fe 3 O 4-functionalised graphene nanosheets (Fe 3 O 4-GNS) and PEG/SiO 2.The form-stable PCM of PEG/SiO 2 for thermal energy storage was prepared by a simple sol-gel method, which is a facile, low cost and …
Design of phase change composite with hierarchical energy …
To estimate the energy storage efficiency of PCCs, we define the photothermal conversion efficiency (η) in Eq. (1). (1) η = m Δ H P Δ t where m and ΔH represent the mass and the melting enthalpy of the phase change composite, respectively; P is the solar radiation power and Δt is the time of phase change transition.
Water
The present experimental investigation incorporates the preparation of aloe vera gel-based phase change nanofluid (NFPCM) for a cool thermal energy storage (CTES) system. Two sets of NFPCMs were produced by adding graphene nanoplatelets (GNP) in deionized water and aloe vera gel (0.20 wt%, 0.40 wt%, and 0.60 wt%). The …
Thermal properties and crystallization kinetics of pentaglycerine ...
Solid-solid phase change materials (SSPCMs) used in thermal energy storage (TES) system attract much attention in recent days. Here, graphene nanoplatelets (GnPs) were introduced into pentaglycerine (PG) with mass ratios of 1 wt%, 2 wt%, and 4 wt% to obtain PG/GnPs PCMs.
Carbon foam/reduced graphene oxide/paraffin composite phase change ...
The phase change enthalpy is a measure index of the latent heat energy storage capacity, which is beneficial for PCM to play a significant role in thermal management. The melting enthalpy and freezing enthalpy of PA reach 212.95 and 210.65 J·g −1, and those of c-MG3/PA with the relatively minimal PA content are 196.30 and …
Enhanced thermal conductive lauric acid/g-C3N4/graphene composite phase ...
Among various solar thermal storage methods, the latent heat storage based on phase change materials can absorb or release large amounts of energy through the changes in physical state, thus greatly broadening the application area of energy storage [4]. Phase change materials can be classified by different phase change …
Enhanced thermal energy storage performance of hydrous salt phase …
Structural modification of two-dimensional materials has a significant influence on performance. In this work, a novel preparation method is presented to get defective graphene and the as-obtained defective graphene shows great benefits for the thermal energy storage performance of phase change material (PCM).
Stearic acid/expanded graphite as a composite phase change …
Thermal energy storage with phase change material—A state-of-the art review. Sustainable Cities and Society, 10 (2014), pp. 87-100. ... Hybridizing graphene aerogel into three-dimensional graphene foam for high-performance composite phase change materials. Energy Storage Materials, 13 (2018), pp. 88-95.
Lignin-assisted construction of well-defined 3D graphene …
LHS, consisting of matrix and phase change material (PCM) for energy storage and release, is considered to be the most promising and applicable strategies ... Polyethylene glycol based shape-stabilized phase change material for thermal energy storage with ultra-low content of graphene oxide. Sol. Energy Mater. Sol. Cell., 123 …
Graphene–nickel/n-carboxylic acids composites as form-stable phase …
Superoleophilic graphene–nickel foam (PDMS–G–NF), which was prepared by coating graphene nanosheets onto nickel foam followed by surface modification with polydimethylsiloxane (PDMS), was used as porous supporting material to prepare form-stable phase change materials (PCMs) composites. Owing to the strong hydrophobic …
A critical review of phase change material composite performance ...
A critical review of phase change material composite performance through Figure-of-Merit analysis: Graphene vs Boron Nitride ... For PCMs to be effective and reliable as an energy storage medium, the heat transfer from the source to the PCM must be quick and efficient to promote the congruent melting of the PCM body. ...
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