graphene phase-change energy storage
روابط عشوائية
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 …
يتعلم أكثرFe3O4-functionalized graphene nanosheet embedded …
In this paper, we report novel magnetic- and sunlight-driven energy conversion and storage nanocomposites based on Fe 3 O 4-functionalized graphene nanosheet (Fe 3 O 4 –GNS) embedded form-stable polymer …
يتعلم أكثرThermal properties of beeswax/graphene phase change material as energy storage …
Ben Khedher N used numerical simulation methods to study the thermal behavior of a phase change heat storage room and an energy storage system using solid-liquid PCM [21,22].
يتعلم أكثرGraphene Aerogels Enhanced Phase Change Materials prepared …
Superior to other nano-enhanced phase change materials (NePCMs), graphene-based PCMs are available to achieve higher thermal conductivity with an extremely low graphene loading, ... Carbon nano-additives to enhance latent energy storage of phase change materials. J. Appl. Phys., 103 (2008), pp. 519-525. Google …
يتعلم أكثرMelting of graphene based phase change nanocomposites in vertical ...
Exercise of LHTES system gives a new direction for energy storage application and various geometrical configurations have been proposed for phase change material (PCM) based energy storage systems. Zivkovic et al. [1] numerically compared the performance of rectangular and cylindrical configurations and reported that rectangular …
يتعلم أكثرDirectional 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.
يتعلم أكثرGraphene-oxide-induced lamellar structures used to fabricate …
Hence, thermal energy storage based on phase change materials (PCMs) has drawn much attention in academia and industry alike [4], [5]. PCMs can be used to absorb and release thermal energy over a defined temperature range due to both their high energy-storage capacity and their isothermal nature during heat storage and …
يتعلم أكثرForm-stable paraffin/graphene aerogel/copper foam composite phase change material for solar energy conversion and storage …
Polyethylene glycol/graphene oxide aerogel shape-stabilized phase change materials for photo-to-thermal energy conversion and storage via tuning the oxidation degree of graphene oxide Energy Convers. Manag., 146 ( 2017 ), pp. 253 - 264
يتعلم أكثرEnergy-Efficient Phase-Change Memory with Graphene as a …
Phase-change memory (PCM) is an important class of data storage, yet lowering the programming current of individual devices is known to be a significant challenge. Here …
يتعلم أكثرForm-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 …
يتعلم أكثرCapric acid phase change microcapsules modified with graphene oxide for energy storage …
To improve the efficiency of energy, phase change microcapsules with capric acid as core material and urea–formaldehyde resin modified by graphene oxide (GO) as shell material were synthesized by in situ polymerization. The particle characteristics, chemical structure, thermal conductivity and thermal stability of capric acid phase change microcapsules …
يتعلم أكثرGraphene-oxide-induced lamellar structures used to fabricate …
1. Introduction. With the ever-growing energy demand and serious environmental pollution from the burning of fossil fuels, the development of high-performance, low-cost, and environmental-friendly energy storage techniques have become increasingly important [1], [2], [3].Hence, thermal energy storage based on phase …
يتعلم أكثرDesign of a graphene oxide@melamine foam/polyaniline@erythritol composite phase change material for thermal energy storage …
Phase change materials (PCMs) are effective carriers for thermal energy storage and conversion, which is one of the most practical media for improving energy efficiency. Improving the storage efficiency of PCMs and achieving multi-source driven storage conversion are effective methods to broaden the application of PCMs.
يتعلم أكثرHybrid 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 …
يتعلم أكثرThermal performance of modified melamine foam/graphene…
The development of phase change materials (PCMs) is hampered by issues like leakage, poor thermal conductivity, and poor light absorption. In this study, we innovatively combined modified melamine foam (MF) and graphene nanoparticle (GNP) to address these defects of PCMs in the solar-thermal energy system.
يتعلم أكثرHeat transfer study of phase change materials with graphene …
Not applicable due to no phase change for the graphene and aluminum. ... Review on thermal energy storage with phase change materials (PCMs) in building applications. Appl. Energy, 92 (2012), pp. 593-605, 10.1016/j.apenergy.2011.08.025. View PDF View article View in Scopus Google Scholar.
يتعلم أكثرMolten 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 …
يتعلم أكثرThermal 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.
يتعلم أكثرPolypyrrole-coated conjugated microporous polymers/expanded graphene …
Phase change materials (PCMs) composites are of great importance for a wide range of applications in energy conversion and storage, waste heat recovery and utilization, thermal energy management in building, electronic devices cooling and heat insulation, etc. Herein, a novel strategy for the fabrication of PCM composites for …
يتعلم أكثرPrediction of thermal transport properties for Na2CO3/Graphene …
In this paper, a new Na 2 CO 3 /Graphene based phase change material (PCM) with sandwich structure was proposed and designed for the application of thermal energy storage, the microstructure of which was established, and its thermal transport properties were investigated by means of molecular dynamics simulations, and the …
يتعلم أكثرElectromagnetic 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 …
يتعلم أكثرFlexible graphene aerogel-based phase change film for solar-thermal energy conversion and storage in personal thermal management applications …
There are some problems in the applications of phase change materials, such as liquid leakage during solid-liquid phase change, and low thermal conductivity during heat transfer process. Three-dimensional network (3DN) structural materials stood out among many encapsulation materials of composite phase change materials (CPCMs) …
يتعلم أكثرHigh Performance Graphene-Based Phase Change Material in …
Abstract: Fatty acids are highly preferred as phase change materials (PCMs) for thermal energy storage. However, low thermal conductivity limits their thermal performance and …
يتعلم أكثرFabrication and characterization of a novel polyurethane microencapsulated phase change material for thermal energy storage …
Nanoencapsulation of phase change materials (PCMs) and their applications in various fields for energy storage and management Adv. Colloid Interface Sci., 283 ( 2020 ), Article 102226 View PDF View article View in Scopus Google Scholar
يتعلم أكثرMelting of graphene based phase change nanocomposites in vertical ...
Melting of graphene based phase change nano composites is investigated numerically. ... Experimental study of a phase change thermal energy storage with copper foam. Appl. Therm. Eng., 101 (2016), pp. 247-261, 10.1016/j.applthermaleng.2016.02.095. View PDF View article View in Scopus Google …
يتعلم أكثرGraphene oxide/polyurethane‐based composite solid–solid phase …
The preparation of phase change materials (PCMs) with high energy storage, thermal conductivity, and photothermal conversion capability is essential for improving solar …
يتعلم أكثرEnergies | Free Full-Text | Preparation and Characterization of
Simultaneously, much attention has been paid to developing renewable energy sources and improving energy utilization and management around the world, owing to the energy crisis and environmental pollution caused by carbon-based fossil energy sources such as coal [13,14].Phase change materials (PCMs) are advantageous in …
يتعلم أكثرAccelerating the solar-thermal energy storage via inner-light
Phase change material for solar-thermal energy storage is widely studied to counter the mismatch between supply and demand in solar energy utilization. …
يتعلم أكثرPreparation and thermal characterization of n-octadecane/pentafluorostyrene nanocapsules for phase-change energy storage …
Novel nanoencapsulated n-octadecane/poly phase-change energy storage material is produced. • Nanocapsules show good morphology, high latent enthalpy and excellent thermal stability. • Mass ratio between …
يتعلم أكثرRecent advances in graphene-based phase change composites for …
This study examines the recent advancements in graphene-based phase change composites (PCCs), where graphene-based nanostructures such as graphene, …
يتعلم أكثرDesign 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 …
يتعلم أكثرAdvances in the Field of Graphene-Based Composites …
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 …
يتعلم أكثرMolecular dynamics simulation of thermal properties in composite phase …
Latent heat storage is more environmentally friendly than traditional fossil fuel energy storage technology. The technology of latent heat storage using the phase change characteristics of phase change materials has high energy storage density and low cost, and its temperature can be almost kept constant during the phase change process [12]. …
يتعلم أكثرPreparation and characterization of capric-stearic acid
Latent heat thermal energy storage has already been regarded as the highly effective method to overcome the energy shortage problem. Phase change material (PCM) is highly efficient energy storage material, which can change the material morphology and structure, absorb or release a large amount of energy with the changing …
يتعلم أكثرThermal properties of beeswax/graphene phase change material as energy ...
The basic properties of a phase change material are the phase change temperature and latent heat [6]. Transfer of thermal energy in a phase change material occurs during the phase change process from one phase to another phase [7]. Phase changes in these materials are separated into solid-solid, solid-liquid, and solid-gas.
يتعلم أكثرUltra-light and flexible graphene aerogel-based form-stable phase change materials for energy conversion and energy storage …
Hierarchical graphene foam-based phase change materials with enhanced thermal conductivity and shape stability for efficient solar-to-thermal energy conversion and storage [J] Nano Res., 10 ( 3 ) ( 2016 ), pp. 802 - 813
يتعلم أكثرAg-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 …
يتعلم أكثرGraphene aerogel stabilized phase change material for thermal energy …
Phase change material (PCM) with thermal energy storage capacity has been a hot topic due to the advantages of satisfying the demand for energy storage, saving and conversion. In this work, graphene oxide (GO) was introduced to prepare a three-dimensional (3D) continuous network of graphene aerogel (GA) via a simple …
يتعلم أكثرHigh-energy storage graphene oxide modified phase change …
Graphene oxide (GO) was used as the photon captor and paraffin wax as the phase change material (PCM). The chemical, physical and thermal properties of the …
يتعلم أكثرEnabling superior thermo-mechanical performance of
The usage of phase change materials (PCMs) in TESSs has been considered as an attractive solution to improve the energy storage performance of TESSs. PCMs can reversibly absorb and dissipate heat at almost stable temperature span in the process of phase transition [[8], [9], [10]].
يتعلم أكثرEngineering nanocellulose/graphene hybrid aerogel for form-stable composite phase change materials with high phase change enthalpy for energy storage
Semantic Scholar extracted view of "Engineering nanocellulose/graphene hybrid aerogel for form-stable composite phase change materials with high phase change enthalpy for energy storage" by Minghui Guo et al. …
يتعلم أكثر