Efficient storage of thermal energy can be greatly enhanced by the use of phase change materials (PCMs). The selection or development of a useful PCM requires careful consideration of many physical and chemical properties. In this review of our recent studies of PCMs, we show that linking the molecular struc
Phase change materials (PCMs) used for the storage of thermal energy as sensible and latent heat are an important class of modern materials which substantially contribute to the efficient use and conservation of waste heat and solar energy.
Among the various non-equilibrium properties relevant to phase change materials, thermal conductivity and supercooling are the most important. Thermal conductivity determines the thermal energy charge/discharge rate or the power output, in addition to the storage system architecture and boundary conditions.
In contrast, phase change energy storage offers advantages such as high energy density, small size, and temperature stability, making it a promising direction of development , . Therefore, phase change energy storage is expected to play a more important role in the field of energy storage . Fig. 1.
Therefore, molecular solids in which the molecules are flexible and/or H-bonded, are strong prospects for phase change materials based on their high values of Δ fusH. However, there is scope to learn more from studies of melting of long-chain unbranched organic molecules, given their role as phase change materials.
The limited application of organic polymers in phase change energy storage is attributed to their low thermal conductivity . This limitation primarily arises because heat transfer in non-metallic materials, such as organic polymers, depends on elastic waves from lattice vibrations, known as phonon energy transfer , .
Phase change materials for thermal energy storage
This paper reviews the present state of the art of phase change materials for thermal energy storage applications and provides a deep insight into recent efforts to develop …
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Molecular dynamics simulations of phase change materials for …
Phase change materials (PCM) have had a significant role as thermal energy transfer fluids and nanofluids and as media for thermal energy storage. Molecular dynamics (MD) simulations, can play a significant role in addressing several thermo-physical problems of PCMs at the atomic scale by providing profound insight
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Intelligent phase change materials for long-duration thermal energy storage
In a recent issue of Angewandte Chemie, Chen et al. proposed a new concept of spatiotemporal phase change materials with high supercooling to realize long-duration storage and intelligent release of latent heat, inspiring the design of advanced solar thermal fuels.
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Chemistry in phase change energy storage: Properties regulation …
By exploiting the conversion between the crystalline state and the amorphous state of the composite material molecules, heat energy storage and release can be achieved, resulting in solid–solid phase change behavior. The key to solid–solid phase change lies in the movement of soft segments within the PCM molecules under heating conditions ...
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Organic Phase Change Materials for Thermal Energy …
Materials that change phase (e.g., via melting) can store thermal energy with energy densities comparable to batteries. Phase change materials will play an increasing role in reduction of greenhouse gas …
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Intelligent phase change materials for long-duration thermal …
In a recent issue of Angewandte Chemie, Chen et al. proposed a new concept of spatiotemporal phase change materials with high supercooling to realize long-duration storage …
Learn More
Stimuli-Responsive Organic Phase Change Materials: Molecular …
In this Account, we will introduce the cutting-edge design principles of controllable phase change materials that have demonstrated the storage of thermal energy for up to a couple of months without crystallization over a wide temperature range, from subzero to over 100 °C, which addresses the major weakness of conventional phase change materials.
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Phase change materials for thermal energy storage: A …
Phase change materials (PCMs), which are commonly used in thermal energy storage applications, are difficult to design because they require excellent energy density and thermal transport, both of which are difficult to …
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Recent advances in phase change materials for thermal energy storage
Efficient storage of thermal energy can be greatly enhanced by the use of phase change materials (PCMs). The selection or development of a useful PCM requires careful consideration of many physical and chemical properties. In this review of our recent studies of PCMs, we show that linking the molecular struc
Learn More
Phase change material-based thermal energy storage
Phase change material (PCM)-based thermal energy storage significantly affects emerging applications, with recent advancements in enhancing heat capacity and cooling power. This perspective by Yang et al. …
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Recent advances in phase change materials for thermal …
Efficient storage of thermal energy can be greatly enhanced by the use of phase change materials (PCMs). The selection or development of a useful PCM requires careful consideration of many physical and chemical …
Learn More
Stimuli-Responsive Organic Phase Change Materials: …
In this Account, we will introduce the cutting-edge design principles of controllable phase change materials that have demonstrated the storage of thermal energy for up to a couple of months without crystallization over a wide temperature …
Learn More
Phase change materials for thermal energy storage
This paper reviews the present state of the art of phase change materials for thermal energy storage applications and provides a deep insight into recent efforts to develop new PCMs showing enhanced performance and safety. Specific attention is given to the improvement of thermal conductivity, encapsulation methods and shape stabilization ...
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Full Spectrum Solar Thermal Energy Harvesting and Storage by …
The physics of molecular energy and phase-change storage is combined to introduce a hybrid paradigm for potential 24/7 energy delivery using solar thermal energy. An integrated system is developed for simultaneous harvesting and storage of energy. In large-scale operations, this integrated system helps mitigate thermal losses that exist in conventional …
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Property-enhanced paraffin-based composite phase change
Research on phase change material (PCM) for thermal energy storage is playing a significant role in energy management industry. However, some hurdles during the storage of energy have been perceived such as less thermal conductivity, leakage of PCM during phase transition, flammability, and insufficient mechanical properties. For overcoming such obstacle, …
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Phase change materials for thermal energy storage: A …
Phase change materials (PCMs), which are commonly used in thermal energy storage applications, are difficult to design because they require excellent energy density and thermal transport, both of which are difficult to predict from simple physics-based models. In this Perspective, we describe recent advances in the understanding of the ...
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(PDF) Molecular dynamics simulations of phase change materials …
Phase change materials (PCM) have had a significant role as thermal energy transfer fluids and nanofluids and as media for thermal energy storage. Molecular dynamics (MD) simulations, can play a ...
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(PDF) Organic Phase Change Materials for Thermal Energy Storage ...
Materials that change phase (e.g., via melting) can store thermal energy with energy densities comparable to batteries. Phase change materials will play an increasing role in...
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Composite phase-change materials for photo-thermal …
Photo-thermal conversion phase-change composite energy storage materials (PTCPCESMs) are widely used in various industries because of their high thermal conductivity, high photo-thermal conversion efficiency, high latent heat storage capacity, stable physicochemical properties, and energy saving effect. PTCPCESMs are a novel type material …
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Chemistry in phase change energy storage: Properties regulation …
Thermal storage can be categorized into sensible heat storage and latent heat storage, also known as phase change energy storage [16] sensible heat storage (Fig. 1 a1), heat is absorbed by changing the temperature of a substance [17].When heat is absorbed, the molecules gain kinetic and potential energy, leading to increased thermal motion and …
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Phase change material-based thermal energy storage
Phase change material (PCM)-based thermal energy storage significantly affects emerging applications, with recent advancements in enhancing heat capacity and cooling power. This perspective by Yang et al. discusses PCM thermal energy storage progress, outlines research challenges and new opportunities, and proposes a roadmap for the research ...
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Phase change material-based thermal energy storage
Phase change materials (PCMs) having a large latent heat during solid-liquid phase transition are promising for thermal energy storage applications. However, the relatively low thermal conductivity of the majority of promising PCMs (<10 W/ (m ⋅ K)) limits the power density and overall storage efficiency.
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Organic Phase Change Materials for Thermal Energy Storage
Materials that change phase (e.g., via melting) can store thermal energy with energy densities comparable to batteries. Phase change materials will play an increasing role in reduction of greenhouse gas emissions, by scavenging thermal energy for later use.
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Chemistry in phase change energy storage: Properties regulation …
By exploiting the conversion between the crystalline state and the amorphous state of the composite material molecules, heat energy storage and release can be achieved, …
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Superior thermal energy storage performance of NaCl-SWCNT …
Superior thermal energy storage performance of NaCl-SWCNT composite phase change materials: A molecular dynamics approach Author links open overlay panel Yinsheng Yu a b, Chenyang Zhao a, Yubing Tao a, Xi Chen b c, Ya-Ling He a
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Recent developments in phase change materials for energy storage ...
The materials used for latent heat thermal energy storage (LHTES) are called Phase Change Materials (PCMs) [19]. PCMs are a group of materials that have an intrinsic capability of absorbing and releasing heat during phase transition cycles, which results in the charging and discharging [20] .
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