Polyethylene glycol/silica (PEG@SiO2) composite inspired by the synthesis of mesoporous materials as shape-stabilized phase change …
Moreover, the values of phase change enthalpy of melting and crystallization respectively changed by 0.24% and 0.25%, which are also acceptable for energy storage application. The above testing results indicate that synthetic PEG@SiO 2 has excellent heat storage reliability.
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Revealing the crystallization dynamics of Sb–Te phase change …
Understanding the crystallization dynamics of chalcogenide phase-change materials (PCMs) is crucial for optimizing their performance in data storage and …
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Supercooled sugar alcohols stabilized by alkali hydroxides for long-term room-temperature phase change solar-thermal energy storage …
Supercooled sugar alcohols stabilized by alkali hydroxides and polydopamine enable direct harvesting and long-term stable phase-change storage of solar-thermal energy at room temperature. Download : Download high-res image (179KB)Download : Download full-size image
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Co‐Harvest Phase‐Change Enthalpy and Isomerization Energy for High‐Energy Heat Output by Controlling Crystallization …
trolling the crystallization and energy level of Azo-g. According to the structural transformation and phase change, the basis of the exothermic mode is the light-driven synchronous or asynchronous release of ΔH c and ΔH p. Synchronous release controlled by a
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Spatiotemporal phase change materials for thermal energy long …
Phase change materials (PCMs) are considered the ideal solar thermal storage media, as they can absorb or release a large amount of latent heat during phase …
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Novel form-stable phase change materials with enhancing crystallization rate for thermal energy storage …
Monodisperse Na2SO4·10H2O@SiO2 microparticles against supercooling and phase separation during phase change for efficient energy storage Ind. Eng. Chem. Res., 56 ( 2017 ), pp. 3297 - 3308 CrossRef View in Scopus Google Scholar
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Study on the improvement of supercooling and thermal properties of erythritol-based phase change energy storage …
However, the insertion of MF will reduce the effective volume of phase change material (PCM), leading to lower energy storage capacity and higher energy storage costs. To solve this problem, this study prepared MF/stearic acid (SA) composite phase change materials (CPCM), established a visual experimental platform and …
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(PDF) Cold-crystallization of polyelectrolyte absorbed polyol for long-term thermal energy storage …
2. Abstract. A lack of efficient crystallization methods and the metastability of supercool ed liquids have limited the. use of supercooling phase change materials (PCMs) in long-term thermal ...
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Preparation and thermal performance enhancement of sodium thiosulfate pentahydrate
Heat energy storage using phase change materials (PCMs) in electric radiant floor heating system (ERFHS) is a favorable solution to the improvement of energy efficiency. In this paper, the sodium thiosulfate pentahydrate (Na 2 S 2 O 3 •5H 2 O,STP)- sodium acetate trihydrate (CH 3 COONa•3H 2 O, SAT) eutectic mixture was prepared by …
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Novel form-stable phase change materials with enhancing …
The energy storage behavior of the PCMs which used PEG as working material was realized by the segmental motion of PEG in the system. In other words, the …
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Crystallization temperature dependence of phase evolution and energy storage …
Dense niobate glass ceramics with a principal crystalline phase of KSr2Nb5O15 were obtained via melt-quenching and controlled crystallization technique. The research results reveal that with the crystallization temperature increasing from 800 to 950 °C, the dielectric constant and crystal phase content raise simultaneously. The …
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Designing Multiple Crystallization in Superlattice-like Phase-Change Materials for Multilevel Phase-Change …
A multilevel phase-change memory device was successfully designed, which was fabricated using a Ge40Te60/Cr superlattice-like (SLL) structure. In the SLL films, a two-step phase change process is observed at elevated temperatures, which reveals the crystallization of Ge40Te60 (GT) and an interface-dominated formation of Cr2Ge2Te6 …
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Temperature-dependent growth kinetic and crystallization behavior of the supercooled erythritol as a phase change material in long-term heat storage
Supercooled sugar alcohols stabilized by alkali hydroxides for long-term room-temperature phase change solar-thermal energy storage Chem. Eng. J., 452 ( 2023 ), Article 139328, 10.1016/j.cej.2022.139328
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Co‐Harvest Phase‐Change Enthalpy and Isomerization Energy …
Photoisomerization-induced phase change are important for co-harvesting the latent heat and isomerization energy of azobenzene molecules. …
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Sugar alcohol-based phase change materials for thermal energy storage…
The phase-change behavior of sugar alcohols for heat energy storage was first analyzed by Barone et al. in 1990 [20]. As shown in Table 1, sugar alcohols have high phase-change enthalpies of 180–340 J/g, low-to-medium phase-transition temperatures of …
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Synthesis and characterization of microencapsulated sodium sulfate decahydrate as phase change energy storage …
Sodium sulfate decahydrate (Na 2 SO 4 ·10H 2 O), as an inorganic hydrate salt with a moderate phase-change temperature of 32.4 C, a high enthalpy of 251.0 kJ/kg, and a non-hazardous nature, is appropriate for the storage of energy or drug release [16].
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Co‐Harvest Phase‐Change Enthalpy and Isomerization Energy for High‐Energy Heat Output by Controlling Crystallization …
1 Introduction Azobenzene chromophore (Azo) is considered an important photoresponsive candidate material for energy conversion and storage systems because of its unique photoisomerization behavior. [1-4] The reversible trans(E)–cis(Z) photoisomerization process enables Azo to absorb, store, and release photothermal …
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Mechanical agitation triggered crystallization of eutectic phase change …
Screening of sugar alcohols and their binary eutectic mixtures as phase change materials for low-to-medium temperature thermal energy storage. (Ⅱ): isothermal melting and crystallization behaviors Energy, 180 ( 2019 ), pp. 572 - 583
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Full article: Self-regulating thermal energy storage device
2 · 1. Phase change materials (PCMs) are characterized by high enthalpies of melting and crystallization, in which they turn from solid to liquid and vice versa [1,2]. In …
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Fabrication and characterization of dual-functional ultrafine composite fibers with phase-change energy storage and luminescence properties …
and characterization of dual-functional ultrafine composite fibers with phase-change energy storage and ... Note there is almost no change in the melting or crystallization point of the as ...
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Incorporation of controllable supercooled phase change material heat storage with a solar assisted heat pump: Testing of crystallization ...
Experimental and numerical study on the performance of a new high-temperature packed-bed thermal energy storage system with macroencapsulation of molten salt phase change material Appl. Energy, 221 ( April ) ( 2018 ), pp. 1 - 15, 10.1016/j.apenergy.2018.03.156
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Experimental and numerical study of modified expanded graphite/hydrated salt phase change material for solar energy storage …
Compared with thermochemical energy storage, phase change heat storage has advantages of simple operation, low cost and high cost-effectiveness (Wang et al., 2019). The main types of PCMs include crystalline hydrated salt PCMs, organic compounds and eutectic PCMs (Chen et al., 2019).
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Preparation, characterization, and thermal properties of microencapsulated phase change material for thermal energy storage …
Poly(ethylene glycol)/acrylic polymer blends as form-stable phase change materials for latent heat thermal energy storage applications AIChE J., 52 ( 9 ) ( 2006 ), pp. 3310 - 3314 CrossRef View in Scopus Google Scholar
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Optically-controlled long-term storage and release of thermal …
Phase-change materials (PCMs), such as salt hydrates 1, metal alloys 2, or organics 3, store thermal energy in the form of latent heat, above their phase …
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Crystallization
Crystallization. Crystallization is the process by which solids form, where the atoms or molecules are highly organized into a structure known as a crystal. Some ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas. Attributes of the resulting crystal depend largely on factors ...
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Electrically-triggered nucleation of supercooled sodium acetate trihydrate phase change …
Phase change energy storage technology has broad applications in many engineering fields, such as building energy conservation, aerospace, and thermal management of electric equipment. However, the inorganic phase change materials suffer a lot from supercooling, phase separation, and low thermal conductivity.
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Supercooling regulation and thermal property optimization of erythritol as phase change material for thermal energy storage …
Organic phase change materials possess the merits of high latent heat storage, small temperature changes, high chemical/thermal stability, low corrosion and reusability, and thus have attracted ...
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Screening of sugar alcohols and their binary eutectic mixtures as phase change materials for low-to-medium temperature thermal energy storage ...
Screening of sugar alcohols and their binary eutectic mixtures as phase change materials for low-to-medium temperature thermal energy storage. (Ⅱ): Isothermal melting and crystallization behaviors Author links open overlay panel Xue-Feng Shao a, Sheng Yang a, Chao Wang b, Yong-Jian Yang a, Wu-Jun Wang c, Yi Zeng d, Li-Wu …
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Thermal properties and crystallization kinetics of pentaglycerine/graphene nanoplatelets composite phase change material for thermal energy storage
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.
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Achieving a smart thermal management for lithium-ion batteries by electrically-controlled crystallization …
Supercooled phase change solution can undergo phase change crystallization and heat release at low temperatures, having a long-term heat storage property. This thermal management technology based on the energy storage and release process of PCM exhibits high sustainability and practical value.
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Thermal properties and crystallization kinetics of pentaglycerine/graphene nanoplatelets composite phase change material for thermal energy storage
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. The structure and thermal property of PG/GnPs PCMs were …
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Recent advances of sugar alcohols phase change materials for thermal energy storage …
Abstract. Sugar alcohol phase change material (PCM) with high latent heat and wide temperature range are widely applied in phase change thermal energy storage (TES) fields such as building energy efficiency and solar thermal utilization. Unfortunately, sugar alcohol-based PCM exist defects such as high supercooling and …
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Thermal properties and crystallization kinetics of pentaglycerine/graphene nanoplatelets composite phase change material for thermal energy storage
Solid-solid phase change materials (SS-PCMs) for thermal energy storage have received increasing inter- est because of their high energy-storage density and inherent advantages over solid-liquid ...
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