Phase change materials with appropriate transition temperatures can help to regulate body temperature to a suitable range. In this work, a form-stable phase change hydrogel …
Encapsulated phase change materials (EPCMs) have gained significant attention in various fields related to cooling and heating, particularly in thermal energy storage, owing to their ability to absorb and release a large amount of thermal energy. By encapsulating phase change materials in protective shells, EPCMs can overcome the …
We combined CH 3 COONa supersaturated solution with PAM hydrogel to prepare phase change hydrogels (PAM-SA). The new nature of phase change for …
Hydrogels have recently garnered tremendous interest due to their potential application in soft electronics, human–machine interfaces, sensors, actuators, and flexible energy storage. Benefiting from their impressive combination of hydrophilicity, metallic conductivity, high aspect ratio morphology, and wide
Stearic acid (SA) is being used as phase change material (PCM) in energy storage applications. In the present study, the microencapsulation of SA with SiO2 shell was carried out by sol–gel method.
As a result, PAM‐SA‐120% shows excellent adhesive performance (adhesion strength, 348 kPa) compared with PAM hydrogel adhesive (adhesion strength, 7 kPa). The stimuli‐induced crystallization from H‐PAM‐SA‐120% phase change hydrogels releases thermal controllably, which can be utilized for thermochromic materials and …
As a result, PAM-SA-120% shows excellent adhesive performance (adhesion strength, 348 kPa) compared with PAM hydrogel adhesive (adhesion strength, 7 kPa). The stimuli-induced crystallization from H-PAM-SA-120% phase change hydrogels releases thermal controllably, which can be utilized for thermochromic materials and …
This high-performance ion thermoelectric hydrogel offers more possibilities for energy harvesting and storage in flexible materials [95]. In the context of mitigating carbon emissions and addressing the growing global electricity demand, the utilization of low-grade thermal energy for direct power generation through ion thermoelectric systems …
This investigation offers a facile method to construct a skin-friendly flexible phase-change glycerol hydrogel and provides an …
Solar-driven interface water evaporation has been demonstrated to be one of the most promising technologies for alleviating global water pollution and water shortage. Although significant advances have been achieved for improving the solar-to-vapor efficiency, the design and fabrication of an all-day solar s
A novel double-layered hydrogel based on the polyacrylamide matrix, pen ink, and phase-change microcapsules was developed to construct a hydrogel-based evaporator for efficient and continuous seawater desalination. The n-eicosane (core)@crystalline TiO 2 (shell) phase-change microcapsules were fabricated through …
Organic phase change materials (PCMs) have great potential in solar energy storage and thermal management. Herein, a novel system of integrated photothermal-thermal storage function was designed and prepared based on sodium alginate (SA) hydrogel combined with photothermal materials (CuS-CNTs) and pure …
Multifunctional polyacrylamide/hydrated salt/MXene phase change hydrogels with high thermal energy storage, photothermal conversion capability and strain sensitivity for personal healthcare. Composites Science and Technology 2023, 234, …
Latent heat energy storage materials, also known as PCMs, can be classified according to the type of phase change: solid-gas, solid-solid, solid-liquid and liquid-gas. Solid-gas and liquid-gas phase change processes involve large volume variations and are consequently inappropriate for large-scale applications.
Abstract. Phase change materials (PCMs) with excellent photothermal conversion performance display great potential for increasing the utilization of solar …
Fig. 2 shows the FTIR spectra. For 1-octadecanol, the peak at 2919 cm −1 and 2850 cm −1 are attributed to the antisymmetric and symmetric stretching vibration of -CH 2-, 1466 cm −1 is ascribed to the bending vibration of -CH 2-, 1063 cm −1 is relative to the stretching vibration of C O, and 724 cm −1 is caused by the deformation vibration of …
In recent years, continuous consumption of fossil fuels and energy crisis have made the energy storage techniques such as sensible heat storage, latent heat storage and battery system to obtain great attention and development [1,2,3,4,5,6].Among them, latent heat storage using phase change materials (PCMs) is a commercial …
Phase change materials possess the merits of high latent heat and a small range of phase change temperature variation. Therefore, there are great prospects for applying in heat energy storage and thermal management. However, the commonly used solid-liquid phase change materials are prone to leakage as the phase change process …
The combination of reduced graphene oxide/cellulose sodium aerogel (rGCA) and lauric acid/myristic acid binary eutectic phase change gel (LMG) creates a composite phase change material that possesses outstanding photothermal conversion capabilities, electro-thermal conversion capabilities, energy storage capabilities, and …
Ion hydrogels are expected to play a crucial role in self-powering flexible wearable electrical devices as they provide excellent power output stability and are easy …
Comprehensive lists of most possible materials that may be used for latent heat storage are shown in Fig. 1(a–e), as reported by Abhat [4].Readers who are interested in such information are referred to the papers of Lorsch et al. [5], Lane et al. [6] and Humphries and Griggs [7] who have reported a large number of possible candidates for …
The hydrogels are made via incorporating CH 3 COONa·3H 2 O salt (SA) into polyacrylamide (PAM) aqueous networks to construct supersaturated and stimuli …
As a kind of inorganic phase change cold storage material, hydrated salt has been widely studied by scholars in recent years because of its high energy storage density and low cost compared with organic phase change cold storage materials [13, 14].As a typical hydrated salt, CaCl 2 ·6H 2 O (CCH) has a phase change temperature of …
@article{Sang2022StudiesOE, title={Studies of eutectic hydrated salt/polymer hydrogel composite as form-stable phase change material for building thermal energy storage}, author={Guochen Sang and Hao Zeng and Zhiqiang Guo and Hongzhi Cui and Yangkai Zhang and Xiaoling Cui and Lei Zhang and Weixiao Han}, …
Abstract. The use of a phase change materials (PCMs) is a very promising technology for thermal energy storage where it can absorb and release a large amount of latent heat during the phase transition process. The issues that have restricted the use of latent heat storage include the thermal stability of the storage materials and …
In this study, we aimed to fabricate a form-stable phase-change hydrogel (PCH) with excellent mechanical properties and heat-storage properties. Sodium alginate …
In this study, a novel eutectic hydrated salt/polymer hydrogel composite as form-stable phase change material (HP-FSPCM) suitable for building thermal energy storage was prepared using SCES as PCMs, 3 wt% borax as a nucleating agent, 8 wt% PAAS as a thickening agent and encapsulating material, and flake graphite as thermal …
One reason is that the presence of water and other components in the hydrogel reduces the proportion of phase change material in the hydrogel, and the suitable encapsulation rate is between 40% and 60%, which limits the energy storage capacity of the composite. ... Induced dipole force driven PEG/PPEGMA form-stable …
The crystallization of metastable liquid phase change materials releases stored energy as latent heat upon nucleation and may therefore provide a triggerable …
Phase change energy storage material with photo-curing, photo-thermal conversion, and self-cleaning performance via a two-layer structure ACS Appl Mater Interfaces, 14 ( 2022 ), pp. 57299 - 57310 CrossRef Google Scholar
Super-elastic phase change materials (SPCMs), as brand-novel smart materials, have a wide range of potential applications in stress induction, thermal energy storage and temperature control.
Latent heat storage using alloys as phase change materials (PCMs) is an attractive option for high-temperature thermal energy storage. Encapsulation of these PCMs is essential for their successful ...
Flexible phase-change materials (PCMs) have great potential applicability in thermal energy storage and temperature control. A binary composite mixture comprising polyethylene glycols of solid and liquid phases (PEG2000 and PEG400, respectively) was synthesized as a PCM base material. The PEG400 liquid phase was uniformly dispersed …
The phase-change microcapsules dispersed in the lower layer of the hydrogel can act as a latent heat-storage unit to store a great quantity of photothermal energy through melting phase change by the phase change material core. This imparts a consecutive evaporation capability to the developed hydrogel-based evaporator.
Novel strategies and supporting materials applied to shape-stabilize organic phase change materials for thermal energy storage–A review Appl. Energy, 235 ( 2019 ), pp. 846 - 873 View PDF View article View in Scopus Google Scholar