Nano-Ag modified bio-based loofah foam/polyethylene glycol composite phase change materials with higher photo-thermal conversion efficiency and thermal conductivity

Water-resistant gum-based phase change composite for thermo-regulating insulation packaging

“…Thus, GT only served as a supporting matrix and did not restrict the normal phase change process of PEG in the composite. Although both T m and T c did not change significantly, the corresponding enthalpies were reduced proportionally to the decrease in the PEG portion, likewise with the results reported for PEG-based phase change materials [10,60]. For example, the melting and crystallization enthalpies decreased from 160 J g −1 and 152 J g −1 for the composition with 90 % PEG to 106.9 J g −1 and 104.8 J g −1 for the formulation with 70 % PEG.…”

Minireview on Design of Flexible Composite Phase Change Materials to Various Energy Applications: Progresses and Perspectives

“…In the current thermal energy storage technology system, phase change energy storage technology (PCEST) can resolve the contradiction between energy supply and demand, meet the technical and economic requirements for projects and products, and improve energy utilization. − Phase change materials (PCMs) are the basis of PCEST, which can absorb or release heat (cold) from the environment during the phase change process. ,, Figure a–c shows the working principle of the PCMs for energy storage and release. PCMs can be integrated into phase change energy storage systems and are used widely in solar energy utilization, waste heat recovery and utilization, building energy conservation, the textile industry, and power peak regulation, , as shown in Figure d.…”

“…SS-CPCMs refer to the solid–liquid transition of the PCMs through a certain encapsulation technology, which can be expressed as a solid–solid phase change process on the macroscopic level to prevent irreversible damage caused by liquid leakage. ,, With the development of science and technology, the structures of systems and control components in these fields have become increasingly complex, sophisticated, and miniaturized. However, SS-CPCMs have strong rigidity that will cause brittle fractures under stress. , Hence, they often have poor contact with the surface of the controlled device because of the high rigidity, which results in an increase in contact thermal resistance and a decrease in thermal management efficiency. , In addition, the rigidity prevents the SS-CPCMs from being deformed and easily installed in complex or space-constrained systems and equipment. Therefore, the development of flexible composite PCMs that meet application requirements has enormous economic and social benefits that have attracted considerable attention.…”

Lipophilic Modified Hierarchical Multiporous rGO Aerogel-Based Organic Phase Change Materials for Effective Thermal Energy Storage

“…14 Currently, using porous materials as support structures is an effective solution to prepare morphologically stable composite PCMs by utilizing the capillary effect and surface tension of porous materials to adsorb the melted PCMs. The commonly used porous materials include mesoporous SiO 2 , 15 metal foam, 16 porous carbon, 17 aerogel, 18 and so on. Reduced graphene oxide (rGO) aerogel is one of the common porous materials with high specific area, high porosity, and ultralow density.…”