Highlights. Solid-solid phase change materials based on PEG and PAPI were prepared. The brief and concise method made the industrial applications of PCMs possible. The maximum latent heat of prepared PCMs reached 111.7 J/g. The prepared PCMs show the potential for thermal energy storage application. The prepared PCMs …
S-S phase change fibers with enhanced heat energy storage density have been successfully fabricated from coaxial wet spinning and subsequent polymerization-crosslinking. The resulting fibers showed core-sheath structures, high flexibility and good tensile properties, with an elongation of 629.1 % and stress at break of 3.8 MPa.
Here in, we propose a new approach for designing SS-PCM with T t in the range of 20–26 °C and energy storage capacity of 100 J/g as shown in Fig. 1 spired by the fact that addition of impurity will lower melting temperature of pure solid, we utilized copolymerization method to introduce the impurities in polymeric SS-PCM for tuning T …
The influence of hydrogen bonding on N-methyldiethanolamine-extended polyurethane solid–solid phase change materials for energy storage Hongwei Cao,a Feixuanyu Qi,b Ruowang Liu,*b Fengtao Wang,a Caixia Zhang,a Xiaoni Zhang,a Yuye Chaib and …
Solid–solid PCMs, as promising alternatives to solid–liquid PCMs, are gaining much attention toward practical thermal-energy storage (TES) owing to their inimitable advantages such as solid-state processing, negligible volume change during phase transition, no contamination, and long cyclic life.
In recent years, graphene has been introduced into phase change materials (PCMs) to improve thermal conductivity to enhance the heat transfer efficiency in thermal energy …
Solid–solid phase change materials (SSPCMs) are considered among the most promising candidates for thermal energy storage and management. However, the application of SSPCMs is consistently hindered by the canonical trade-off between high TES capacity and mechanical robustness.
The preparation of phase change materials (PCMs) with high energy storage, thermal conductivity, and photothermal conversion capability is essential for improving solar energy conversion and storage. In this study, graphene oxide (GO) was incorporated into polyurethane (PU) prepared from 4,4′-diphenylmethane diissyanate (MDI) and …
In recent years, graphene has been introduced into phase change materials (PCMs) to improve thermal conductivity to enhance the heat transfer efficiency in thermal energy storage. However, graphenes tend to aggregate in PCMs, leading to the low thermal conductivity efficient enhancement (TCEE), anisotropic thermal conductivity, and …
Thermal energy storage and release in aliph. phase-change materials are actively controlled by adding azobenzene-based photo-switches. UV activation of the additives induces supercooling of …
The application of energy storage with phase change is not limited to solar energy heating and cooling but has also been considered in other applications as discussed in the following sections. ... A solid–solid phase change method of heat storage can be a good replacement for the solid–liquid phase change in some applications. They can be ...
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. Developing pure or composite PCMs …
Phase change materials (PCM) have been widely used in thermal energy storage fields. As a kind of important PCMs, solid-solid PCMs possess unique advantages of low subcooling, low volume expansion, good thermal stability, suitable latent heat, and thermal conductivity, and have attracted great attention in recent years.
The high thermal storage density of phase change materials (PCMs) has attracted considerable attention in solar energy applications. However, the practicality of PCMs is often limited by the problems of leakage, poor solar-thermal conversion capability, and low thermal conductivity, resulting in low-efficiency solar energy storage.
Linear polyurethane (PU) ionomers were synthesized as solid–solid phase changing materials (PCMs) for thermal energy storage. Poly(ethylene glycol)s (PEGs) with 6000 and 10,000 g/mol number average molecular weight were used as latent heat storage materials, and 4,4-diphenylmethane diisocyanate (MDI), N …
Solid-solid phase change materials (SSPCMs) with small volume change and leak-proof characteristic during the whole process of phase change play a vital role in development of PCM for thermal energy storage (TES). …
Phase change materials (PCM) have been widely used in thermal energy storage fields. As a kind of important PCMs, solid-solid PCMs possess unique advantages of low subcooling, low volume expansion, good thermal stability, suitable latent heat, and thermal conductivity, and have attracted great attention in recent years.
Solid–solid phase change materials (SSPCMs) are considered among the most promising candidates for thermal energy storage and management. However, the application of SSPCMs is consistently hindered by the canonical trade-off between high TES capacity and mechanical robustness.
A series of polystyrene-graft-PEG 6000 copolymers were synthesized as new kinds of polymeric solid–solid phase change materials (SSPCMs).The synthesized SSPCMs storage latent heat as the soft segments PEG 6000 of the copolymers transform from crystalline phase to amorphous phase and therefore they can keep its solid state …
The composite films are hopeful solid-solid phase-change materials for energy storage. Abstract. ... The T-CNF/PEO composite films are therefore regarded as new solid–solid phase-change materials for energy storage with high dimensional stability with superior optical and mechanical properties compared with those of previously …
Polyurethane polymers (PUs) have been synthesized as solid–solid phase change materials for thermal energy storage using three different kinds of diisocyanate molecules and polyethylene glycols (PEGs) at three different molecular weights. PEGs and their derivatives are usually used as phase change units in polymeric solid–solid phase …
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.
The selection of phase change materials (PCMs) as energy storage media is an effective way to achieve practical utilization to solve the uncontinuity and unstability of solar energy. Solid-solid PCMs (SS-PCMs) have attracted attention due to their advantages of stable shape, no phase separation, and no corrosion.
Review on solid–solid phase change materials for thermal energy storage: Molecular structure and thermal properties Applied Thermal Engineering, 127 ( 2017 ), pp. 1427 - 1441 View PDF View article View in Scopus Google Scholar
Phase change fibers have attracted much attention for temperature regulation, heat storage and solar energy harvesting [[4], [5], [6]], and the fibers are usually prepared from PCMs with a solid-liquid phase-transition (S-L PCMs) or a solid-solid phase-transition (S
Phase‐change materials (PCMs) offer tremendous potential to store thermal energy during reversible phase transitions for state‐of‐the‐art applications. The practicality of these materials is adversely restricted by volume expansion, phase segregation, and leakage problems associated with conventional solid‐liquid PCMs. …
Synthesis of solid–solid phase change material for thermal energy storage by crosslinking of polyethylene glycol with poly (glycidyl methacrylate) Sol Energy, 85 ( 2011 ), pp. 2679 - 2685 View PDF View article View in Scopus Google Scholar