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Counterbalancing the interplay between electrochromism and energy …
Nowadays, metal anode-based ECDs have been developed due to their spontaneous color-switching functionality during the discharge process [24], [25], [26]; they possess both electrochromism and energy storage functions with the rudimentary EESD platform.Unfortunately, the incipient metal anode-based ECDs utilize aluminum (Al) as …
Flexible phase-change composite films for infrared ...
1. Introduction. Solid-liquid phase-change materials (PCMs) are a type of latent heat-storage material. They can absorb and store a large quantity of thermal energy from different heat sources, such as solar and waste heat, and release it in a small range of temperature fluctuation through reversible solid-liquid phase transitions [1, 2] ch a …
Enhanced properties of diatomite-based composite phase change materials ...
Latent heat thermal energy storage (LHTES), incorporated composite phase change material (PCM), has been recognized as the most promising method [17, 18]. LHTES is able to shift from peak to off-peak periods during the period of energy consumption, adjusting the contradiction between energy supply and demand [ [19], [20] …
High Solar Energy Absorption and Human Body Radiation
The phase-change energy is almost equivalent to the ΔH isom harvested from solar light, and the energy densities of Sn and Dn match those of present PCMs [36, 60,61,62]. Integrating the ΔH PC and ΔH isom in Sn series, the total energy storage (ΔH total) is up to 240–271 J g −1 (Table 1). However, the MOST and PCM materials cannot ...
Effect of porosity of conducting matrix on a phase change energy ...
It can be seen that the wax appeared in light color initially when in solid state, then a melted portion (darker in color) started to emerge near and above the inner tube and gradually developed. ... Review on thermal energy storage with phase change materials and applications. Renew. Sustain. Energy Rev., 13 (2009), pp. 318-345. View …
Preparation of phase change microcapsules with high thermal storage …
The color change also exhibited the same ellipse shape and was basically consistent with the temperature change in infrared thermography. This indicated that the phase change heat storage of n-eicosane could be determined more clearly, easily and intuitively by the color change of this MCPM. Download : Download high-res image …
Hierarchical porous hollow carbon spheres derived from …
Among the systems of thermal energy storage, phase change materials (PCMs) have been recognized as a perfect medium in heat storage systems due to their large latent heat storage [6, 7]. Moreover, the existence of solid-liquid phase-transition temperature can realize the control of temperature [ 8, 9 ].
High-energy storage graphene oxide modified phase change …
In order to ensure a safe, consistent, inexpensive and viable energy system, energy conversion efficiency is crucial. Efficient thermal energy use and storage is a major area of sustainable energy and technological application. For thermal energy storage, the best storage components are phase change materials (PCM).
Thermochromic microencapsulated phase change materials for cold energy …
The TCMs are composed of PCMs, color former and color developer. The micro-addition of color former and color developer rarely affects the energy storage of PCMs [9]. According to literature, most TC-MPCMs exhibit phase transition temperatures between 25 °C and 45 °C [10]. Studies on low-temperature TC-MPCMs are scarce and …
High-energy and light-actuated phase change composite for solar energy …
Herein, we design a class of optimized long-chain AZO molecule-doped organic phase change composites (PCC) for light-operated storage and controllable release (Fig. 1).Long-chain AZO with low cost tetradecanoate was synthesized to install a new energy barrier in organic PCMs system and generate a supercooling in liquid-phase …
Fluorescent thermochromic wood-based composite phase change …
1. Introduction. Solar energy is considered as the most prospective and plenteous renewable energy resource on the earth. The efficient conversion and storage of solar energy are significant for improvement of the energy utilization and the realization of sustainable development [1], [2], [3], [4].Directly converting solar energy into heat is …
Flame-retardant wood-based composite phase change
1. Introduction. With the continuous increase of energy consumption and the deterioration of environmental pollution, solar energy is regarded as the most forward-looking renewable energy due to its ideal characteristics (green sustainability, etc.), which can be widely used in various fields [[1], [2], [3], [4]].However, the practical utilization of solar energy has …
Biomass carbon aerogels based shape-stable phase change composites …
The extensive absorption of HDA/r-CA and HDA/s-CA in the UV–vis–NIR range is of great significance for light collection. The thermal energy storage of composite phase change materials can be realized by light-to-thermal conversion. These results are consistent with the appearance of HDA (white), HDA/r-CA, and HDA/s-CA composites …
Processing wood into a phase change material with high solar …
The final samples were named as PGMA-Wood. The schematic diagram of phase change energy storage wood synthesis is shown in Fig. 1. Download : Download high-res image (519KB ... The color in the picture represents the surface temperature of the wood. ... which is attributed to the conversion of light energy into internal energy by the …
Performance optimization of phase change energy storage …
The optimization indexes of the phase change energy storage systems in each climate zone under the full-load operation strategy are shown in Fig. 9. As can be seen from the figure, the energy savings of the phase change energy storage CCHP systems in all five cities are obtained under the full-load operation strategy.
Hybrid network structure of boron nitride and graphene
Light-to-electric energy conversion and storage. The light-to-electric energy conversion was performed using a CEL-HXUV300 xenon lamp (CEAULIGHT, China) with an AM 1.5 filter, a CEL-NP2000 optical power meter (CEAULIGHT, China) and a commercial Seebeck thermoelectric device at room temperature (∼ 26 °C), and a …
Aligned channel Gelatin@nanoGraphite aerogel supported form …
Thermal energy storage is an effective way to alleviate the mismatch between thermal energy supply and demand in terms of time, intensity, and location, providing a path for high-efficiency energy saving and efficient use of solar energy [9, 10]. Phase change materials (PCMs) are used as thermal energy storage materials.
Full-wood photoluminescent and photothermic materials for …
In summary, a full-wood photoluminescent and photothermic material with delignified wood as supporting material, CQDs derived from the removed lignin as backfill fluorescent material, and PEG as phase change materials is reported. Compare with other CQDs excited by UV light, the CQDs exhibit two emission peaks at 650 and 710 …
Self-luminous wood composite for both thermal and light energy storage ...
Herein, for the first time, we design a self-luminous wood composite for thermal energy and light energy storage, which is fabricated by impregnating PCMs/LAL mixture into delignified wood (Fig. 1 a).The self-luminous wood composite has large latent heat of fusion (146.7 J g-1), suitable phase change temperature (36.86 ℃), excellent …
Journal of Energy Storage
Abstract. High-temperature phase change materials (PCMs) have broad application prospects in areas such as power peak shaving, waste heat recycling, and solar thermal power generation. They address the need for clean energy and improved energy efficiency, which complies with the global "carbon peak" and "carbon neutral" strategy ...
Anti-self-discharge ultrathin all-inorganic electrochromic
Electrochromic asymmetric supercapacitors (EASs), incorporating electrochromic and energy storage into one platform, are extremely desirable for next-generation civilian portable and smart electronic devices. However, the crucial challenge of their fast self-discharge rate is often overlooked, although it plays an important role in …
Flexible MXene-coated melamine foam based phase change …
The light-to-thermal energy conversion, storage and release effects of MF@MXene/PEG PCM composites were tested by a simulated light system, which included a xenon lamp (HSX-F300, China) with a filter lens and an electronic thermocouple to measure the temperature variations of PCM composites.
Hybrid graphene aerogels/phase change material ...
Hybrid graphene aerogels (HGA) consisting of graphene oxide (GO) and graphene nanoplatelets (GNP) were prepared and introduced into polyethylene glycol (PEG) via vacuum impregnation, aiming at obtaining composite phase change materials (PCMs) with high thermal conductivity, outstanding shape-stabilization, high energy storage …
Solution-processable multicolor TiO2/polyaniline nanocomposite …
Based on this, an intelligent energy-storage indicator with energy level monitoring functionality was designed and constructed based on the multicolor TiO 2 /PANI composites, in which the energy-storage level could be visually detected in real-time by the different color variations. This work provided a feasible strategy for developing scalable ...
Organic-inorganic hybrid phase change materials with high energy ...
1. Introduction. The increasing demand for energy supply and environmental changes caused by the use of fossil fuels have stimulated the search for clean energy management systems with high efficiency [1].Solar energy is the fastest growing source and the most promising clean and renewable energy for alternative fossil fuels because of its …
Microencapsulation of Three-Component Thermochromic …
The digital camera photographs and the UV-Vis absorbance curves proved that color changed between dark blue and light blue depending upon the temperature change. Meanwhile, the produced microcapsules were proven for an excellent heat storage capacity for thermal energy storage owing to phase changing of the tetradecanol …
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