Photothermal phase change material microcapsules via cellulose ...
The temperature of PCM@CNC/rGO/PDA/MF microcapsule slurries (15wt.%) can reach 73°C after light irradiation at 1 W cm−2. Therefore, photothermal PCM@CNC/rGO/PDA/MF microcapsules are promising for solar energy harvesting, thermal energy storage, and release in various applications, such as energy-efficient buildings …
Principles and applications of photothermal catalysis
The photothermal effect has been widely observed in various photothermal materials, such as inorganic materials (e.g., plasmonic metals and semiconductors) 20, 21 and organic materials (e.g., polymers) 22, which convert incident light into thermal energy (heat) under irradiation.A photothermal process is a direct …
Low photothermal conversion efficiency and difficulty in thermal energy storage are still obstacles during the solar energy utilization and conversion [9]. In order to solve the above problems, finding a suitable thermal storage material with photothermal conversion capability for long-term solar thermal energy storage has become a research ...
Fatty acid eutectics embedded in guar gum/graphene …
Fatty acid eutectics embedded in guar gum/graphene oxide/boron nitride carbon aerogels for highly efficient thermal energy storage and improved photothermal conversion efficiency ... The photothermal energy conversion and absorption ability of the composite PCMs were also investigated by exposing the samples to solar radiation and …
Temperature‐Responsive Thermochromic Phase Change Materials with Tunable Photothermal Conversion Efficiency Toward Solar Energy Storage …
There are many reports in the literatures on the use of phase change materials (PCMs) with photothermal conversion to store and harness solar energy. However, few works have reported intelligent PCMs with thermochromic capabilities that can controllably adjust ...
Boosting photothermal conversion and energy storage in MXene …
The areal capacitance, energy density and solar-enhanced energy storage of the quasi-solid-state FSC were also investigated. The high-performance MSW is expected to leverage renewable NW and sustainable solar energy to enhance capacitance, which exhibits a novel design concept for eco-friendly flexible energy storage units. 2. Results and ...
Solar photothermal energy-storage technology based on phase change materials (PCMs) is considered to be a promising way to harness solar energy owing to its relatively high efficiency and low cost. ... With a considerably high photothermal storage efficiency of 92.5%, this type of composite PCMs exhibited great potential for …
A novel phase change materials used for direct photothermal …
Hence, combining the heat transfer process of NPT-PCMs1 block under solar irradiation (Fig. 12) and the existing calculation methods of energy conversion efficiency (Table 4), the intrinsic photothermal conversion efficiency (η P) is defined and the effective thermal storage efficiency (η T) is creatively proposed to respectively …
Cellulose nanofiber/melanin hybrid aerogel supported phase change materials with improved photothermal conversion efficiency and superior energy ...
Organic phase change materials (PCMs) have been widely applied in thermal energy storage fields due to their good structural stability, high energy storage density, adjustable phase change temperature and non-toxicity. However, the poor solar-thermal conversion performance and structure stability restrict the large-scale application …
Pristine organic phase change materials (PCMs) suffer from liquid leakage and weak solar absorption in solar energy utilization. To address these deficiencies, we prepared polypyrrole (PPy)-coated expanded graphite (EG)-based composite PCMs for photothermal conversion and storage through chemical polymerization and physical …
Sustainable Porous Scaffolds with Retained Lignin as An …
As a result, the photothermal energy storage efficiency of POW-B/PEG and POW-S/PEG are ≈ 86.7% and 79.8% (Figure 4c), respectively. The POW/PEG composites also show great potential in the thermal regulation of buildings. ... Through the process of photothermal energy storage and release, the POW/PEG could keep the …
Elevating the Photothermal Conversion Efficiency of Phase …
To alleviate the predicament of resource shortage and environmental pollution, efficiently using abundant solar energy is a great challenge. Herein, we prepared unique photothermal conversion phase-change materials, namely, CNT@PCMs, by introducing carbon nanotubes (CNTs) used as photothermal conversion materials into …
The experimental results show that the latent heat of the PCM can reach 124.2 J/g, the water contact angle is 144°, the photothermal conversion efficiency reaches 75%, and it has significant …
Design and application of polyurethane-polydopamine/Ag double …
The photothermal properties and energy storage of microcapsules and coated fabrics were studied by an infrared thermal imager (FOTRIC 220S). The outdoor photothermal properties and energy storage of the coated fabric were studied by the FLIR E8 thermal camera and Xiaomi 13 mobile phone shooting. 3. Results and discussion3.1.
Enhancing solar photothermal conversion and energy storage …
The photothermal conversion efficiency (γ) is calculated as the ratio of the latent heat-storage energy to the solar irradiation energy throughout the phase-change process as follows [10]: (4) γ (%) = m Δ H m A P Δ t × 100 where m is the mass of the samples, Δ H m is the melting enthalpy of the samples, Δ t is the time for the sample to ...
Shi et al. [19] prepared a series of wood-based PCCs for energy storage with high thermal conductivity and high photothermal conversion efficiency utilizing BN to modify balsa wood after delignification, followed by capping with polypyrrole (PPy) and vacuum encapsulation with PEG.
A study on novel dual-functional photothermal material for high …
Strategic design enabled the seamless amalgamation of photothermal conversion and heat transportation during solar-energy storage, enhancing the solar-heat-storage efficiency of the fabricated system.
Synergistic enhancement of photothermal energy storage …
Phase change materials (PCMs) are a crucial focus of research in the field of photothermal energy storage. However, due to their inherently low photothermal conversion efficiency, traditional PCMs absorb solar energy scarcely. The photothermal conversion ability of PCMs are usually enhanced by incorporating photothermal …
Superhydrophobic multi-shell hollow microsphere confined phase change materials for solar photothermal conversion and energy storage …
The development of efficient solar photothermal conversion and energy storage composite (SPCSC) is of great significance in solving the imbalance between supply and demand of solar energy utilization in time …
Temperature-Responsive Thermochromic Phase Change Materials with Tunable Photothermal Conversion Efficiency Toward Solar Energy Storage. Anqian Yuan, Anqian Yuan. ... few works have reported intelligent PCMs with thermochromic capabilities that can controllably adjust their photothermal conversion efficiency to …
Photothermal materials: A key platform enabling highly efficient water ...
Unlike the relatively expensive noble metals mentioned above, various selective blacks such as black chromium, copper or black nickel with enhanced photothermal solar energy conversion efficiency but low cost have been developed as solar selective coatings for heating fluids [39], [40], [41]. These black coatings for solar …
A study on novel dual-functional photothermal material for high-efficient solar energy harvesting and storage …
In this study, the design strategy to fabricate the innovative dual-functional photothermal storage materials and the high-efficient 3D-PCB (with a wide range of potential applications) could guide the design of next …
The photothermal energy conversion efficiency (η) is calculated according to Eq. (1). Here, m represents the sample mass, ... In other words, MSHS@ODA not only realizes efficient storage of solar energy, but also provides precise thermal management of ambient heat. By virtue of its excellent solar thermal conversion efficiency, outstanding ...
Flexible textiles with polypyrrole deposited phase change microcapsules ...
1. Introduction. Energy shortage and environmental pollution have become a daunting issue as the demands and overuse of fossil fuels keeps growing [1, 2] order to mitigate the mismatch between supply and demand of energy, thermal energy storage (TES) is often used for waste heat recovery and energy storage [3] reversible …
Photothermal Nanomaterials: A Powerful Light-to-Heat …
The investigation of photothermal materials with broadband absorption is beneficial for the utilization of renewable solar energy, while the engineering of materials with efficient heat generation …
Synergistic enhancement of photothermal energy storage …
Phase change materials (PCMs) are a crucial focus of research in the field of photothermal energy storage. However, due to their inherently low photothermal …
Weavable coaxial phase change fibers concentrating thermal energy ...
1. Introduction. With the rapid development of human society and the continuous improvement of people''s living standards, energy shortage has become an increasing serious problem facing the world [1], [2].At present, the energy consumption used for maintaining the human body thermal comfort, such as air conditioner, electric radiator …
Photothermal materials with energy-storage properties provide an energy ...
All-weather, high-efficiency solar photothermal anti-icing/deicing systems are of great importance for solving the problem of ice accumulation on outdoor equipm. ... Photothermal materials with energy-storage properties provide an energy-saving design for highly efficient anti-icing/deicing applications
Organic phase change materials (PCMs) have been widely applied in thermal energy storage fields due to their good structural stability, high energy storage density, adjustable phase change temperature and non-toxicity. However, the poor solar-thermal conversion performance and structure stability restrict the large-scale application …
Phase change nanocapsules incorporated with nanodiamonds for efficient ...
Phase change nanocapsules exhibit significant potential in harnessing photothermal energy to address the ever-growing energy demand; however, their application is restricted by limited solar absorption capacity and low thermal conductivity. In this study, nanodiamonds (NDs) were firstly incorporated with phase change nanocapsules to solve …
Thermal and photo/electro-thermal conversion characteristics of high energy storage …
In the actual energy storage scenario, excessive supercooling degree will cause delayed and inefficient release of thermal energy, reducing energy utilization efficiency [56]. Observing Fig. 4 (c), the incorporation of EG enables significantly improve the supercooling degree of PEG, because the high specific surface area of EG can bring …
However, current researches on the photothermal effect of MoS 2 are focusing on biomedical applications, and researches on energy harvesting and storage were very limited, specifically in thermal energy conversion and storage [17]. Developing high-performance MoS 2-based photothermal PCMs for thermal storage remains a …
In this review, we comprehensively summarized the state-of-the-art photothermal applications for solar energy conversion, including photothermal water evaporation and desalination, photothermal …
1. Introduction The global energy crisis has also arisen as a result of over-exploitation of fossil resources, and it is urgent to take measures to address the problem of gradual depletion of fossil fuels and low energy efficiency. To …
