Preparation and thermal performance of ternary carbonates/silica microcomposites as phase change materials

Mo, Songping; Mo, Bingzhong; Wu, Fan; Jia, Lisi; Chen, Ying

doi:10.1007/s10971-021-05563-5

Cited by 9 publications

(8 citation statements)

References 27 publications

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“…Mo et al [208] used silica to encapsulate inorganic PCM, ternary carbonates (lithium carbonate, sodium carbonate, potassium carbonate), and investigate the differences of obtained microcapsules produced with and without heating. Fig.…”

Section: Sol-gel Methodsmentioning

confidence: 99%

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Encapsulation methods for phase change materials – A critical review

Huang

Stonehouse

Abeykoon

2023

International Journal of Heat and Mass Transfer

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Section: Sol-gel Methodsmentioning

confidence: 99%

“…127. The fabrication process with and without heating treatment [208] . Some works using the sol-gel method for encapsulation developed by previous researchers are included in Table 13 .…”

Section: Sol-gel Methodsmentioning

confidence: 99%

Encapsulation methods for phase change materials – A critical review

Huang

Stonehouse

Abeykoon

2023

International Journal of Heat and Mass Transfer

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“…By creating nanodispersion polyethylene glycol (PEG)/polymethyl methacrylate (PMMA)/GnPs composites by Zhang et al, the thermal and electrical properties of FSPCMs as well as their effects on morphology, structure, and form-stable performance were investigated [50]. Ternary lithium, sodium, and potassium carbonates/silica microcomposites as phase change materials were obtained by the sol-gel coating method by Mo et al It was concluded that microcomposites have an important place in high-temperature thermal energy storage [51]. In order to produce a new type of energy storage material by Zheng et al, hydroxylated multi-walled carbon nanotubes (MWCNTs) of different mass were incorporated into the PEG1500•CaCl2 form-stable phase change material.…”

Section: Thermal Conductivitymentioning

confidence: 99%

Thermal Conductivity and Phase Change Properties of Boron Nitride-Lead Oxide Nanoparticles doped Polymer Nanocomposites

Cinan

Baskan

Erol

et al. 2022

Preprint

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The thermally conductive phase change materials (PCMs) were produced using the crosslinked Poly (Styrene-block-Ethylene Glycol Di Methyl Methacrylate) (PS-PEG DM) copolymer by employing the boron nitride (BN)/lead oxide (PbO) nanoparticles. DSC and TGA methods were used to research the phase transition temperatures (melting and crystallization temperatures: Tm and Tc), the phase change enthalpies (melting and crystallization enthalpies: ∆Hm and ∆Hc). The thermal conductivities (λ) of the PS-PEG/BN/PbO PCM nanocomposites were investigated. The ∆Hm and λ value of PS-PEG/BN/PbO PCM nanocomposite containing BN 13 wt%, PbO 60.90 wt%, and PS-PEG 26.10 wt% was determined to be 27.6 Jg− 1 and 18.874 W/(mK). From DSC measurements, Tm and Tc of PS-PEG PCM nanocomposites were found to vary between 57.8°C-205°C, 4.7°C-188.6°C, respectively. The crystallization fraction (Fc) values of PS-PEG (1000) and PS-PEG (1500) copolymers are 0.032–0.034; 0.063, respectively. XRD results of the polymers, the PCM nanocomposites showed that the sharp diffraction peaks at 17.00° and 25.28° of PS-PEG copolymer belonged to the PEG part. When nanoparticles were added to the polymers, SEM and TEM images confirmed that the PCM nanocomposites have a grain, spherical shape, and homogeneous distribution of the nanoparticles. Since these new nanocomposites, whose successful results we have presented as radiation shields in another study, show remarkable thermal conductivity performance, they can be used as conductive polymer nanocomposites for effective heat dissipation in heat exchangers, power electronics, electric motors, generators, communication, and lighting equipment. At the same time, according to our results, PCM nanocomposites can be considered as heat storage materials in the energy storage system.

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“…The utilization of microencapsulated molten salts not only prevents leakage, but also enhances the thermal properties performance of the PCM. However, only a few studies have been reported on the microencapsulation of molten salts. − These studies mainly focused on developing new methods for the microencapsulation of molten salts since the conventional methods are not applicable to molten salts. As an example, Zhang et al reported the preparation of KNO 3 @silica microcapsules using a water-limited sol–gel silica encapsulation method for high-temperature applications.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, Pethurajan et al synthesized microcapsules of solar salt, which exhibited no leakage in leak tests, while exhibiting a 51% increase in thermal conductivity and a 10.5% reduction in supercooling degree. Molten salts were microencapsulated with metal oxide shells including SiO 2 , − TiO 2 , ZnO, and perhydropolysilazane (PHPS) . Microencapsulation methods were developed and demonstrated by studying the morphology, chemical composition, phase change properties (i.e., phase change temperature and latent heat), and thermal reliability of the microcapsules in most of these papers.…”

Section: Introductionmentioning

confidence: 99%

Improving the Thermal and Photothermal Performances of MXene-Doped Microencapsulated Molten Salts for Medium-Temperature Solar Thermal Energy Storage

Xiao

et al. 2023

Energy Fuels

Self Cite

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Molten salts are widely used as thermal energy storage materials for solar thermal applications, but they suffer from low photothermal conversion efficiency and potential leakage and corrosion issues. In this paper, MXene doping was proposed to improve the thermal properties and photothermal conversion efficiency of microencapsulated molten salts. MXene nanomaterials, which have excellent thermal conductivity and photothermal conversion efficiency, were used to dope the molten salts. The results tested by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) indicate that MXene was well doped in the molten salt microcapsules. Fourier transformation infrared (FT-IR) spectroscopy was used to confirm that the microencapsulation of the molten salt by silica is a physical action. The results of X-ray diffractometry (XRD) show that the crystal structure of the molten salt maintained stability. The results obtained from the Hot Disk thermal constant analyzer and photothermal conversion experiments showed that thermal conductivity and photothermal conversion efficiency of the MXene-doped microcapsules were increased by 156.2% and 169.4%, respectively. The differential scanning calorimeter (DSC) results indicated that the MXene-doped microcapsules had a reduction of 49.6% in the supercooling degree. The thermal reliability of the MXene-doped microcapsules was 94.0% after 50 thermal cycles. This approach provides a promising solution for improving the thermal properties and photothermal conversion efficiency of microencapsulated molten salts for medium-temperature solar thermal energy storage.

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Preparation and thermal performance of ternary carbonates/silica microcomposites as phase change materials

Cited by 9 publications

References 27 publications

Encapsulation methods for phase change materials – A critical review

Encapsulation methods for phase change materials – A critical review

Thermal Conductivity and Phase Change Properties of Boron Nitride-Lead Oxide Nanoparticles doped Polymer Nanocomposites

Improving the Thermal and Photothermal Performances of MXene-Doped Microencapsulated Molten Salts for Medium-Temperature Solar Thermal Energy Storage

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