In-situ deposition preparation of n-octadecane@Silica@Polydopamine-doped polypyrrole microcapsules for photothermal conversion and thermal energy storage of full-spectrum solar radiation

Li, Pan; Zou, Fangwei; Wang, Xianfeng; Alebeid, Omer Kamal; Zhao, Tao

doi:10.1016/j.solener.2022.05.052

Cited by 14 publications

(3 citation statements)

References 51 publications

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“…For example, the peaks at 2924 and 2854 cm −1 are corresponding to the stretching vibration of the C−H bond in −CH 2 and −CH 3 groups, respectively. 39,40 Besides, the peaks at 1060 and 452 cm −1 are, respectively, ascribed to the asymmetric and symmetric Si−O−Si stretching vibrations of the SiO 2 shell. 41,42 The crystal structure of the SPCM was investigated by X-ray diffraction (XRD) analysis.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…It is noteworthy that the characteristic peaks corresponding to n-OD and SiO 2 spectra both appear in the SPCM spectrum, indicating successful encapsulation of n-OD within the SiO 2 shell. For example, the peaks at 2924 and 2854 cm –1 are corresponding to the stretching vibration of the C–H bond in −CH 2 and −CH 3 groups, respectively. , Besides, the peaks at 1060 and 452 cm –1 are, respectively, ascribed to the asymmetric and symmetric Si–O–Si stretching vibrations of the SiO 2 shell. , The crystal structure of the SPCM was investigated by X-ray diffraction (XRD) analysis. As shown in Figure C, a flat peak centered at ∼23° can be observed from the pattern of SiO 2 , indicating that the SiO 2 shell is amorphous.…”

Section: Resultsmentioning

confidence: 99%

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Phase Change Material-Based Film toward Enhanced Radiative Cooling and Mitigation of Overcooling

Xiang,

Xu,

et al. 2023

ACS Appl. Polym. Mater.

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Daytime radiative cooling has generated an escalating level of interest as it offers zero-energy cooling even under strong solar illumination. However, two issues remain unresolved regarding the daytime radiative cooling. One is to further improve the cooling effect at high temperatures and the other is to suppress overcooling at low temperatures. Herein, we approached an effective design of a radiative cooling composite enhanced by a phase change material (PCM). The incorporation of the PCM increases the subambient cooling temperature of the composite by 2 °C under a solar intensity of ∼850 W m −2 , resulting in a final cooling effect of 6.8 °C, which demonstrates the synergistic enhancement of the radiative cooling in hot conditions. Furthermore, the incorporation of the PCM slows down the cooling rate of the composite when the temperature drops below the crystallization point, indicating a great potential to mitigate overcooling in cold environments. Additionally, the resulting composite exhibits excellent thermal and shape stabilities. Overall, the proposed PCM-enhanced radiative cooling composite demonstrates a significant advance toward the radiative cooling regulation, which holds promise for broadening its application in various practical environments.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Phase Change Material-Based Film toward Enhanced Radiative Cooling and Mitigation of Overcooling

Xiang,

Xu,

et al. 2023

ACS Appl. Polym. Mater.

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“…When the PPy content was 1.91 wt%, the photothermal efficiency of MEPCMs was as high as 94.03%. Li et al [ 100 ] prepared MEPCMs by using n ‐octadecane as PCMs and SiO 2 /PDA/PPy as the shell. Both PDA and PPy have good light‐absorption ability, and the combination of PDA and PPy can help to further improve the photothermal conversion of MEPCMs.…”

Section: Strategies For Improving the Photothermal Conversion Perform...mentioning

confidence: 99%

A Review on Microencapsulated Phase‐Change Materials: Preparation, Photothermal Conversion Performance, Energy Storage, and Application

Wang,

Yan,

Meng

et al. 2023

Solar RRL

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The leakage‐prone disadvantage of pure phase change materials (PCMs) has hampered their practical application, and the encapsulation technology of PCMs has been favored for its ability to mitigate leakage. Combining large solar reserves with energy storage technology can increase the utilization of renewable energy and broaden the application of microencapsulated phase change materials (MEPCMs) in the field of solar energy. First, the fabrication technologies of MEPCMs, which include physical, chemical, and physical–chemical methods, have been comprehensively elaborated in this article. Second, the characteristics of different methods are also summarized. Then, the influences of MEPCMs properties on their thermal storage capacity have been clarified. This work shows the supercooling, phase separation, mechanical properties, encapsulation efficiency, and photothermal conversion performance of MEPCMs. Modification of MEPCMs by metal materials and their oxides, carbon, and semiconductor materials to improve the light absorption capacity. In addition, two‐dimensional materials such as MXene have been widely used to improve the photothermal properties of MEPCMs. Finally, the applications of MEPCMs in the construction, slurry, textile, and food industries are discussed. This work can provide some useful guidance for the optimization strategies of the photothermal conversion performance and practical applications of MEPCMs.

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Encapsulation technique and application progress of polydopamine-based stimulus-responsive microcapsules

Zhao,

Wang,

Sun

et al. 2024

Chemical Engineering Journal

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In-situ deposition preparation of n-octadecane@Silica@Polydopamine-doped polypyrrole microcapsules for photothermal conversion and thermal energy storage of full-spectrum solar radiation

Cited by 14 publications

References 51 publications

Phase Change Material-Based Film toward Enhanced Radiative Cooling and Mitigation of Overcooling

Phase Change Material-Based Film toward Enhanced Radiative Cooling and Mitigation of Overcooling

A Review on Microencapsulated Phase‐Change Materials: Preparation, Photothermal Conversion Performance, Energy Storage, and Application

Encapsulation technique and application progress of polydopamine-based stimulus-responsive microcapsules

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