7-days of FREE Audio papers, translation & more with Prime
7-days of FREE Prime access
7-days of FREE Audio papers, translation & more with Prime
7-days of FREE Prime access
https://doi.org/10.1016/j.solmat.2021.111546
Copy DOIPublication Date: Mar 1, 2022 | |
Citations: 16 |
The excellent thermal storage and photothermal conversion performance are of significance for the microencapsulated phase change materials (MicroPCMs) in solar energy storage applications. Herein, the hydroxylated carbon nanotubes (HO-CNTs) modified MicroPCMs with n-hexadecanol core and melamine-formaldehyde (MF) resin shell were successfully fabricated via in-situ polymerization, where the effect of dosing amounts of HO-CNTs on the thermal properties of MicroPCMs was investigated. The micromorphology shows that the introduction of HO-CNTs has little influence on the spherical structure of MicroPCMs with compact shell. At the 0.2 wt% dosage of HO-CNTs, the melting temperature and latent heat of MicroPCMs are 51.5 °C and 181.5 J g −1 , respectively, and the energy storage efficiency of n-hexadecanol is calculated to be 75.25%. It is noteworthy that with the increase of HO-CNTs dosage, the prepared MicroPCMs exhibit prominent improvement in the thermal conductivity and photothermal conversion performance, being conducive to enhancing photothermal storage efficiency. The thermal conductivity of MicroPCMs is as high as 0.3598 W m −1 K −1 with the dosing amount of 0.6 wt% HO-CNTs. Additionally, all the modified MicroPCMs possess distinguished thermal reliability during the 500 thermal cycles. The results suggest that the developed MicroPCMs with high thermal storage capacity and excellent photothermal conversion performance have a great potential application in the direct absorption solar collector system (DASC) for solar energy storage. • The core-shell MicroPCMs modified by HO-CNTs were fabricated via in-situ polymerization. • The latent heat of modified McroPCMs is as high as 181.5 J g −1 with the content of 0.2 wt% HO-CNTs. • The modified MicroPCMs obtain a significant enhancement in thermal conductivity and photothermal conversion performance. • The as-prepared MicroPCMs possess excellent thermal reliability during the 500 phase change cycles.
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.