Issue 21, 2025, Issue in Progress

A photothermal energy storage phase change material with high stability and enthalpy

Abstract

In this study, CNT-BN-SA-1 composites were prepared by vacuum impregnation using stearic acid (SA) as a phase change material (PCM), multi-walled carbon nanotubes (CNT) and hexagonal boron nitride (BN) as support materials. According to the results of the thermal conductivity of CNT-BN-SA-1, the maximum thermal conductivity of CNT-BN-SA-1 is 0.83 W m K−1 when the CNT-BN content reaches 15 wt%. The surface morphology, heat storage capacity, and reliability of CNT-BN-SA-1 were systematically studied. The melting temperature (ΔTm) of CNT-BN-SA-1 is 51.83 °C and the latent calorific value is 143.5 ± 5.0 J g−1. CNT-BN-SA-1 still exhibits good latent heat capacity after 1000 heat treatment cycles, and its latent heat after cycling is 147.3 ± 5.0 J g−1. After a high temperature of 100 °C, CNT-BN-SA-1 still retains a good solid shape. The results show that CNT-BN-SA-1 has high latent heat, reliability, and excellent CSP energy storage capabilities. It has great application potential in the field of FSPCMs. This method provides a certain reference for the preparation of phase change composites.

Graphical abstract: A photothermal energy storage phase change material with high stability and enthalpy

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Article information

Article type
Paper
Submitted
27 Feb 2025
Accepted
13 May 2025
First published
21 May 2025
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2025,15, 17023-17030

A photothermal energy storage phase change material with high stability and enthalpy

S. Xiong, Y. Shi, C. Liu and Y. Yang, RSC Adv., 2025, 15, 17023 DOI: 10.1039/D5RA01422K

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