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Updated: May 23, 2025

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation
Published on: February 5, 2020
A photothermal energy storage phase change material with high stability and enthalpy
Shenghua Xiong1,2, Yanlong Shi1,2, Changhui Liu1,2
1College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China Guanghan 618307 China yunyun1990@cafuc.edu.cn xsh@my.swjtu.edu.cn.
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 (ΔT m) 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.
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