Issue 4, 2024

Preparation and properties of phase-change materials with enhanced radial thermal conductivities based on anisotropic graphene aerogels

Abstract

In this study, anisotropic graphene aerogels are prepared using the heat-flow method. Then, graphene aerogels with nanosilver particles are prepared via a silver mirror reaction. The aerogels are soaked in paraffin wax and the effects on the properties of the wax are investigated. The thermal conductivity of pure paraffin wax is 0.2553 W m−1 K−1. For the prepared PCM, the aerogel content was 0.92 vol%; this increases to 1.2234 W m−1 K−1, which corresponds to a thermal conductivity enhancement efficiency of 582%. The axial thermal conductivity is 1.4953 W m−1 K−1, which corresponds to a thermal conductivity enhancement efficiency of 746%. The graphene aerogels with the nanosilver particles show high phase-change efficiency. Owing to the significant improvements in the axial and thermal conductivities, the radial and axial heat transfer properties show good consistency suitable for practical applications.

Graphical abstract: Preparation and properties of phase-change materials with enhanced radial thermal conductivities based on anisotropic graphene aerogels

Article information

Article type
Paper
Submitted
08 Oct 2023
Accepted
10 Dec 2023
First published
16 Jan 2024
This article is Open Access
Creative Commons BY license

RSC Adv., 2024,14, 2763-2769

Preparation and properties of phase-change materials with enhanced radial thermal conductivities based on anisotropic graphene aerogels

J. Huang, X. Sun, B. Liang, Z. Li, D. Zheng, B. Yang, J. Xu and Y. Zhu, RSC Adv., 2024, 14, 2763 DOI: 10.1039/D3RA06835H

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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