Preparation of coconut oil/aluminum nitride/expanded graphite composite phase change materials with high thermal conductivity and stable shape for thermal energy storage

Chao Gao; Feng Jiang; Benguo Zhang; Mingchuan Shen; Yuguo Zhang

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Preparation of coconut oil/aluminum nitride/expanded graphite composite phase change materials with high thermal conductivity and stable shape for thermal energy storage

Updated：2026-01-06

- Preparation of coconut oil/aluminum nitride/expanded graphite composite phase change materials with high thermal conductivity and stable shape for thermal energy storage
- Chinese Journal of Chemical Engineering Vol. 76, Issue 12, Pages: 272-280(2024)
- Affiliations：
  
  1. School of Mechanical Engineering, Changshu Institute of Technology,Suzhou,China,215500
  2. School of Mechanical Engineering, Yancheng Institute of Technology,Yancheng,China,224051
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2024
- Accepted：
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Chao Gao, Feng Jiang, Benguo Zhang, Mingchuan Shen, Yuguo Zhang. Preparation of coconut oil/aluminum nitride/expanded graphite composite phase change materials with high thermal conductivity and stable shape for thermal energy storage[J]. Chinese Journal of Chemical Engineering, 2024, 76(12): 272-280.
DOI：

Chao Gao, Feng Jiang, Benguo Zhang, Mingchuan Shen, Yuguo Zhang. Preparation of coconut oil/aluminum nitride/expanded graphite composite phase change materials with high thermal conductivity and stable shape for thermal energy storage[J]. Chinese Journal of Chemical Engineering, 2024, 76(12): 272-280. DOI：

摘要

Abstract

Phase change energy storage is one of the solutions to effectively deal with the problem of intermittency and spatial and temporal mismatch between supply and demand of new energy sources (solar

wind

etc

.). However

phase change materials (PCMs) suffer from low thermal conductivity

which greatly affects energy storage and release efficiency. In this study

a novel shape-stable phase change material (SSPCM) was prepared by mixing coconut oil (CO) as a PCM with aluminum nitride (AlN) thermally conductive reinforcing particles and vacuum impregnated into expanded graphite (EG). The results showed that the thermal conductivity of the prepared SSPCM reached 2.985 W·m

-1

·K

-1

which was 1765% higher than that of pure CO. The latent heat of SSPCM was 83.67 J·g

-1

which was 99% of the theoretical value. Furthermore

SSPCM showed excellent thermal stability and thermal cycle reliability. The proposed SSPCMs have the advantages of being renewable and simple preparation methods

which have great potential for application.

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