Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (6): 20220054.doi: 10.7503/cjcu20220054

• Materials Chemistry • Previous Articles     Next Articles

Preparation and Performance of Paraffin/Expanded Graphite/Graphene Composite Phase Change Heat Storage Material

YAN Jiasen1, HAN Xianying1, DANG Zhaohan1, LI Jiangang1(), HE Xiangming2()   

  1. 1.College of New Materials and Chemical Engineering,Beijing Institute of Petrochemical Technology,Beijing Key Laboratory of Fuel Cleaning and Efficient Catalytic Emission Reduction Technology,Beijing 102617,China
    2.Institute of Nuclear Energy and New Energy Technology,Tsinghua University,Beijing 100084,China
  • Received:2022-01-23 Online:2022-06-10 Published:2022-03-09
  • Contact: LI Jiangang,HE Xiangming E-mail:lijiangang@bipt.edu.cn;hexm@tsinghua.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(U21A20170);the Key R&D Program of the Ministry of Science and Technology of China(2019YFA0705703)

Abstract:

The paraffin/expanded graphite/graphene aerogel composite phase change material was prepared by using paraffin(PA) as the phase change heat storage material, expanded graphite(EG) as the main thermal conductive material and support material, and graphene aerogel(GA) as the thermal conductivity enhancement material and auxiliary support material. The effects of the amount of GA added on the phase transition temperature, latent heat of phase transition, thermal conductivity and cycling stability of the composite material were investigated. The results show that the phase change material with composition of 80%PA-17%EG-3%GA has good thermal conductivity and excellent cycling stability. Compared with 80%PA-20%EG composite material, it exhibits almost the same phase transition temperature, latent heat of phase transition and cycling stability, but increased thermal conductivity from 4.089 W/(m·K) to 5.336 W/(m·K), showing good application prospects.

Key words: Phase change thermal storage material, Paraffin, Expanded graphite, Thermal conductivity enhancement, Graphene aerogel

CLC Number: 

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