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Synthesis of Nanoencapsulated Phase Change Materials with Ag Shell for Thermal Energy Storage

  • Huanmei Yuan
  • Hao BaiEmail author
  • Jian Zhang
  • Zefei Zhang
Conference paper
  • 481 Downloads
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Encapsulated phase change materials have been widely applied in energy-saving and energy-efficient process, while poor thermal conductivity of shell materials is the key problem needed to be solved for micro/nanocapsules to satisfy the requirement of fast temperature response in some fields. In this study, a chemical reduction method was proposed to prepare nanocapsules with lauric acid (LA) as core and silver as shell which can improve the heat transfer performance. The results show that the thermal storage capability of the nanocapsules reached 95.29 J/g and the encapsulation ratio was 67.21%. Furthermore, the enthalpy loss of melting and freezing was negligible after 2000 cycles, indicating its good thermal reliabilities. Most importantly, the thermal conductivity enhancement of the nanocapsules can be as high as 333% to that of pure LA. Owing to these excellent properties, the nanocapsules are promising for thermal energy storage and thermo-regulation applications.

Keywords

Phase change material Ag shell Lauric acid High thermal conductivity 

Notes

Acknowledgements

This work was supported by the Innovation Talents Fund Project of University of Science Technology Beijing.

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Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  • Huanmei Yuan
    • 1
    • 2
  • Hao Bai
    • 1
    • 2
    Email author
  • Jian Zhang
    • 1
    • 2
  • Zefei Zhang
    • 1
    • 2
  1. 1.State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijingChina
  2. 2.School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijingChina

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