4.7 Review

Role and influence of hydrogen bonds in composite phase change materials: A critical review

Journal

SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 248, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.solmat.2022.112031

Keywords

Hydrogen bonds; Phase change materials; Phase change behavior; Heat storage characteristic

Funding

  1. Science and Technology Plan Project of Guizhou Province [X2019067]
  2. Natural Science Foundation of Guizhou University [[2020] 12]
  3. Cultivation Project of Guizhou University [GZUQLXK21006]
  4. Potential Subject Improvement Plan Project of Guizhou University [[2020] 5021]
  5. Guizhou Science and Technology Cooperation Project [GCC [2022] 009-1]
  6. High-level Innovative Talent Project of Guizhou Province
  7. [ZK [2021] 240]

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This review focuses on the effects of hydrogen bonds (H-bonds) on phase change behavior and heat storage characteristics of phase change materials (PCMs). It discusses the controversial views on the role of H-bonds in phase change temperature and latent heat, as well as the potential of H-bonds to improve other properties of PCMs.
Hydrogen bonds (H-bonds) in phase change materials (PCMs) had different effects on phase change behavior and heat storage characteristic. This review focused on the latest experimental progress of PCMs with H-bonds and the controversial effect of H-bonds on the phase change behavior and heat storage characteristic. Some scholars believed that the strong restriction brought by the strong H-bonds required a higher temperature to complete phase change process, and the phase change temperature increased. Conversely, others thought that the strong H-bonds would limit the phase change behavior and reduce the phase change temperature. Furthermore, the effect of H-bonds on phase change latent heat was as follows: for PCMs such as sugar alcohols, H-bonds were the source of phase change latent heat. For composite PCMs encapsulated with porous media, H-bonds would hinder the phase change process, resulting in limited latent heat. Type, strength and density of H-bonds would affect the heat storage characteristic. Meanwhile, the H-bonds could improve other properties, such as, encapsulation capability, morphological stability, thermal stability, mechanical properties, etc. This work could provide basis and support for an in-depth understanding of the internal relationship between H-bonds structure and properties regulation of PCMs.

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