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Fabrication and characterization of docosane–dodecanol composite phase change materials for low-temperature domain thermal energy storage and recovery

Author

Listed:
  • Hongbing Chen
  • Chunyang Li
  • Fengjiao Yu
  • Men Li
  • Congcong Wang
  • Pingjun Nie

Abstract

The docosane–dodecanol (DE-CP) binary phase change materials (PCMs) were prepared to improve the heat diffusion performance of the photovoltaic/thermal (PV/T) system in this work. The phase transition temperature of DE-CP matches photovoltaic heat dissipation requirements, with 60 wt% DE achieving optimal latent heat of 243.8 kJ/kg. Expandable graphite maximizes expansion at 900°C for 60 seconds, resulting in high pore volume and adsorption capacity. Incorporating expanded graphite into DE-CP increases thermal conductivity from 0.135 to 1.383 W/(m·K) and ensures excellent compatibility and cyclic stability. This paper provides a reference for further development and integration of composite PCMs in solar PV/T systems.

Suggested Citation

  • Hongbing Chen & Chunyang Li & Fengjiao Yu & Men Li & Congcong Wang & Pingjun Nie, 2025. "Fabrication and characterization of docosane–dodecanol composite phase change materials for low-temperature domain thermal energy storage and recovery," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 20, pages 798-809.
    • Handle: RePEc:oup:ijlctc:v:20:y:2025:i::p:798-809.
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctaf040
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