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Peer-reviewedCC BY 4.0Molecules

Thermal Storage and Thermal Conductivity Performance of Multi-Dimensional Carbon-Modified 1-Octadecanol Phase Change Materials

  • Xiuli Wang1
  • Zhangyong Hu1,2
  • Qingmeng Wang1
  • Zhi Liu1
  • Xiaomin Cheng2
  1. 1School of Mechatronics and Intelligent Manufacturing, Huanggang Normal University, Huanggang 438000, China
  2. 2School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
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Abstract

The rapid expansion of the renewable energy industry renders thermal energy storage technology a critical support for high-efficiency energy utilization. As an organic phase change material (PCMs), 1-octadecanol (OD) is plagued by intrinsic limitations of low thermal conductivity and sluggish heat absorption release kinetics, restricting its practical deployment under high-power thermal energy storage operating conditions. In this study, carbon nanotubes (CNTs), graphene (GR) and three-dimensional carbon foam (CF) were utilized to modify OD for fabricating a series of composite phase change thermal storage materials (CPCMs). A suite of characterizations including FTIR, SEM, DSC, and Hot Disk measurements were employed to systematically probe the phase composition, microstructure, phase change temperature, phase change enthalpy, stability, and thermal conductivity of CPCMs. Modification effects exerted by carbon-based fillers with varied structures on OD differ remarkably. Three-dimensional network structured CF can effectively build continuous thermal conduction pathways, while GR sheets contribute to optimized interfacial heat transfer performance. In contrast, CNTs are prone to agglomeration and intertwining, which undermines their thermal conductivity enhancement effect. Nevertheless, all CPCMs retain favorable thermal storage capability and superior cycling stability. This work provides meaningful guidance for the rational selection of carbon-based fillers and performance optimization of low-temperature organic PCMs.

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Cite

BibTeXRIS
BibTeX
@article{wang2026thermal,
  title = {{Thermal Storage and Thermal Conductivity Performance of Multi-Dimensional Carbon-Modified 1-Octadecanol Phase Change Materials}},
  author = {Xiuli Wang and Zhangyong Hu and Qingmeng Wang and Zhi Liu and Xiaomin Cheng},
  journal = {Molecules},
  year = {2026},
  month = oct,
  doi = {10.3390/molecules31213838},
  url = {https://www.mdpi.com/1420-3049/31/21/3838},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Thermal Storage and Thermal Conductivity Performance of Multi-Dimensional Carbon-Modified 1-Octadecanol Phase Change Materials
AU  - Xiuli Wang
AU  - Zhangyong Hu
AU  - Qingmeng Wang
AU  - Zhi Liu
AU  - Xiaomin Cheng
PY  - 2026
DA  - 2026/10/23
JO  - Molecules
DO  - 10.3390/molecules31213838
UR  - https://www.mdpi.com/1420-3049/31/21/3838
AB  - The rapid expansion of the renewable energy industry renders thermal energy storage technology a critical support for high-efficiency energy utilization. As an organic phase change material (PCMs), 1-octadecanol (OD) is plagued by intrinsic limitations of low thermal conductivity and sluggish heat absorption release kinetics, restricting its practical deployment under high-power thermal energy storage operating conditions. In this study, carbon nanotubes (CNTs), graphene (GR) and three-dimensional carbon foam (CF) were utilized to modify OD for fabricating a series of composite phase change thermal storage materials (CPCMs). A suite of characterizations including FTIR, SEM, DSC, and Hot Disk measurements were employed to systematically probe the phase composition, microstructure, phase change temperature, phase change enthalpy, stability, and thermal conductivity of CPCMs. Modification effects exerted by carbon-based fillers with varied structures on OD differ remarkably. Three-dimensional network structured CF can effectively build continuous thermal conduction pathways, while GR sheets contribute to optimized interfacial heat transfer performance. In contrast, CNTs are prone to agglomeration and intertwining, which undermines their thermal conductivity enhancement effect. Nevertheless, all CPCMs retain favorable thermal storage capability and superior cycling stability. This work provides meaningful guidance for the rational selection of carbon-based fillers and performance optimization of low-temperature organic PCMs.
SN  - 1420-3049
ER  -