Improvement of the thermal properties of Bio-based PCM using exfoliated graphite nanoplatelets

Su Gwang Jeong, Okyoung Chung, Seulgi Yu, Sughwan Kim, Sumin Kim

Research output: Contribution to journalArticlepeer-review

87 Citations (Scopus)


Bio-based PCMs are a type of organic fatty acid ester PCMs made from natural resources, such as soy beans and palm oils. Bio-based PCMs are capable of absorbing, storing, and releasing large amounts of latent heat, similar to conventional paraffin-based PCMs. Compared to the paraffinic PCMs, Bio-based PCMs are significantly less flammable. Also they have a major drawback, namely the low thermal conductivity like as the other PCMs. To improve the thermal conductivity of Bio-based PCMs, xGnP (Exfoliated graphite nanoplatelets) can be an effective enhancement. Therefore we prepared form stable Bio-based PCMs with xGnP, by using the vacuum impregnation method. In this study, we used one of the Bio-based PCMs, which contained soybean oils, coconut oils, and beef tallow. And it has a latent heat capacity of 149.2 J/g and melting point of 29.38 °C. The Bio-based PCM was incorporated into the porous structure of xGnP. The characteristics of the Bio-based composite PCM were determined by using SEM, DSC, FTIR, TGA and TCi.

Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalSolar Energy Materials and Solar Cells
Publication statusPublished - 2013

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korea government (MEST) ( No. 2012-0005188 ).

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films


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