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<p>The utilization of phase change materials (PCMs) for effective thermal management applications is limited due to their inherently low thermal transport properties. This study explores the enhancement of thermal properties for the organic mixture (OM34) PCM through the addition of environmentally friendly coconut shell carbon powder (CP) and highly conductive graphene platelets (GP). The composite phase change materials (CPCM) were prepared by dispersing GP and CP in OM34 with different mass concentrations. The FTIR spectrum peaks designated no chemical reaction, only physical interaction, upon the addition of carbonaceous materials. Differential scanning calorimetry (DSC) results indicated that the latent heat capacity of pure PCM was enhanced by 6.3% during melting and 8.4% during freezing for 1.0% of CPCM. The results indicated a considerable increase in the specific heat capacity of pure PCM with the addition of 1.0% CPCM, about 1–2% in solid states and 2–4% in liquid states. In addition, the dispersion of GP and CP prolonged the thermal degradation of pure PCM without compromising its chemical structure and favorable thermal properties. The results confirmed that 1.0% of CPCM exhibited the highest thermal conductivity enhancement of 69.27% in solid states and 59.46% in liquid states. In conclusion, this composite material holds potential applications in solar thermal, and electronic cooling, addressing the limitations of traditional PCMs in thermal management.</p>

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Thermal and phase change characteristics of organic phase change material enhanced by carbonaceous materials

  • 期刊论文

  • 发表日期：

    2025年3月24日

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  • D. Kameswara Rao,
  • K. Sudhakar Reddy,
  • V. V. Subba Rao,
  • P. Sundaram

摘要

The utilization of phase change materials (PCMs) for effective thermal management applications is limited due to their inherently low thermal transport properties. This study explores the enhancement of thermal properties for the organic mixture (OM34) PCM through the addition of environmentally friendly coconut shell carbon powder (CP) and highly conductive graphene platelets (GP). The composite phase change materials (CPCM) were prepared by dispersing GP and CP in OM34 with different mass concentrations. The FTIR spectrum peaks designated no chemical reaction, only physical interaction, upon the addition of carbonaceous materials. Differential scanning calorimetry (DSC) results indicated that the latent heat capacity of pure PCM was enhanced by 6.3% during melting and 8.4% during freezing for 1.0% of CPCM. The results indicated a considerable increase in the specific heat capacity of pure PCM with the addition of 1.0% CPCM, about 1–2% in solid states and 2–4% in liquid states. In addition, the dispersion of GP and CP prolonged the thermal degradation of pure PCM without compromising its chemical structure and favorable thermal properties. The results confirmed that 1.0% of CPCM exhibited the highest thermal conductivity enhancement of 69.27% in solid states and 59.46% in liquid states. In conclusion, this composite material holds potential applications in solar thermal, and electronic cooling, addressing the limitations of traditional PCMs in thermal management.