Advancing Thermal Energy Storage: Synthesis and Thermal Performance of Silica-Encapsulated Paraffin PCMs DOI Creative Commons
Raihana Jannat Adnin, Han‐Seung Lee

Molecules, Journal Year: 2025, Volume and Issue: 30(8), P. 1698 - 1698

Published: April 10, 2025

This study successfully synthesizes SiO2-encapsulated nano-phase change materials (NPCMs) via a sol–gel method, using paraffin as the thermal storage medium. The encapsulation process is validated through FTIR, XRD, and XPS analyses, confirming formation of an amorphous SiO2 shell without any chemical interaction between core shell. SEM imaging reveals well-defined core–shell structure with uniform spherical geometry, smallest particle size (190 nm) observed in sample 4:1 paraffin/SiO2 ratio (PARSI-4). TGA results demonstrate enhanced stability, thicker shells effectively protecting against degradation. DSC analysis indicates that increased improves performance, PARSI-4 exhibiting highest melting (160.86 J/g) solidifying (153.93 enthalpies. (ER) efficiency (EE) have been accomplished at 87.83% 87.04%, respectively, sample. Thermal cycling tests confirm material’s long-term 98.16% enthalpy retention even after 100 cycles. Additionally, leakage resistance validate structural integrity encapsulated paraffin, preventing spillage elevated temperatures. These findings potential NPCMs for efficient energy (TES), making them promising candidates sustainable energy-efficient applications.

Language: Английский

Advancing Thermal Energy Storage: Synthesis and Thermal Performance of Silica-Encapsulated Paraffin PCMs DOI Creative Commons
Raihana Jannat Adnin, Han‐Seung Lee

Molecules, Journal Year: 2025, Volume and Issue: 30(8), P. 1698 - 1698

Published: April 10, 2025

This study successfully synthesizes SiO2-encapsulated nano-phase change materials (NPCMs) via a sol–gel method, using paraffin as the thermal storage medium. The encapsulation process is validated through FTIR, XRD, and XPS analyses, confirming formation of an amorphous SiO2 shell without any chemical interaction between core shell. SEM imaging reveals well-defined core–shell structure with uniform spherical geometry, smallest particle size (190 nm) observed in sample 4:1 paraffin/SiO2 ratio (PARSI-4). TGA results demonstrate enhanced stability, thicker shells effectively protecting against degradation. DSC analysis indicates that increased improves performance, PARSI-4 exhibiting highest melting (160.86 J/g) solidifying (153.93 enthalpies. (ER) efficiency (EE) have been accomplished at 87.83% 87.04%, respectively, sample. Thermal cycling tests confirm material’s long-term 98.16% enthalpy retention even after 100 cycles. Additionally, leakage resistance validate structural integrity encapsulated paraffin, preventing spillage elevated temperatures. These findings potential NPCMs for efficient energy (TES), making them promising candidates sustainable energy-efficient applications.

Language: Английский

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