Preparation and Characterization of n-Octadecane@SiO2/GO and n-Octadecane@SiO2/Ag Nanoencapsulated Phase Change Material for Immersion Cooling of Li-Ion Battery

Nanoencapsulated phase change materials (NePCMs) are promising thermal energy storage (TES) and heat transfer materials that show great potential in battery thermal management systems (BTMSs). In this work, nanocapsules with a paraffin core and silica shell were prepared using an optimized sol-gel m...

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Bibliographic Details
Published in:Energies (Basel) 2023-02, Vol.16 (3), p.1498
Main Authors: Gu, Jianhao, Du, Jiajie, Li, Yuxin, Li, Jinpei, Chen, Longfei, Chai, Yan, Li, Yongli
Format: Article
Language:English
Subjects:
battery thermal management
Chemical composition
Coolants
Cooling
Efficiency
Energy storage
Ethanol
Experiments
Heat conductivity
Heat transfer
Immersion
Immersion cooling
Insulation
Lithium-ion batteries
Methods
Mineral oils
nanoencapsule
Nanomaterials
Particle size
Phase change materials
Polymerization
Reagents
Renewable resources
Silica
Silicon dioxide
Slurries
Sol-gel processes
Supercooling
Temperature
Thermal conductivity
Thermal energy
Thermal properties
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Summary:Nanoencapsulated phase change materials (NePCMs) are promising thermal energy storage (TES) and heat transfer materials that show great potential in battery thermal management systems (BTMSs). In this work, nanocapsules with a paraffin core and silica shell were prepared using an optimized sol-gel method. The samples were characterized by different methods regarding chemical composition, thermal properties, etc. Then, the nanocapsules were used as the coolant by mixing with insulation oil in the immersion cooling of a simulative battery. The sample doped with Ag on the shell with a core-to-shell ratio of 1:1 showed the best performance. Compared to the sample without doping material, the thermal conductivity increased by 49%, while the supercooling degree was reduced by 35.6%. The average temperature of the simulative battery cooled by nanocapsule slurries decreased by up to 3.95 °C compared to the test performed with pure insulation oil as the coolant. These novel nanocapsules show great potential in the immersion cooling of a battery.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16031498