Preparation and Characterization of n-Octadecane@SiO 2 /GO and n-Octadecane@SiO 2 /Ag Nanoencapsulated Phase Change Material for Immersion Cooling of Li-Ion Battery

Jianhao Gu, Jiajie Du, Yuxin Li, Jinpei Li, Longfei Chen, Yan Chai and Yongli Li ()
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Jianhao Gu: Institute for Clean Energy Technology, North China Electric Power University, Beijing 102206, China
Jiajie Du: Thermal Process Engineering, Otto von Guericke University, 39106 Magdebur, Germany
Yuxin Li: Institute for Clean Energy Technology, North China Electric Power University, Beijing 102206, China
Jinpei Li: Institute for Clean Energy Technology, North China Electric Power University, Beijing 102206, China
Longfei Chen: Institute for Clean Energy Technology, North China Electric Power University, Beijing 102206, China
Yan Chai: Institute for Clean Energy Technology, North China Electric Power University, Beijing 102206, China
Yongli Li: Institute for Clean Energy Technology, North China Electric Power University, Beijing 102206, China

Energies, 2023, vol. 16, issue 3, 1-16

Abstract: 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.

Keywords: nanoencapsule; phase change materials; battery thermal management; immersion cooling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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