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

被引：9
作者：
Gu, Jianhao [1 ]
Du, Jiajie [2 ]
Li, Yuxin [1 ]
Li, Jinpei [1 ]
Chen, Longfei [1 ]
Chai, Yan [1 ]
Li, Yongli [1 ,3 ,4 ]
机构：
[1] North China Elect Power Univ, Inst Clean Energy Technol, Beijing 102206, Peoples R China
[2] Otto Guericke Univ, Thermal Proc Engn, D-39106 Magdebur, Germany
[3] North China Elect Power Univ, Beijing Key Lab Emiss Surveillance & Control Therm, Beijing 102206, Peoples R China
[4] North China Elect Power Univ, MOE Key Lab Power Stn Energy Transfer Convers & Sy, Beijing 102206, Peoples R China
来源：
ENERGIES | 2023年 / 16卷 / 03期
基金：
国家重点研发计划;
关键词：
nanoencapsule; phase change materials; battery thermal management; immersion cooling; THERMAL-ENERGY STORAGE; GRAPHENE OXIDE; SUPERCOOLING SUPPRESSION; HEAT-GENERATION; MANAGEMENT; CONDUCTIVITY; SHELL; SURFACE;
D O I：
10.3390/en16031498
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
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 degrees 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.
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页数：16
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