Preparation of Boron Nitride and Silicone Rubber Composite Material for Application in Lithium Batteries

Yafang Zhang, Juhua Huang, Ming Cao, Guoping Du, Ziqiang Liu and Wang Li
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Yafang Zhang: School of Mechanical Engineering, Nanchang University, Nanchang 330031, China
Juhua Huang: School of Mechanical Engineering, Nanchang University, Nanchang 330031, China
Ming Cao: School of Mechanical Engineering, Nanchang University, Nanchang 330031, China
Guoping Du: School of Materials Science and Engineering, Nanchang University, Nanchang 330031, China
Ziqiang Liu: School of Mechanical Engineering, Nanchang University, Nanchang 330031, China
Wang Li: Department of Physics, Hebei Normal University of Science & Technology, Qinhuangdao 066004, China

Energies, 2021, vol. 14, issue 4, 1-15

Abstract: Hexagonal boron nitride and silicone rubber (h-BN/SR) composites were prepared by the mechanical stirring method, and their crystal morphology, chemical structure, thermal properties, and compression stress–strain performance were investigated. The experimental results suggest that silicone rubber combined with h-BN exhibits better thermal conductivity and mechanical properties. When the proportion of h-BN is 30 wt%, the thermal conductivity of the h-BN/SR composite material is 0.58 W/m∙K, which is 3.4 times that of pure silicone rubber. At the same time, the compressive strength of h-BN/SR is 4.27 MPa, which is 6.7 times that of pure silicone rubber. Furthermore, the finite element model was employed to numerically analyze the thermal behavior of a battery with a h-BN/SR composite as the thermal interface material. The analytical results show that the highest temperature of the battery decreased when using h-BN/SR as the thermal interface material in the battery thermal management system. The h-BN/SR composite can thus effectively improve the safety properties of batteries.

Keywords: boron nitride particles; silicone rubber; thermal interface material; battery thermal management (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: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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