As the demand for electric vehicles increases, the stability of batteries has become one of the most significant issues. The battery housing, which protects the battery from external stimuli such as vibration, shock, and heat, is the crucial element in resolving safety problems. Conventional metal battery housings are being converted into polymer composites due to their lightweight and improved corrosion resistance to moisture. The transition to polymer composites requires high mechanical strength, electrical insulation, and thermal stability. In this paper, we proposes a high-strength nanocomposite made by infiltrating epoxy into a 3D aligned h-BN structure. The developed 3D aligned h-BN/epoxy composite not only exhibits a high compressive strength (108 MPa) but also demonstrates excellent electrical insulation and thermal stability, with a stable electrical resistivity at 200 °C and a low thermal expansion coefficient (11.46×ppm/°C), respectively.

1. Introduction 
2. Experimental 
    2.1. h-BN 3차원 구조체 제작 
    2.2. h-BN/에폭시 복합소재 제작 
    2.3. h-BN 구조체 및 복합소재 물성 분석 
3. Results and Discussion 
4. Conclusion 
Supplementary Materials 
Conflict of Interest Declaration 
Author Information and Contribution  
Acknowledgement
References

• 송기호(한국세라믹기술원) | Kiho Song (Engineering Ceramic Center, Korea Institute of Ceramic Engineering & Technology, Icheon 17303, Republic of Korea)
• 송현승(한국세라믹기술원) | Hyunseung Song (Engineering Ceramic Center, Korea Institute of Ceramic Engineering & Technology, Icheon 17303, Republic of Korea)
• 이상인(한국세라믹기술원) | Sang In Lee (Engineering Ceramic Center, Korea Institute of Ceramic Engineering & Technology, Icheon 17303, Republic of Korea)
• 안창의(한국세라믹기술원) | Changui Ahn (Engineering Ceramic Center, Korea Institute of Ceramic Engineering & Technology, Icheon 17303, Republic of Korea) Corresponding author