Advanced Thermal Interface Materials: Insights into Low‐Temperature Sintering and High Thermal Conductivity of MgO
Abstract
Abstract The escalating frequency of electric vehicle (EV) fires has underscored the critical importance of effective thermal‐management in battery package (TMBP). A key challenge in current TMBP lies with the low thermal conductivity (TC, 3 W m −1 K −1 ) of commercial alumina‐polymer composite (thermal interface materials, TIM). While magnesia (MgO) TIMs, which show high TC (8–10 W m −1 K −1 , this study) and low cost, are emerging as an alternative heat‐dissipation material (HDM), their full potential remains untapped. Here, the development of novel MgO (≥ 80 W m −1 K −1 ) and MgO TIMs is presented as next‐generation HDMs, designed to outperform conventional alumina (20–30 W m −1 K −1 ) and alumina TIMs. Crucially, the fundamental mechanisms enabling our new MgO to achieve an unprecedented TC of ≥ 80 W m −1 K −1 are elucidated, significantly surpassing the previously reported range of 40–60 W m −1 K −1 . This study provides fundamental insights into achieving such high thermal conductivity in MgO. Furthermore, it is demonstrated that this novel MgO TIM cools EV batteries three times faster than commercial alternatives, offering a robust solution for effective EV fire prevention. Consequently, this high‐TC MgO is poised to contribute significantly to enhancing EV safety.
Article Details
Authors (17)
Su‐Jin Ha
Functional Ceramics Department Powder & Ceramics Division Korea Institute of Materials Science (KIMS) Changwon Gyeongnam 641‐831 Republic of Korea
Hye‐Jeong Jang
Functional Ceramics Department Powder & Ceramics Division Korea Institute of Materials Science (KIMS) Changwon Gyeongnam 641‐831 Republic of Korea
Hui‐jin Son
Functional Ceramics Department Powder & Ceramics Division Korea Institute of Materials Science (KIMS) Changwon Gyeongnam 641‐831 Republic of Korea
Young Kook Moon
Hyun‐Ae Cha
Functional Ceramics Department Powder & Ceramics Division Korea Institute of Materials Science (KIMS) Changwon Gyeongnam 641‐831 Republic of Korea
Jong‐Jin Choi
Functional Ceramics Department Powder & Ceramics Division Korea Institute of Materials Science (KIMS) Changwon Gyeongnam 641‐831 Republic of Korea
Jee‐Hyuk Ahn
Functional Ceramics Department Powder & Ceramics Division Korea Institute of Materials Science (KIMS) Changwon Gyeongnam 641‐831 Republic of Korea
Byung‐Dong Hahn
Functional Ceramics Department Powder & Ceramics Division Korea Institute of Materials Science (KIMS) Changwon Gyeongnam 641‐831 Republic of Korea
Kyung‐Hoon Cho
School of Materials Science and Engineering Kumoh National Institute of Technology 61 Daehak‐ro Gumi Gyeongbuk 39177 Republic of Korea
Do‐Cheon Ahn
Pohang Accelerator Laboratory Pohang University of Science and Technology 127 Jigokro Pohang Kyungbuk 37637 Republic of Korea
Jun Lim
Pohang Accelerator Laboratory, Pohang University of Science and Technology
Sang‐Chae Jeon
School of Materials Science and Engineering Changwon National University Gyeongsangnam‐do 51140 Republic of Korea
In Chul Jung
Youngsup Song
Department of Mechanical and Aerospace Engineering University of Florida Gainesville FL 32611 USA
Hao Zhou
Tianli Feng
Cheol‐Woo Ahn
Functional Ceramics Department Powder & Ceramics Division Korea Institute of Materials Science (KIMS) Changwon Gyeongnam 641‐831 Republic of Korea