先进的热接口材料:MgO低温烧结和高热导性的洞察
Su-Jin Ha1,2, Hye-Jeong Jang1, Hui-Jin Son1
1Functional Ceramics Department, Powder & Ceramics Division, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam, 641-831, Republic of Korea.
Advanced materials (Deerfield Beach, Fla.)
|August 28, 2025
概括
新的 (MgO) 热接口材料 (TIM) 实现了电动汽车电池组的超高导热率. 这项创新显著提高了散热,为防止电池火灾和提高电动汽车安全提供了有希望的解决方案.
科学领域:
- 材料科学
- 化学工程
- 电池技术
背景情况:
- 电动汽车 (EV) 的火灾凸显了电池组中需要改进的热管理.
- 目前的聚合物热接口材料 (TIM) 具有较低的导热率 (TC),限制了散热.
- (MgO) TIM提供了更高TC的低成本替代品,但其全部潜力尚未得到充分利用.
研究的目的:
- 开发基于MgO的新型散热材料 (HDM) 用于下一代电动汽车电池的热管理.
- 在MGOTM中实现超高的导热性,超过传统的材料.
- 阐明开发的MGOTM增强导热性的基本机制.
主要方法:
- 开发基于MgO的新型热接口材料.
- 开发的MgO TIM的热导率 (TC) 的表征.
- 与使用电动汽车电池模型的商业替代品对冷却性能进行比较分析.
主要成果:
- 新型MgO TIM实现了前所未有的80W m-1 K-1的TC,明显超过传统 (20-30W m-1 K-1),以及之前报告的MgO TIM (40-60W m-1 K-1).
- 在新MgO材料中实现超高TC的基本机制得到了阐明.
- 与商业材料相比,新型MgO TIM的冷却速度是电动汽车电池的三倍.
结论:
- 开发的超高TC MgO TIM代表了电动汽车电池散热材料的重大进步.
- 这项创新通过提高热稳定性提供了有效的电动汽车防火解决方案.
- 这些发现为MgO实现高导热性提供了基本的见解,为提高电动汽车安全铺平了道路.
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