纳米增强石墨/相变材料/石墨烯复合材料,用于可持续和高效的被动热管理
Ji-Xiang Wang1,2,3,4, Yufeng Mao1, Nenad Miljkovic5,6,7,8,9
1Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|August 9, 2024
概括
这项研究引入了一种用于被动电池热管理系统的新型复合材料. 该材料增强了导热性,并使其能够自冷,大大提高了电池的安全性和性能.
科学领域:
- 材料科学 材料科学 材料科学
- 热力工程是热力工程中的一个.
- 电池技术 电池技术
背景情况:
- 被动电池热管理系统 (BTMS) 对于防止电池热失控 (TR) 至关重要.
- 换相材料 (PCM) 具有管理短暂热负荷的潜力,但面临诸如流体泄漏和低导热等挑战.
- 传统PCM的冷却能力是暂时的,随着潜在热量耗尽而减少.
研究的目的:
- 为被动BTMS开发一种先进的复合材料,克服传统PCM的局限性.
- 提高电池的热管理能力,提高安全性和运营效率.
- 创建一个低成本和简单的替代主动冷却系统.
主要方法:
- 扩展石墨/PCM/石墨烯复合材料的制造.
- 在现实BTMS中集成和测试复合材料.
- 评估热性能,包括降温和冷却可持续性的评估.
主要成果:
- 开发的复合材料有效地减轻PCM泄漏,提高有效的导热性.
- 石墨烯涂层促进PCM再生的辐射冷却,延长冷却时间.
- 与传统材料相比,复合材料在BTMS中显示了26%的温度降低.
- 该材料实现了与主动冷却系统可比的热控制性能.
结论:
- 扩展石墨/PCM/石墨烯复合材料为被动电池热管理提供了可持续和高效的解决方案.
- 这种材料通过减轻热失控风险,显著提高了电池的安全性.
- 复合材料是一种低成本,更简单的替代主动冷却,在热管理系统中具有广泛的应用.
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