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微囊修改策略赋予分离器多功能,以提高金属电池的安全性

Can Liao^1,2, Wanqing Li¹, Longfei Han¹

¹State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|June 27, 2024

概括

这项研究开发了一种新的复合材料分离器 (P@AS),以提高金属电池的安全性和性能. 该P@AS分离器抑制树突,并提高消防安全,克服关键的商业化障碍.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
储能储能储能储能储能储能

背景情况:

金属电池 (LMB) 具有高能量密度,但面临着树生长和电解质易燃性带来的挑战.
这些问题阻碍了先进电池技术的商业化.

研究的目的:

开发一个使用微封装和电的多功能复合材料分离器 (P@AS).
为了提高金属电池的电化学性能和安全性.

主要方法:

结合微封装和电来创建P@AS复合材料分离器.
研究了阻燃机制和离子运输特性.
评估了沉积行为和电化学循环稳定性.

主要成果:

该P@AS分离器表现出一个冷凝相阻燃机制,抑制燃烧.
在Li-Cu电池中达到95.27%的库伦比效率,在LFP//Li电池中300个循环后保持93.56%的容量.
在袋式电池火灾测试中,被证明延迟了点火138秒,并减少了热释放.

结论:

通过增强的离子流和均沉积,P@AS分离器有效地抑制树突.
分离器显著提高了金属电池的消防安全.
这种方法为高能量密度LMBs的商业应用提供了可行的解决方案.

关键词:

没有树的树.消防安全消防安全阻燃剂是一种阻燃剂.金属电池的金属电池是什么多功能分离器多功能分离器

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