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生物灵感,坚固,阻燃分离器向先进的安全硫电池

Ying Wang¹, Menghe Zhu¹, Jianhao Zhu¹

¹College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, China.

Journal of colloid and interface science

|July 17, 2025

概括

研究人员开发了一种用于硫 (LiS) 电池的新型复合分离器. 这种CaCO3@PDA@PE分离器通过防止聚硫化物穿和改善离子传输来提高安全性和性能.

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
电池技术电池技术

背景情况:

在硫电池 (LiS) 中的微孔聚乙烯 (PE) 分离器面临着热收缩和不良的聚硫化物屏障特性等挑战.
这些局限性导致 LiS 电池的穿效应,容量衰减和安全问题.

研究的目的:

为PE分离器开发一种新的复合材料功能层,以提高LiS电池的性能和安全性.
解决 LiS 电池中的聚硫化物穿,热不稳定性和树岩形成问题.

主要方法:

使用聚多巴胺 (PDA) 辅助的现场液相生长技术,在PE分离器上制造出类似珊瑚的CaCO3复合层.
复合材料层的结构和特性被描述,其在LiS电池中的性能被电化学评估.

主要成果:

该CaCO3@PDA@PE复合材料分离器表现出增强的机械性能,耐热收缩性和阻燃性.
复合材料层通过协同化学定 (PDA) 和物理屏障 (CaCO3) 效应有效地抑制了聚硫化物穿.
带有复合分离器的LiS电池显示了提高的特定容量,速率能力,循环寿命,并抑制了树形成.

结论:

开发的CaCO3@PDA@PE复合材料分离器为创建高安全性,高性能LiS电池分离器提供了一个具有成本效益的策略.
协同作用的"化学固-物理屏障"方法有效地解决了LiS电池技术的关键挑战.

关键词:

化学吸附是一种化学吸附.阻燃性是指阻燃性是指阻燃性.这种电池是LiS电池.安全的安全的安全的安全的安全.分离器分离器分离器分离器分离器

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