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多孔离子网络/CNT复合分离器作为高性能硫电池的多硫化阻隔盾

Zhiwen Fan¹, Jian Tao¹, Shuting Peng¹

¹Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.

Macromolecular rapid communications

|October 5, 2023

概括

研究人员开发了一种用于硫 (Li-S) 电池的新分离器. 这种分离器有效地捕获聚硫化物,通过防止容量衰减,显著提高了电池容量和寿命.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
储能储能储能储能储能储能

背景情况:

硫 (Li-S) 电池具有较高的理论能量密度.
聚硫化物穿效应导致Li-S电池的容量迅速衰减.
需要有效的战略来抑制聚硫化物迁移.

研究的目的:

开发一种用于Li-S电池的新型分离器.
通过静电吸附来减轻聚硫化物穿效应.
为了提高Li-S电池的速度性能和循环稳定性.

主要方法:

一个交叉连接的聚胺 (PIN) 改性碳纳米管 (CNT) 分离器的制造.
通过真空过,将PIN/CNT复合材料涂在商用聚烯膜上.
在Li-S电池电池中分离器性能的表征.

主要成果:

通过极性和静电相互作用,PIN/CNT分离器有效地捕获可溶性聚硫化物.
抑制聚硫化物迁移显著改善了Li-S电池的性能.
与对照组相比,PIN/CNT涂层隔离器的初始容量增加了1.3倍.

结论:

使用PIN/CNT分离器的静电吸附策略有效地抑制了聚硫化物穿.
这种方法提高了Li-S电池的循环寿命和速率能力.
开发的分离器对先进的储能应用有很大的希望.

关键词:

仿制的使用方法硫电池的使用情况多孔的离子网络是多孔的.分离器分离器分离器分离器分离器

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