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约束FSI^-通过在现场交叉连接离子液体来构建用于金属电池的自我愈合的SEI膜

Yinping Qin^1,2, Hefeng Wang², Jingjing Zhou²

¹Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials & Technology, Jianghan University, Wuhan, China.

Angewandte Chemie (International ed. in English)

|February 28, 2024

概括

金属阳极的新型自愈膜稳定了电池接口. 这种方法修复了固体电解质相间膜 (SEI),提高了金属电池的寿命和性能.

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:

金属电池由于固体电解质介相 (SEI) 膜分解和重建而遭受加速衰变.
稳定电解质接口对于电池的寿命至关重要,但统一地固定SEI修复剂仍然是一个挑战.

研究的目的:

为金属阳极开发一种自愈膜,能够有效修复SEI膜.
通过一种新的SEI维修策略,提高金属电池的稳定性和耐用性.

主要方法:

与聚乙烯氧化物 (PEO) 交联的离子液体1-乙烯-3-甲基利米达二 (VMI-FSI) 与聚乙烯氧化物 (PEO),以创建一个自我愈合的膜.
利用FSI-离子和光聚合物的薄膜形成特性,以固定均的剂.
研究FSI-组的化学分解成LiF和Li3N,用于SEI的形成和修复.

主要成果:

自愈膜成功地形成并修复了金属上的SEI膜,包括树突所造成的裂.
交换的FSI-离子的电化学分解用无机盐加强了SEI膜.
/CO2电池显示出高初始放电能力 (183.0 mAh/g) 和稳定运行500个周期 (81.4%的保留率,99.97%的库伦比效率).

结论:

开发的自愈膜为稳定金属电池中的电解质接口提供了有效的策略.
这种方法为自愈合的金属阳极提供了一个新的设计,从而使金属电池更耐用和持久.

关键词:

SEI 电影电影电影电影结合FSI−离子的离子.金属电池是金属电池的一种.它具有自我愈合的功能.

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