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作为高压NMC811中的电解质添加剂,从古老的首个Sultone中提取AG+SiOx多层囊细胞

Matthias Weiling¹, Christian-Timo Lechtenfeld², Silvan Stuckenberg²

¹Helmholtz-Institute Münster, IMD-4, Forschungszentrum Jülich GmbH, Corrensstrasse 46, 48149, Münster, Germany.

Small (Weinheim an der Bergstrasse, Germany)

|August 26, 2025

概括

在离子电池中的含阳极中添加1,8-纳弗索 (1,8-NS) 可以提高性能. 这种添加剂形成稳定的固体电解质间相 (SEI),提高了电池的周期寿命和能量密度.

科学领域:

材料科学
电化学
电池技术

背景情况:

阳极增强离子电池 (LIB) 的能量密度,但受到体积变化和固体电解质间相 (SEI) 形成的不利影响.
有效的SEI形成对于改善含LIB的循环寿命和电化学性能至关重要.
含硫的电解质添加剂由于它们的可用性和化学特性而提供了一个有前途的策略.

研究的目的:

调查1,8-纳夫托苏顿 (1,8-NS) 作为高压LIBs中的电解质添加剂的作用.
为了阐明1,8-NS在电池中的降解产品和途径.
了解1,8-NS如何促进有效的SEI的形成,并提高电化学性能.

主要方法:

使用先进的光谱和光谱特征技术.
进行理论计算以补充实验数据.
分析了NMC811紫外线AG+20%SiOx细胞中的1,8-NS降解产物和降解途径.

主要成果:

在使用1,8-NS添加剂的LIB中观察到显著增强的电化学性能.
确定了1,8-NS降解,苏环开放和化学降解作为关键途径.
在SiOx阳极上证实了含有1,8-NS降解产品的分层SEI的形成.

结论:

1,8-NS有效提高了基于SiOx的LIB的电化学性能.
由于1,8-NS降解产品形成了坚固的,分层的SEI,增强了机械和电化学性能.
1,8-NS是一种有前途的电解质添加剂,用于推进高能量密度LIB技术.

关键词:

1,8-纳夫托苏顿离子电池运行ATR-FTIR光谱的使用固体电解质间相

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