化在离子电池的固体电解质间相中作为的粉碎加速器
Jinran Sun1,2,3, Guodong Chen1,2,3, Bo Wang4,5
1Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, Shandong, China.
Angewandte Chemie (International ed. in English)
|June 12, 2024
概括
在固体电解质间相 (SEI) 中的化 (LiH) 导致电池中的微米阳极粉碎. 了解LiH的理解
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:
- 微米阳极具有高容量,但在电池循环过程中会被粉碎.
- 固体电解质介相 (SEI) 组成影响阳极稳定性,但其在失效中的作用尚不清楚.
- 关键的无机SEI组件及其在循环过程中的演变需要进一步研究.
研究的目的:
- 为了在SEI中的化 (LiH) 和微米粉碎之间建立直接的相关性.
- 为了阐明微米阳极的故障机制.
- 提出一种将SEI特性与电化学性能脱的方法.
主要方法:
- 分析SEI的组成及其在电化学循环过程中的演变.
- 含量与粒子完整性之间的相关性研究.
- 研究LiH在脱过程中的电化学行为.
主要成果:
- 在SEI中的LiH量与颗粒粉碎程度之间发现了直接联系.
- 在脱过程中反向化LiH被确定为加剧压力并导致粉碎化的关键因素.
- 开发了一种新的方法,将SEI的影响与电池性能分开.
结论:
- 在SEI中的化 (LiH) 是导致微米阳极粉碎的关键因素.
- 了解LiH的作用对于开发稳定的高容量阳极至关重要.
- 拟议的方法有助于分析电池阳极中的SEI组件和故障机制.
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