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化伊米达索利酸作为-薄接口修复剂用于金属电池

Yuchen Yang¹, Tevin Li², Hou Runqiao¹

¹Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai 200433, China.

ACS applied materials & interfaces

|September 9, 2025

概括

研究人员开发了一种化离子液体,用于修复金属电池中的-无接口. 这一策略有效地抑制了树的生长,从而实现了高库伦比效率和稳定的电池循环.

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:

金属电池具有高能量密度,但受树增长的影响,阻碍了实际应用.
电解质中的含的离子可以形成保护性固体电解质界面 (SEI),但它们在阳极上的耗尽会导致不均的SEI形成.

研究的目的:

为应对-薄接口和金属电池中不均的SEI形成的挑战.
开发一种有效的接口修复剂来稳定阳极.

主要方法:

使用一种化离子液体,2--1,3-二甲基化化 ([f-Im+][PF6-]),作为一种F-lean接口修复剂.
研究了在沉积过程中在Li-金属阳极上的[f-Im+]的迁移和分解行为.
进行理论计算以了解替代在SEI形成中的作用.

主要成果:

拟议的[f-Im+][PF6-]有效地修复了F-lean接口,形成了一个密集且富含的SEI层.
化伊米达佐利酸盐被发现是热敏感的,分解形成富含LiF的SEI.
在Lithium-based NCM811全细胞中实现了超高的库伦比效率 (>99.5%) 沉积和稳定的循环 (>100次).

结论:

开发的F-lean接口修复剂通过形成强大的LiF丰富的SEI,成功地抑制了树突.
这种方法提高了金属电池的稳定性和效率,为其实际应用铺平了道路.

关键词:

金属电池金属电池在NCM81111中,使用的是NCM811 化伊米达佐利二酸盐的含量是多少 -无接口的接口维修代理人维修代理人

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相关概念视频

Ionic Bonding and Electron Transfer

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.