固体电解质的相间和接口对坑核的作用

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Hanrui Zhang¹, Weixi Tian², Yanjun Guo¹

¹John and Willie Leone Family Department of Energy and Mineral Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.

ACS nano

|January 17, 2026

概括

了解 (Li) 金属阳极插孔是更安全,更持久电池的关键. 这项研究揭示了固体电解质介相 (SEI) 和电荷转移动力学如何影响坑形成,指导更好的电解质设计.

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:

(Li) 金属阳极插孔显著影响金属电池的循环性和安全性.
电极/电解质介相对核形成的影响尚不清楚.
解离固体电解质间相 (SEI) 和电荷转移 (CT) 效应至关重要.

研究的目的:

调查SEI和界面电荷转移在金属阳极坑核化中的不同作用.
了解电解质组成如何影响坑道形态和运动.
为设计先进的金属电池提供洞察力.

主要方法:

在金属阳极上进行了静电和静电剥离实验.
在不同的电解质条件下 (乙与碳酸盐) 对坑尺寸,密度和核化模式的分析.
插入行为与SEI属性和界面电荷转移动学的相关性.

主要成果:

由于较低的超电位,以太电解质在静电剥离下产生了更大,更稀疏的坑.
潜在静态剥离显示了以太电解质中的较小坑和更高的核化密度,表明核化速率更快.
快速的电荷转移动力学 (以太电解质) 促进了二维核化,而缓慢的动力学 (碳酸电解质) 支持了三维核化.
首先,SEI主要影响了剥离过量的潜力和坑道形态.

结论:

界面电荷转移动力学在确定阳极插孔模式和动力学方面至关重要.
SEI的组成影响了超电位和坑形态,但电荷转移决定了核化维度.
这项研究澄清了SEI和CT的作用,有助于为下一代金属电池设计电解质和循环配置文件.

关键词:

2D核化是指二维的核化.3D核化3D核化是什么转移费用 (CT) 是指转移的费用.的核化坑洞的.固体电解质相间 (SEI) 阶段

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