辉光放电光谱法检测死后分析中的锂沉积

ECS Electrochemistry Letters Pub Date : 2015-01-01 DOI:10.1149/2.0041509EEL

N. Ghanbari, T. Waldmann, M. Kasper, P. Axmann, M. Wohlfahrt‐Mehrens

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引用次数: 51

摘要

采用辉光放电发射光谱法(GD-OES)检测和量化石墨电极上锂沉积随深度的变化。采用石墨阳极的商用电池在5°C下循环镀锂。并与形成固体电解质界面(SEI)的石墨电极进行了比较。O、Li和C的深度剖面在厚度和Li含量方面表现出不同的表面效应，在Li沉积的情况下，Li浓度明显更高。

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Detection of Li Deposition by Glow Discharge Optical Emission Spectroscopy in Post-Mortem Analysis

Glow discharge optical emission spectroscopy (GD-OES) is employed to detect and quantify Li deposition as a function of depth on graphite electrodes. Commercial cells with graphite anodes were subject to Li plating by being cycled at 5°C. A comparison is made with graphite electrodes with solid electrolyte interphase (SEI) after formation. Depth profiles of O, Li, and C show different surface effects in terms of thickness and Li content, with significantly higher Li concentration in the case of Li deposition.

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来源期刊

ECS Electrochemistry Letters ELECTROCHEMISTRY-MATERIALS SCIENCE, MULTIDISCIPLINARY

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