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