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GCMS analysis of Fluorophosphates as decomposition products in Lithium Battery Electrolytes

The electrolyte solution is a crucial part of a typical Lithium- ion battery (LIB), consisting of Li salt (e.g., LiPF 6), organic carbonates, and additives to ensure a stable transport of Li ions during charging and discharging processes. A significant part of battery aging can be considered as a result of the decomposition of the electrolyte. At the end of these chemical and electrochemical processes oligomeric organic compounds (Figure 1) [1] and organophosphates [2,3] could be detected. Especially fluor containing organophosphates are of interest due to their potential neurotoxicity.

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