This paper investigates the effect of water content on lithium-ion battery electrolytes with particular emphasis on the degradation of lithium hexafluorophosphate, a commonly used salt in commercial electrolytes. The study addresses various degradation mechanisms caused by water in a battery system. In addition, the research utilizes electrochemical techniques to detect water and associated changes in electrochemical performance of the cell. The electrochemical water detection method investigated is very fast. The lower detection limit was not tested, but contamination of 250 ppm can be reliably detected. It can be used, for example, in experimental research to determine the purity and quality of the electrolyte used.

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中文翻译：

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LiPF6基电解液中水分检测的基本方法

本文研究了水含量对锂离子电池电解液的影响，特别关注六氟磷酸锂（商业电解液中常用的盐）的降解。该研究解决了电池系统中水引起的各种退化机制。此外，该研究利用电化学技术来检测水和电池电化学性能的相关变化。研究的电化学水检测方法非常快。未测试检测下限，但可以可靠检测 250 ppm 的污染。例如，它可用于实验研究，以确定所用电解质的纯度和质量。

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