Abstract Electrolyte solutions have vital function in lithium-ion batteries. Due to their modular composition, there is a broad variety of electrolyte component combinations. In this work, we present electrochemical results on newly investigated electrolyte solution components. The standard electrolyte salt in commercial batteries, LIPF 6 , was replaced by new imide and sulfonate anion based salts, with enhanced stability. The use of propylene carbonate was enabled by the application of new SEI forming electrolyte additives. Electrolyte solvents, such as adiponitrile and γ-butyrolactone were investigated in combination with LiBF 4 as electrolyte salt. In order to evaluate these materials, various electrochemical techniques like galvanostatic cycling, conductivity and electrochemical stability window detection, cyclic voltammetry, etc. were applied. Furthermore, the electrode/electrolyte interfaces and interphases were studied via spectroscopic and spectrometric techniques.

中文翻译：

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用于锂离子电池的新型电解质、溶剂和 SEI 添加剂的研究：系统电化学表征和光谱方法的详细分析

摘要 电解液在锂离子电池中起着至关重要的作用。由于它们的模块化组成，有各种各样的电解质组分组合。在这项工作中，我们展示了新研究的电解质溶液成分的电化学结果。商用电池中的标准电解质盐 LIPF 6 被新的基于酰亚胺和磺酸盐阴离子的盐取代，具有更高的稳定性。碳酸亚丙酯的使用是通过应用新的 SEI 形成电解质添加剂实现的。电解质溶剂，如己二腈和γ-丁内酯，与作为电解质盐的LiBF 4 结合进行了研究。为了评估这些材料，应用了各种电化学技术，如恒电流循环、电导率和电化学稳定性窗口检测、循环伏安法等。