This study explores how fluoroethylene carbonate (FEC) influences the solid electrolyte interface (SEI) layer formation during battery cycling process. FEC improves SEI properties, producing a uniform, chemically stable layer enriched with lithium fluoride. This enhances mechanical resilience and electrochemical stability. FEC also suppresses electrolyte deformation and decomposition, maintaining its initial state. The findings highlight the significance and comprehension of electrolyte additives, offering an electrolyte research pathway for improving Li-ion battery performance and durability.

中文翻译：

---

了解锂离子电池中石墨和硅阳极上固体电解质界面的形成：探索氟代碳酸亚乙酯的作用

本研究探讨了氟代碳酸乙烯酯 (FEC) 如何影响电池循环过程中固体电解质界面 (SEI) 层的形成。 FEC 改善了 SEI 性能，产生富含氟化锂的均匀、化学稳定的层。这增强了机械弹性和电化学稳定性。 FEC还抑制电解质变形和分解，保持其初始状态。这些发现强调了电解质添加剂的重要性和理解，为提高锂离子电池性能和耐用性提供了电解质研究途径。