SiO_x has recently attracted considerable attention as an electrode material for lithium-ion batteries (LIBs) due to its high energy density. However, the constant pulverization of SiO_x material from severe volume expansion/extraction significantly degrades the cycling performance of the cell. Here, the interfacial stability of SiO_x anode materials is enhanced by adding a 1,1,2,2-tetrafluoroethylene-2,2,3,3-tetrafluoropropyl ether (TFE) electrolyte to form artificial solid-electrolyte interphases (SEIs) on the surface of the SiO_x anode. Electrochemical reduction of the TFE additive results in a robust LiF-based SEI layer that adequately stabilizes the interfacial characteristics of the SiO_x anode. Electrochemical cycling confirms that adding 10 wt% TFE to the standard electrolyte significantly enhances the life span of a cell assembled with SiO_x/NCM811 electrode materials. Scanning electron microscopy, X-ray photoelectron spectroscopy, and electrochemical impedance spectroscopy investigations demonstrates that artificially produced SEI layers efficiently prevent the pulverization of SiO_x anode materials caused by electrolyte degradation in the cell.

SiO _x最近由于其高能量密度而作为锂离子电池 (LIB) 的电极材料引起了相当大的关注。然而，由于严重的体积膨胀/萃取不断地粉碎 SiO _x材料会显着降低电池的循环性能。在这里，通过添加 1,1,2,2-四氟乙烯-2,2,3,3-四氟丙醚 (TFE) 电解质以在表面形成人造固体电解质界面 (SEI) 来增强SiO _x负极材料的界面稳定性SiO _x阳极的表面。TFE 添加剂的电化学还原产生了坚固的基于 LiF 的 SEI 层，该层充分稳定了 SiO _{x的界面特性}阳极。电化学循环证实，向标准电解质中添加 10 wt% TFE 可显着提高使用 SiO _x /NCM811 电极材料 组装的电池的寿命。扫描电子显微镜、X 射线光电子能谱和电化学阻抗谱研究表明，人工产生的 SEI 层有效地防止了由电池中的电解质降解引起的 SiO _{x阳极材料的粉化。}