Stable cycling of rechargeable Li-ion batteries (LIBs) at low temperatures is important for cold-climate and high-altitude applications, but it is plagued by severe power loss. Here, we report on an effective synergy to boost the low-temperature performance of LIBs, whereby highly stable ω-Li₃V₂O₅ anodes with high Li⁺-insertion kinetics are combined with fluorine-containing additive (FCA) electrolytes. The FCA in the electrolyte promotes the formation of the stable and low-resistance LiF-rich solid-electrolyte interface (SEI) layer on the anode surface. The disordered ω-Li₃V₂O₅ electrode combined with the FCA electrolyte can be reversibly cycled over 1000 cycles at room temperature and delivers a highly stable capacity of 201.6 mAh g^–1 at 0.1 A g^–1 at −20 °C, retaining 70.0% of its room-temperature capacity. Furthermore, the LiMn₂O₄|ω-Li₃V₂O₅ full cell with the FCA electrolyte exhibiting superior low-temperature performances is demonstrated, which is much better than conventional LIBs.

中文翻译：

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高度可逆的 ω-Li3V2O5 阳极和含氟添加剂电解质的协同作用有望实现耐低温的锂离子电池

可充电锂离子电池 (LIB) 在低温下的稳定循环对于寒冷气候和高海拔应用很重要，但它受到严重功率损失的困扰。在这里，我们报告了一种有效的协同作用，以提高 LIB 的低温性能，从而将具有高 Li ⁺插入动力学的高度稳定的 ω-Li ₃ V ₂ O ₅负极与含氟添加剂 (FCA) 电解质相结合。电解质中的 FCA 促进了阳极表面上稳定且低电阻的富含 LiF 的固体电解质界面 (SEI) 层的形成。无序 ω-Li ₃ V ₂ O ₅与 FCA 电解质结合的电极可以在室温下可逆循环超过 1000 次，并在 -20°C 下以 0.1 A g ^–1提供 201.6 mAh g ^–1的高度稳定容量，保持其室温容量的 70.0%。此外，证明了具有 FCA 电解质的 LiMn ₂ O ₄ |ω-Li ₃ V ₂ O ₅全电池表现出优异的低温性能，这比传统的 LIB 好得多。