Improving the tolerance of Li-ion batteries (LIBs) to extreme temperatures and climates worldwide is vital to their global uptake. However, LIBs call for more strict requirements for the key components when operated in a wide temperature range, especially synchronously desirable interfacial kinetics and thermal stability. Here, a novel multifunctional electrolyte additive, N-tert-butyl-2-thiophenesulfonamide (NTSA), to fabricate stable LIBs under wide-temperature conditions, is reported. The Li-ion solvation structure in the electrolyte is regulated and involves less coordinated solvents (particularly fluoroethylene carbonate), leading to superior Li⁺ transportation. The effective NTSA additive is preferentially decomposed to form a uniform electrode/electrolyte interface with abundant multiphase inorganic LiF, Li₃N, and LiS species simultaneously on the cathode and anode surface. The resulting inorganic-rich interface can not only boost the interfacial Li-ion transfer kinetics at low temperatures but also protect the active material and enhance the thermal stability of the interface and LIB devices at high temperatures. By adopting the NTSA-containing electrolyte, LiCoO₂||ω-Li₃V₂O₅ LIBs can be stably cycled in a wide temperature range between −30 °C and 80 °C, delivering a high capacity of ≈100.1 mAh g⁻¹ (0.2 A g⁻¹) at −20 °C and high capacity retention of 94.5% after 200 cycles (0.5 A g⁻¹) at 55 °C.

中文翻译：

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一种具有溶剂化结构调节和电极/电解质界面操纵的多功能电解质添加剂，可在宽温度范围内实现高性能锂离子电池

提高锂离子电池 (LIB) 对全球极端温度和气候的耐受性对其全球采用至关重要。然而，锂离子电池在较宽的温度范围内运行时，对关键部件提出了更严格的要求，尤其是同步需要的界面动力学和热稳定性。在这里，报道了一种新型多功能电解质添加剂N-叔丁基-2-噻吩磺酰胺 (NTSA)，可在宽温条件下制造稳定的 LIB。电解质中的锂离子溶剂化结构受到调节，涉及较少的配位溶剂（特别是氟代碳酸亚乙酯），导致优异的 Li ⁺运输。有效的 NTSA 添加剂优先分解，形成均匀的电极/电解质界面，同时在阴极和阳极表面具有丰富的多相无机 Li  F、Li ₃ N 和 Li  S 物种。由此产生的富含无机物的界面不仅可以提高低温下的界面锂离子转移动力学，还可以保护活性材料并增强界面和 LIB 器件在高温下的热稳定性。采用含NTSA的电解液，LiCoO ₂ ||ω-Li ₃ V ₂ O ₅^{LIB 可以在-30 °C 和80 °C 之间的宽温度范围内稳定循环，在-20 °C 时提供≈100.1 mAh g −1} (0.2 A g ⁻¹ )的高容量和94.5% 的高容量保持率在 55 °C 下进行 200 次循环 (0.5 A g ⁻¹ ) 后。