Niobium tungsten oxide Nb₁₆W₅O₅₅ is a competitive anode for lithium-ion batteries, while seldom research on low-temperature electrochemical properties. In this paper, Nb₁₆W₅O₅₅ is synthesized by solid phase reaction and the effects of operation temperature (25, 0 and −20 °C) on the coulombic efficiency, cycling stability, rate capacity and crystal structure are studied in detail. At 25 °C, Nb₁₆W₅O₅₅ electrode can give good cycling stability of 184 mAh g⁻¹ after 404 cycles and rate capacity of 101 mAh g⁻¹ at 4000 mA g⁻¹. By contrast, the electrochemical properties decrease obviously at subambient temperatures. Electrochemical impedance spectroscopy reveal that the sharp increase of the charge-transfer impedance and the decrease of the solid-phase Li⁺ diffusion coefficient are the essential factors leading to the deterioration of low temperature performances. However, the low temperature mainly affects specific capacities and rate performances, but has little effect on cyclic stability and crystal structure of Nb₁₆W₅O₅₅ electrode, indicated by ex-situ X-ray diffraction analysis. These results provide some new insights for the practical application of Nb₁₆W₅O₅₅ anode.

氧化铌钨Nb ₁₆ W ₅ O ₅₅是锂离子电池的有竞争力的阳极，但很少研究低温电化学性能。本文通过固相反应合成了Nb ₁₆ W ₅ O ₅₅，并详细研究了操作温度（25、0和-20°C）对库仑效率，循环稳定性，倍率容量和晶体结构的影响。在25℃，NB ₁₆ w ^ ₅ ø ₅₅电极可以给的184毫安克良好的循环稳定性^-1 404个周期和101毫安克率容量之后^-1在4000毫安克^-1。相反，在低于室温的温度下，电化学性能明显降低。电化学阻抗谱表明，电荷转移阻抗的急剧增加和固相Li ⁺扩散系数的降低是导致低温性能下降的重要因素。然而，低温通过异位X射线衍射分析表明，低温主要影响比容量和倍率性能，但对Nb ₁₆ W ₅ O ₅₅电极的循环稳定性和晶体结构影响很小。这些结果为Nb ₁₆ W ₅ O ₅₅阳极的实际应用提供了一些新见识。