Optimizing the charge and ion transport of Nb₂O₅ composite is great significance for developing high-performance fast charge lithium-ion batteries. We designed Nb₂O₅ with oxygen vacancies through a simple and cost-effective hydrothermal and high-temperature calcination treatments. Oxygen vacancies can not only improve the electronic conductivity of the composite, but also effectively provide more active sites and reduce the ion transport barrier, which improved electrochemical reaction kinetics of the Nb₂O₅ composite. Consequently, the synthesized Nb₂O_5-x microflowers delivered a specific capacity of 191.2 mA h g⁻¹ at 1C (a retention of 94% over 200 cycles) and outstanding rate capability (103.3 mA h g⁻¹ at 50C) for lithium storage. Significantly, this work may also broaden the pathways for designing other electrode materials with oxygen vacancies for battery systems.

_{优化Nb 2} O ₅复合材料的充电和离子输运对于开发高性能快速充电锂离子电池具有重要意义。我们通过简单且具有成本效益的水热和高温煅烧处理设计了具有氧空位的 Nb ₂ O _{5 。}氧空位不仅可以提高复合材料的电子电导率，还可以有效地提供更多的活性位点，降低离子传输势垒，从而改善了Nb ₂ O ₅复合材料的电化学反应动力学。因此，合成的 Nb ₂ O _{5- x}微花的比容量为 191.2 mAh g^-1在 1C（在 200 次循环中保持 94%）和出色的锂存储倍率能力（103.3 mA h g ^-1在 50C）。值得注意的是，这项工作还可能拓宽为电池系统设计其他具有氧空位的电极材料的途径。