以三聚氰胺为氮源合成了氮掺杂改性的钛酸锂（LTO-0.1N）材料，并通过扫描电子显微镜（SEM）和激光颗粒粒度分析检测材料的微观形貌和宏观颗粒。结果表明，与原始的LTO相比，合成的N掺杂LTO-0.1N样品显著改善了其电化学性质。LTO-0.1N的放电比容量在0.2 C时为172 mAh/g，在10 C时为120 mAh/g；LTO在0.2 C时为150 mAh/g，10 C时为98 mAh/g。氮掺杂改性的LTO-0.1N材料的电荷转移阻抗为375.58 Ω，没有改性的LTO的电荷转移阻抗为2 008.27 Ω。电荷转移阻抗的显著减小是氮掺杂改性LTO-0.1N材料电化学性能提高的原因之一。

A nitrogen-doped modified lithium titanate (LTO-0.1N) material is synthesized using melamine as a nitrogen source,and its microscopic morphology and macroscopic particles are detected by scanning electron microscopy (SEM) and laser particle size analysis.The results show that the synthesized N-doped LTO-0.1N sample shows significantly-improved electrochemical properties compared to the original LTO.The discharge specific capacity of LTO-0.1N is 172 mAh·g^-1 at 0.2 C and 120 mAh·g^-1 at 10 C,that for LTO is 150 mAh·g^-1 at 0.2 C and 98 mAh·g^-1 at 10 C.The charge transfer impedance of the N-doped modified LTO-0.1N material is 375.58 Ω,and that of the unmodified LTO is 2 008.27 Ω.A significant reduction in charge transfer resistance may be one of the reasons for the improved electrochemical performance of nitrogen doped modified LTO-0.1N material.