In this work, we presented a modified sol-gel method to synthesize the nanocrystalline composite composed of Li₄Ti₅O₁₂ (LTO) and rutile-TiO₂, and utilized it as an efficient anode material for lithium-ion battery application. The detailed structural studies revealed that the spherical shaped rutile nanoparticles of ∼10–20 nm were homogeneously distributed on the surface of LTO and therefore the mesoporous/microporous nature of the two-phase Li₄Ti₅O₁₂-TiO₂ (LTO-T) was exhibited. According to a series of galvanostatic charge/discharge tests, the LTO-T electrode with the mesoporous/microporous microstructure demonstrated the improved electrochemical performance, especially at a high C rate. Interestingly, the LTO-T electrode achieved an excellent specific capacity of 175 mAh g⁻¹ and 155 mAh g⁻¹ even after 50 charge/discharge cycles at 1C and 5C, respectively.

在这项工作中，我们提出了一种改进的溶胶-凝胶法合成由Li ₄ Ti ₅ O ₁₂ (LTO) 和金红石-TiO ₂组成的纳米晶复合材料，并将其用作锂离子电池应用的高效负极材料。详细的结构研究表明，~10-20 nm 的球形金红石纳米颗粒均匀分布在 LTO 表面，因此两相 Li ₄ Ti ₅ O ₁₂ -TiO _{2的介孔/微孔性质}(LTO-T) 展出。根据一系列恒电流充电/放电测试，具有介孔/微孔微观结构的 LTO-T 电极表现出改善的电化学性能，尤其是在高 C 倍率下。有趣的是，即使在 1C 和 5C 的 50 次充电/放电循环后，LTO-T 电极也分别获得了 175 mAh g ^-1和 155 mAh g ^-1的优异比容量。