Abstract In this study, a simple targeted etching approach was developed for the controlled fabrication of mesoporous Li4Ti5O12 (LTO) hollow spheres, which can be used as an advanced anode material in lithium-ion batteries. We investigated the controllable synthesis of mesoporous LTO hollow spheres with various hollow structures based on different compositions, such as yolk-shelled and hollow structures with porous shells. The as-prepared mesoporous LTO hollow spheres had several main structural advantages, including high intrinsic interfacial reactivity with the electrolyte due to a high specific surface area, extra space for the storage of lithium ions, and reduced transport path lengths for both e– and Li+, thereby leading to excellent rate performance. Moreover, the high reversible capacity of the mesoporous LTO hollow spheres was 229.2 mA h g−1 after 1000 cycles at 0.5C and the highest rate discharge capacity was 114.2 mA h g−1 at 10 C, thereby indicating the outstanding cycle stability and rate performance of LTO as an anode in lithium-ion batteries.

中文翻译：

---

高倍率锂离子电池介孔Li4Ti5O12空心球的构建

摘要 在本研究中，开发了一种简单的靶向蚀刻方法，用于可控制备介孔 Li4Ti5O12 (LTO) 空心球，该空心球可用作锂离子电池的先进负极材料。我们研究了基于不同成分的具有各种空心结构的介孔 LTO 空心球的可控合成，例如蛋黄壳和具有多孔壳的空心结构。所制备的介孔 LTO 空心球具有几个主要的结构优势，包括由于高比表面积与电解质的高内在界面反应性、用于存储锂离子的额外空间以及减少了 e- 和 Li+ 的传输路径长度，从而导致出色的速率性能。此外，介孔 LTO 空心球的高可逆容量为 229。