Pomegranate‐like high density LTO anode material for lithium‐ion batteries

In order to improve the rate performance and reduce the cost lithium ion anode, the Li4Ti5O12@TiO2 (LTO-TO) was prepared by a facile hydrothermal reaction method with a micro-scale TiO2 as the precursor. The morphologies and microstructures of the pomegranate-like LTO-TO were examined by scanning electron microscopy and transition electron microscopy. The results demonstrate that the nano-LTO particles are located on the surface of the micro TiO2. The electrochemical properties of the LTO-TO composites were characterized by galvanostatic charge/discharge. The as-prepared composites present a high capacity of 157.3 mAh g−1 at 0.5 C. Even at a high current density of 10 C, it can still maintain a high capacity of 105.4 mAh g−1 and remains 92.8% (95 mA g−1) after 450 cycles. These results indicate that the as-prepared LTO nano/micro-sphere may be a potential anode material for lithium-ion batteries.