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

Abstract In order to improve the rate performance and reduce the cost lithium ion anode, the Li 4 Ti 5 O 12 @TiO 2 (LTO‐TO) was prepared by a facile hydrothermal reaction method with a micro‐scale TiO 2 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 TiO 2 . 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.