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

Abstract

Abstract 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.