Molybdenum disulfide grafted titania nanotube arrays as high capacity retention anode material for lithium ion batteries

Abstract

Titania nanotube arrays (TNAs) were grown by anodic oxidation method, and molybdenum disulfide (MoS2) grafted TNAs have been synthesized via one-step hydrothermal process. The MoS2 grafted TNAs (MoS2/TNAs) when employed as an anode material in lithium ion battery, exhibited excellent areal specific capacity (~430 µAh cm−2) at current density of 50 µA cm−2, which is 33% higher as compared to the pure anatase TNAs and 55% higher as compared to MoS2. Moreover, the capacity loss per cycle of MoS2/TNAs (~0.21%) was significantly lower than anatase TNAs (~1.47%), suggesting an increase of capacity retention.