MoO3-x Nanowire Arrays As Stable and High-Capacity Anodes for Lithium Ion Batteries

In this study, vertical nanowire arrays of MoO3-x grown on metallic substrates with diameters of similar to 90 nm show high-capacity retention of similar to 630 mAhg(-1) for up to 20 cycles at 50 mAg(-1) current density. Particularly, they exhibit a capacity retention of similar to 500 mAhg(-1) in the voltage window of 0.7-0.1 V, much higher than the theoretical capacity of graphite. In addition, 10 nm Si-coated MoO3-x nanowire arrays have shown a capacity retention of similar to 780 mAhg(-1), indicating that hybrid materials are the next generation materials for lithium ion batteries.