One-pot synthesis of mixed-valence MoO x on carbon nanotube as an anode material for lithium ion batteries

A mixed-valence MoO (x) /carbon nanotube nanocomposite was synthesized using a one-pot microwave-assisted hydrothermal reaction in which 5 nm MoO (x) nanoparticles were coated on the surfaces of carbon nanotube. The MoO (x) nanoparticles in the nanocomposite had mixed Mo4+ and Mo6+ valence states. Thus, the nanocomposite showed a discharge behavior corresponding to both MoO2 and MoO3. The nanocomposite had a reversible discharge capacity of 900 mAh g(-1) at a current density of 90 mA g(-1), and could deliver discharge capacities of 770, 700, and 570 mAh g(-1) at current densities of 450, 900, and 1800 mA g(-1), respectively.