TiO2 nanowire arrays with mixed phases directly grown on Ti foil and their electrochemical properties as anode material for Li ion batteries.

TiO₂ nanowire arrays with mixed phases are directly grown on Ti foil using a facile hydrothermal method. X-ray diffraction and Raman spectroscopy analyses indicate that the hybrid samples consist of mixed crystallographic phases of anatase and TiO₂(B). Morphological characterisation shows that the samples have a unique nanostructure with ultra long, fine and uniform nanowires. Compared with the standard Degussa P25 TiO₂ nanoparticles, the hybrid TiO₂ nanowire arrays exhibit larger reversible capacity, improved cycling stability and rate capability, which can be attributed to their hybrid nanowire array structure. [ABSTRACT FROM AUTHOR]