Preparation and Novel Lithium Intercalation Properties of Titanium Oxide Nanotubes

Abstract

Anatase nanotubes were prepared by annealing protonic titanate nanotube precursor. Through galvanostatic investigation, the nanotubes as electrode exhibited high discharge capacity with in the first cycle and held a larger capacity in continuous cycles compared with normal crystalline . Up to 100% columbic efficiency hints of the perfect reversibility of lithium intercalation into and extraction from titania nanotubes and consequent extraordinary cycling stability. It is obvious that a titania nanotube electrode possesses large lithium intercalation capacity, high rate capability, and excellent cycling stability. In addition, the capacity decreasing in the first several cycles is investigated by cyclic voltammetric methods.