Facile preparation of 3-dimensional interweaved anatase TiO2 hollow nanowires and its lithium storage properties

Abstract

To overcome the issue of inferior practical capacity and electronic conductivity for titanium dioxide (TiO2) anode materials in lithium-ion batteries, an effective strategy is explored to fabricate a nanostructured TiO2 with large specific surface area and confined dimension, considering the nanostructure to achieve increased contact interface between the active materials and the electrolyte, restricted agglomeration of TiO2, enhanced structure stability, shortened diffusion distance of lithium-ion and electron, contributing to desirable electrochemical properties. Herein, we have prepared an intriguing nanostructure of 3-dimensional interweaved anatase TiO2 hollow nanowires (denoted as HNW TiO2) by a facile strategy. When tested as potential anode materials for lithium-ion batteries, this nanostructured HNW TiO2 delivers a reversible capacity of 180.8, 153.3 mAh g−1 at current rate of 0.2C and 2C, respectively, indicating good lithium storage performance, which should be benefited from its unique architecture.