Electrochemical Properties of Rutile TiO2 Nanorod Array in Lithium Hydroxide Solution

Abstract

In this paper, rutile TiO₂ nanorod arrays are fabricated by a template-free method and proposed as a promising anode for aqueous Li-ion battery. The as-prepared TiO₂ nanorod arrays exhibited reversible Li-ion insertion/extraction ability in aqueous LiOH electrolyte. Moreover, galvanostatic charge/discharge test results demonstrated that the reversible capacity of TiO₂ nanorods could reach about 39.7 mC cm⁻², and 93.8 % of initial capacity was maintained after 600 cycles at a current density of 1 mA cm⁻² (=240 C rate), indicating excellent cycling stability and rate capability.