Spinel Li₄Ti₅O₁₂ Nanotubes for Energy Storage Materials

Abstract

We investigated new potential materials, such as hydrogen storage and lithium rechargeable batteries, for application in the field of advanced energy conversion and storage. We were able to synthesize Li4Ti5O12 nanotubes using heat treatment and an alkali-hydrothermal reaction through a simple structural rearrangement, and we examined their H2 storage characteristics and suitability as electrode materials for application in lithium-ion batteries. The Li4Ti5O12 nanotubes could store up to 0.7 wt % H2 at ambient temperature and their reversible capacity was approximately 156 mAh/g at a rate of 0.1C.