Synthesis and electrochemical properties of single-crystalline LiV3O8 nanorods as cathode materials for rechargeable lithium batteries

Abstract

One-dimensional (1D) nanorods of LiV 3 O 8 single crystals have been fabricated by using well-defined home-made VO 2 (B) nanorods as the vanadium resource, combined with a convenient solid-state reaction. The as-obtained LiV 3 O 8 nanorods were characterized by XRD, TEM and SEM, indicating this material was highly crystalline and a single phase. The electrochemical performance of LiV 3 O 8 nanorods as the positive electrode material for rechargeable lithium batteries was investigated, which demonstrated that as-prepared LiV 3 O 8 nanorods exhibited as high as 348 mAh g −1 discharge capacity in first cycle at 20 mA g −1 current density, and still remained at 303 mAh g −1 at 50 mA g −1 afterwards; moreover, until 50 cycles, they kept 315 mAh g −1 , recorded at 50 mA g −1 . All these results imply that single-crystalline 1D nanorods of LiV 3 O 8 are promising cathode material for rechargeable lithium batteries.