Preparation of porous SnO₂/ZnO nanotubes via a single spinneret electrospinning technique as anodes for lithium ion batteries

The novel SnO₂/ZnO nanotubes had been synthesized by a simple electrospinning method. The morphology and structure of the as-prepared SnO₂/ZnO nanotubes were characterized by SEM and TEM, which suggested the hollow structure of the nanotubes with average diameters ranged from 200 to 300 nm. The SnO₂/ZnO nanotubes show high initial discharge capacity of 1932 mA h g⁻¹ and maintain a reversible capacity of 584.5 mA h g⁻¹ even after 45 cycles at a current density of 168 mA g⁻¹, endowing its potential application in lithium ion batteries.