Synthesis of hollow nickel oxide nanotubes by electrospinning with structurally enhanced lithium storage properties

摘要

We report a simple electrospinning synthesis method to prepare hollow NiO nanotubes composed of interconnected nanoparticles. The synthesized NiO nanotubes show diameters of 250-300 nm. As an anode material for lithium-ion batteries, the resultant hollow NiO nanotubes exhibit high capacity and good cycle stability (726 mA hg~(-1) at 0.2C up to 150 cycles), as well as good rate capability. The hollow nanotube structure possesses the following features: high NiO-electrolyte contact area, fast Li ion diffusion and better accommodation of volume change. It suggests that the hollow NiO nanotube is a promising anode material for high energy density lithium-ion batteries.