Electrodeposition route to synthesize SnO2 microparticles as an anode material for Li-ion batteries

Abstract

Tin dioxide (SnO2) samples were prepared by direct current electrodeposition method and their electrochemical properties as anode materials for Li-ion battery were investigated with Li as counter electrode. The as-prepared SnO2 powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and N2-adsorption-desorption experiments. It was found that SnO2 can be synthesized by one-step electrodeposition and the crystallinity improved markedly after annealed. The samples consisted of uniform spherical SnO2 crystal particles with size in the order of 100∼200nm. After dried at 120°C and annealed at 400°C, 600°C, 800°C respectively, the samples were used as anode materials for Li-ion battery. The results showed that the samples annealed at 600°C had a high coulombic efficiency and had the best electrochemical performance.