La-doped SnO₂ synthesis and its electrochemical property

Tin dioxide (SnO₂) and La-doped (1, 5, 10 in mass ratio) SnO₂ samples were prepared via a hydrothermal method. The as-prepared powders were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Results showed that the particle size of SnO₂ decreased gradually with the increase of the doped La element. When used as anode materials of Li ion battery, the La-doped samples exhibited better cycling performance than the pure SnO₂, and the cycling performance of the La-doped samples got better and better with the increase of the doped La. The better electrochemical performance of the doped material could be attributed to the doping of La element, which not only enabled SnO₂ powders to have a good dispersivity but also reduced their particle size.