A nanocomposite electrode made by electrochemical deposition of Sn on TiO2 nanotube (ntTiO(2)) layers and subsequent thermal oxidization to SnO is proposed. X-ray diffraction patterns confirmed the presence of SnO. The spongelike structure of SnO combined with the presence of titania nanotubes is beneficial to buffer large volume changes during reaction with lithium. Galvanostatic discharge/charge tests have been carried out to characterize the electrochemical properties. The electrochemical performance shows that nanocomposite SnO-ntTiO(2) is a promising alternative negative electrode for Li-ion microbatteries.