[Ni(CH₃COO)₂＋PVP]@[SnCl₄＋PVP]@[Zn(CH₃COO)₂＋PVP]@[Ti(OC₄H₉)₄＋CH₃COOH＋PVP] precursor composite cables have been fabricated through modified electrospinning equipment via electrospinning technique. NiO@SnO₂@Zn₂TiO₄@TiO₂ coaxial tetralayered nanocables were obtained by calcination of the relevant precursor composite cables. The samples were characterized by thermogravimetric-differential thermal analysis (TG-DTA), X-ray diffractometry (XRD), fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Results showed that the samples are coaxial tetralayered nanocables. The core layer is NiO, and its diameter is ca. 35～55 nm. The second layer is SnO₂, and its thickness is 30～50 nm. The third layer is Zn₂TiO₄, and its thickness is 25～40 nm. The outer layer is TiO₂, and its thickness is 40～90 nm. Formation mechanism of coaxial tetralayered nanocables was discussed.

Key words: NiO@SnO₂@Zn₂TiO₄@TiO₂, coaxial tetralayered nanocables, electrospinning, formation mechanism