Method for preparing composite material for nanometer nickel/titanium dioxide nanotube array

The invention relates to a method for preparing a composite material for a nanometer nickel/titanium dioxide nanotube array by means of loading nickel nanometer grains on a titanium dioxide tube array through pulse electrodeposition. Firstly, metal titanium is used as a base; the highly-orderly nanometer titanium dioxide tube array is prepared by utilizing an anodic oxidation method; the properties of a titanium dioxide semiconductor, as well as surface electronic transmission capability, are improved after roasting; then the nickel nanometer grains are uniformly loaded on the TiO2 nanotube array by means of the pulse electrodeposition; wherein the grain diameters are controllable, the grains are uniform in terms of size, and the load capacity can also be controlled. The composite material for the Ni/TiO2 nanotube array, which is prepared according to the method, cannot only be applied in a super-capacitor but also be applied in the aspects such as photocatalysis for hydrogen generation, catalysts, magnetic materials, etc.