Method for preparing anode titanium oxide nanoflower electrode

Abstract

The invention discloses a method for preparing an anode titanium oxide nanoflower electrode. The method comprises the steps that firstly, through an anodic oxidation method, a layer of anode titaniumdioxide nanotube array film is prepared on the surface of a titanium substrate, and then the titanium dioxide nanotube array film is immersed in a phosphoric acid aqueous solution for long-time normal-temperature soaking so as to obtain the anode titanium oxide nanoflower electrode. A prepared titanium oxide nanoflower is composed of nano-petals with the average thickness of 10-20 nm and the widthranging from 250 nm to 1 micron. The preparation method avoids application and high-temperature treatment processes of heavy metal ions, tetrabutyl titanate, organic solvents and other non-environment-friendly reagents. Compared with existing methods, the method is easier and more feasible, saves energy, and is environmentally friendly, low in cost and high in controllability.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry and relates to a method for preparing an anodized titanium nano flower electrode. Background technique [0002] As a semiconductor material, titanium dioxide is widely used in solar cells, supercapacitors, electrocatalysis and water splitting due to its unique physical and chemical properties. In recent years, it has attracted widespread attention as a promising electrode material for supercapacitors, and its morphology, size and microstructure all have an important impact on its supercapacitor performance. The preparation of nanostructured titanium dioxide electrode materials is an effective way to increase its energy density and power density. For this reason, various methods for preparing nanostructured titanium dioxide have been developed, such as nanotubes, nanowires, nanosheets and nanoflowers. Nanostructured titania electrode material. Among them, titanium dioxide with nanoflower...

AI Technical Summary

Problems solved by technology

The use of heavy metal ions will cause water pollution, which is not conducive to environmental protection; tetrabutyl titanate is easy to hydrolyze, and the preparation process has strict requirements on the environment; organic solvents such as octanol are also not conducive to environmental protection; these methods require high temperatures higher than 100 ° C Heating for a long time under the environment, the cost is high; the prepared TiO 2 Nanoflowers are mostly in the form of powder or particles, and cannot be directly used as electrodes for supercapacitors or other devices

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