TiO<2> of nano hollow spiky ball structure, preparation method and application in photo anode of solar cell

Abstract

The invention provides TiO<2> of a nano hollow spiky ball structure, a preparation method and an application of the TiO<2> serving as a dye-sensitized solar cell photo anode material, and belongs to the field of dye-sensitized solar cells. Firstly, a SiO<2> nanoball template is synthetized, then the surface of a SiO<2> nanoball is wrapped with a TiO<2> layer, ultimately, the SiO<2> template is removed in a one step through a hydrothermal reaction of the SiO<2> nanoball and NaOH water solutions with a certain concentration, the surface of TiO<2> is effectively corroded, and the TiO<2> material of the nano hollow spiky ball structure is obtained. The solar cell formed by assembling a photo anode film prepared from the TiO<2> material can obtain a photoelectric converting efficiency of 5.48%. According to the preparation method, production efficiency is high, cost is low, the method is simple, an experiment cycle is short, large-scale production is easy to achieve, and stability of the battery cell is improved.

Description

technical field [0001] The invention belongs to the technical field of dye-sensitized solar cells, in particular to a TiO nanometer hollow barbed ball structure 2 , preparation method and its application as photoanode material of dye-sensitized solar cell. Background technique [0002] Environmental pollution and lack of renewable energy are two major challenges facing mankind. As the most important renewable green energy, solar energy has attracted more and more people's attention. Among them, dye-sensitized solar cells have quickly become the representative of the new generation of solar cells due to their low power consumption, simple process, environmental friendliness and high conversion efficiency. In the past two decades, scientists have done a lot of research, especially the research on nanoporous titanium dioxide materials has made many breakthroughs. As we all know, titanium dioxide nanocrystalline film is used as a battery photoanode, and its crystal structure,...

AI Technical Summary

Problems solved by technology

Although the one-dimensional nanostructured titanium dioxide has the advantages of low transfer resistance, long electron lifetime, and few grain boundaries as the bottom layer of the photoanode layered structure, but its light scattering ability is low, and because the specific surface area is relatively small compared with the three-dimensional nanostructure, so The dye adsorption ability is weak, which limits the further improvement of its photoelectric performance

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