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Methods for preparing porous spherical titanium dioxide and light positive pole

A titanium dioxide, porous spherical technology, applied in the field of dye-sensitized solar cells, can solve the problems of easy particle agglomeration and low DSC efficiency, and achieve the effects of good repeatability, simple operation and improved efficiency

Inactive Publication Date: 2011-08-31
DONGGUAN ANWELL DIGITAL MASCH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of suspended P25 and submicron titanium dioxide particles, which are easy to agglomerate, the efficiency of DSC prepared is generally not high.

Method used

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  • Methods for preparing porous spherical titanium dioxide and light positive pole
  • Methods for preparing porous spherical titanium dioxide and light positive pole
  • Methods for preparing porous spherical titanium dioxide and light positive pole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method of porous spherical titanium dioxide, comprising the following specific steps:

[0020] Add 6 grams of hexadecylamine into 600 milliliters of absolute ethanol, ultrasonically disperse until completely dissolved; add 2.5 milliliters of potassium chloride aqueous solution with a molar concentration of 0.1 mol / liter while stirring to obtain a mixed solution I; Add 13 grams of isopropyl titanate, stir to obtain a milky white suspension, let stand, separate, and obtain the solid in the suspension; dry the solid in the suspension to obtain a titanium dioxide precursor, which is a white powder. The yield is not lower than 90%.

[0021] Weigh 3.2 grams of titanium dioxide precursor and disperse it in a mixture of 40 milliliters of absolute ethanol, 20 milliliters of deionized water and 1 milliliter of ammonia water with a mass concentration of 25%, and transfer it to a closed reaction kettle, heat it to 160 ° C, and react at a constant temperature 16 hours...

Embodiment 2

[0023] A method for preparing a dye solar cell photoanode with porous spherical titanium dioxide as slurry, comprising the steps of:

[0024] Add 6 grams of hexadecylamine into 600 milliliters of absolute ethanol, ultrasonically disperse until completely dissolved; add 2.5 milliliters of potassium chloride aqueous solution with a molar concentration of 0.1 mol / liter while stirring to obtain a mixed solution I; Add 13 grams of isopropyl titanate, stir to obtain a milky white suspension, let stand, separate, and obtain the solid in the suspension; dry the solid in the suspension to obtain a titanium dioxide precursor, which is a white powder. The yield is not lower than 90%.

[0025] Weigh 3.2 grams of titanium dioxide precursor and disperse it in a mixture of 40 milliliters of absolute ethanol, 20 milliliters of deionized water and 1 milliliter of ammonia water with a mass concentration of 25%, and transfer it to a closed reaction kettle, heat it to 160 ° C, and react at a cons...

Embodiment 3

[0029] A dye-sensitized solar cell, the dye-sensitized solar cell includes an anode and a cathode, an electrolyte solution is injected between the anode and the cathode, and the anode is the photoanode of the dye solar cell prepared in Example 2.

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Abstract

The invention provides a method for preparing porous spherical titanium dioxide and a method for preparing a dye solar cell light positive pole from porous spherical titanium dioxide prepared by the method, and a dye-sensitized solar cell prepared from the dye solar cell light positive pole. The prepared porous spherical titanium dioxide can be used as a dye absorption carrier in the electrode ofa dye-sensitized semiconductor, is large titanium dioxide particles with porous structures, and has the characteristics of P25 and submicron titanium dioxide. In the method, the porous spherical titanium dioxide is prepared by taking cetylamine as a structural guiding agent, and ammonia water as a surface aperture regulator; and the raw materials are easily obtained, the method is easy to operate, the energy consumption is low and the repeatability is high. Compared with a battery prepared from the conventional P25 titanium dioxide, the prepared porous spherical titanium dioxide has a large specific surface area and high photochemical stability, improves the dye absorption efficiency and electron transport efficiency by over 50 percent, and is suitable for the research of high-efficiency dye batteries.

Description

technical field [0001] The invention relates to the technical field of dye-sensitized solar cells, in particular to a method for preparing porous spherical titanium dioxide and a photoanode of a dye solar cell. Background technique [0002] Solar energy conversion is the most active field of new energy development and utilization. Solar cells currently on the market are mainly monocrystalline silicon and polycrystalline silicon. However, the manufacturing cost of these two solar cells is too high, which is not conducive to widespread application. The dye-sensitized solar cell (DSC), which appeared in the 1990s, is a solar cell developed based on the principle of plant chlorophyll photosynthesis. It has attracted widespread attention because of its potential high efficiency and low cost. A DSC is a type of solar cell using a wide bandgap semiconductor material. The wide bandgap semiconductor itself has high thermodynamic stability and photochemical stability, but the abili...

Claims

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Application Information

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IPC IPC(8): C01G23/053B82Y40/00H01G9/042H01G9/20H01M14/00H01L51/44
CPCY02E10/50Y02E10/542Y02E10/549
Inventor 杨明生赵伟明谭国良周志钊黄希明孙满龙王勇
Owner DONGGUAN ANWELL DIGITAL MASCH CO LTD
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