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Method for preparing SiO2-modified ZnO nano-porous thin film composite electrode

A composite electrode and nanoporous technology, applied in the field of nanomaterials, can solve the problems of continuous improvement of the conversion efficiency of dye-sensitized solar cells and other problems, and achieve the effects of improved sensitization performance, simple process, and improved acid corrosion resistance.

Inactive Publication Date: 2011-04-06
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the continuous improvement of the conversion efficiency of dye-sensitized solar cells based on ZnO nanoparticle porous thin film electrodes has been limited.

Method used

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  • Method for preparing SiO2-modified ZnO nano-porous thin film composite electrode
  • Method for preparing SiO2-modified ZnO nano-porous thin film composite electrode
  • Method for preparing SiO2-modified ZnO nano-porous thin film composite electrode

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] 1. Fully grind the ZnO powder for 45 minutes, then heat-treat at 500 degrees Celsius for 45 minutes, and finally cool naturally to room temperature.

[0023] 2. The above treated ZnO powder (4g), terpineol (18mL), ethyl cellulose (2.0g) and alcohol (50mL) were mixed to prepare a slurry. Ultrasonic vibration and stirring were performed for 30 minutes. Then put it on the heating furnace to heat, and keep stirring for 20 to 30 minutes until a viscous slurry is formed.

[0024] 3. Evenly coat the ZnO nano-slurry on the FTO conductive glass, dry it and sinter it in a box furnace at 450°C for 1 hour, take it out after natural cooling, and you can get a ZnO nano-particle porous film electrode with a thickness of about 10 microns .

[0025] 4. Take a silica sol with a concentration of about 11-13 wt%, and ultrasonically treat it for 15 minutes to obtain a colloidal solution with an appropriate viscosity. Use a dropper to absorb the above-mentioned alumina sol and drop it on ...

example 2

[0028] 1. Fully grind the ZnO powder for 50 minutes, then heat-treat at 450 degrees Celsius for 30 minutes, and finally cool naturally to room temperature.

[0029] 2. The above-mentioned treated ZnO powder (2g), terpineol (9mL), ethyl cellulose (1.0g) and alcohol (50mL) were mixed to prepare a slurry. Ultrasonic vibration and stirring were performed for 30 minutes. Then put it on the heating furnace to heat, and keep stirring for 20 to 30 minutes until a viscous slurry is formed.

[0030] 3. Coat the ZnO nano-slurry uniformly on the aluminum sheet, dry it and sinter it in a box furnace at 450°C for 1 hour, take it out after natural cooling, and you can get a ZnO nano-particle porous film electrode with a thickness of about 10 microns.

[0031]4. Take a silica sol with a concentration of about 11-13 wt%, and ultrasonically treat it for 15 minutes to obtain a colloidal solution with an appropriate viscosity. Use a dropper to absorb the above-mentioned alumina sol and drop it ...

example 3

[0034] 1. Fully grind the ZnO powder for 40 minutes, then heat-treat at 450 degrees Celsius for 30 minutes, and finally cool naturally to room temperature.

[0035] 2. The above-mentioned treated ZnO powder (2g), terpineol (9mL), ethyl cellulose (1.5g) and alcohol (100mL) were mixed to prepare a slurry. Ultrasonic vibration and stirring were performed for 30 minutes. Then put it on the heating furnace to heat, and keep stirring for 20 to 30 minutes until a viscous slurry is formed.

[0036] 3. Coat the ZnO nano-slurry evenly on the stainless steel sheet, sinter in a box furnace at 450°C for 1 hour after drying, and take it out after natural cooling. Repeat coating twice to obtain a ZnO nanoparticle porous film electrode with a thickness of about 30 microns.

[0037] 4. Take a silica sol with a concentration of about 11-13 wt%, and ultrasonically treat it for 15 minutes to obtain a colloidal solution with an appropriate viscosity. Use a dropper to absorb the above-mentioned ...

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Abstract

The invention belongs to the technical field of nano-materials, and relates to a method for preparing a SiO2-modified ZnO nano-porous thin film composite electrode, which is characterized in that a ZnO nano-particle porous thin film is used as the base layer of the composite electrode; a spin-coated silicon oxide sol protective layer is selected to improve the corrosion resistance of the ZnO nano-particle porous thin film in an acid dye for the stability of a dye-sensitized solar cell. The coating layer number, the sintering time and the concentration of sole are adjusted so as to reasonably control the thickness of a silicon oxide thin film coat, thereby obtaining the composite electrode with strong corrosion resistance and excellent performance. In the invention, process parameters can be adjusted according to different sensitized conditions so as to obtain the SiO2-ZnO nanoparticle porous thin film composite electrode with strong acid resistance in the process of sensitization and optimal electrode performance. The production process has the advantages of high efficiency, low cost and the like, and is suitable for future large-scale production.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular provides a method for using a silicon oxide modification layer to prevent zinc oxide nanoparticle porous film electrodes from being corroded and damaged during dye sensitization, and relates to a composite dye-sensitized solar cell Preparation method of electric anode. Background technique [0002] The development of cheap, clean, environmentally friendly and renewable new energy has become a hot spot in the current research field. Solar energy is the most abundant renewable energy resource. As a sustainable and clean energy source, it has great potential for development and application. At present, silicon solar cells have been widely used in aerospace, communication, transportation and other fields. Although the conversion efficiency of this type of battery is high, its manufacturing process is complicated, the material requirements are harsh and the price is expensive...

Claims

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Application Information

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IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/48
CPCY02E10/542Y02E10/50Y02E10/549
Inventor 张跃秦子黄运华廖庆亮
Owner UNIV OF SCI & TECH BEIJING
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