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Preparation method for SiO2-ZnO nano-bar array composite electrode

A nanorod array and composite electrode technology, applied in the field of nanomaterials, can solve the problems of dye-sensitized solar cell conversion efficiency limitation and various improvement effects, and achieve the effects of strong acid resistance, stable sensitization performance, and inhibition of corrosion damage

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 nanorod arrays has been limited.
At present, some researchers try to prevent acid dyes from reducing the performance of batteries based on ZnO nanomaterials by means of surface modification, but the improvement effects of these methods vary.

Method used

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  • Preparation method for SiO2-ZnO nano-bar array composite electrode
  • Preparation method for SiO2-ZnO nano-bar array composite electrode
  • Preparation method for SiO2-ZnO nano-bar array composite electrode

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] 1. Dissolve chemically pure zinc nitrate and hexamethylenetetramine in equimolar amounts into deionized water to prepare a reaction solution with a molar concentration of 0.05 mol / L.

[0024] 2. Select 5 pieces of FTO conductive glass coated with 100nm thick ZnO film as the seed layer prepared by homogenization method and cut into 2cm×2cm size as the growth substrate, put them into the reaction solution and grow in a sealed manner at 95°C for 24 hours.

[0025] 3. After the reaction, the substrate was rinsed repeatedly with deionized water. After drying, a uniform translucent white film was formed on the substrate, which was the prepared ZnO nanorod array.

[0026] 4. Take a silica sol with a concentration of about 11-13 wt%, and after ultrasonic treatment for 15 minutes, obtain a colloidal solution with an appropriate viscosity. Use a dropper to draw the above-mentioned alumina sol and drop it on the surface of five ZnO nanorod array electrodes respectively. Then spin...

example 2

[0029] 1. Dissolve chemically pure zinc nitrate and hexamethylenetetramine in equimolar amounts into deionized water to prepare a reaction solution with a molar concentration of 0.15 mol / L.

[0030] 2. Select 5 pieces of aluminum plated with 100nm thick ZnO thin film as the seed layer prepared by homogenization method and cut into 2cm×2cm size as the growth substrate, put them into the reaction solution and grow in sealed at 90°C for 24 hours.

[0031] 3. After the reaction is finished, a uniform milky white film is obtained, which is the prepared ZnO nanorod array.

[0032] 4. Take a silica sol with a concentration of about 20-26 wt%, and after ultrasonic treatment for 15 minutes, obtain a colloidal solution with an appropriate viscosity. Use a dropper to draw the above-mentioned alumina sol and drop it on the surface of five ZnO nanorod array electrodes respectively. Then spin for 5 seconds in low gear at 1000 rpm and 15 seconds in high gear at 3000 rpm. A colloidal layer ...

example 3

[0035] 1. Dissolve chemically pure zinc nitrate and hexamethylenetetramine in equimolar amounts into deionized water to prepare a reaction solution with a molar concentration of 0.05 mol / L.

[0036] 2. Select a stainless steel substrate plated with a 100nm thick ZnO film as a seed layer and cut it into 2cm×2cm size as a growth substrate, put it into the reaction solution and grow it at 90°C for 12 hours in a sealed manner.

[0037] 3. After the reaction is finished, a uniform translucent milky white film is obtained, which is the prepared ZnO nanorod array.

[0038] 4. Take a silica sol with a concentration of about 20-26 wt%, and after ultrasonic treatment for 15 minutes, obtain a colloidal solution with an appropriate viscosity. Use a dropper to draw the above-mentioned alumina sol and drop it on the surface of five ZnO nanorod array electrodes respectively. Then spin for 5 seconds in low gear at 1000 rpm and 15 seconds in high gear at 3000 rpm. A colloidal layer with a unif...

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Abstract

The invention belongs to the technical field for nanometre materials and relates to a preparation method of a SiO2-ZnO nano-bar array composite electrode. The preparation method is characterized in that: a ZnO nano-bar array prepared by a hydro-thermal method is used as a composite electrode base layer, a rotationally coated silicon oxide gel process is selected as the method for preparing the SiO2-ZnO nano-bar array composite electrode, and the thickness of a SiO2 thin film coating can be reasonably controlled by adjusting the concentration of gel, the number of coatings and the frequency ofsintering, so that adjustment and control on the performance of the composite electrode can be realized. By a method for enhancing the anti-erosion performance of a zinc oxide nano-bar array electrode by coating a silicon oxide protection layer, the SiO2-ZnO nano-bar array composite electrode applicable for an acidic dye-based dye sensitized solar battery is prepared, and has advantages of stableperformance, strong acid resistance, simplicity of preparation method, low cost, high efficiency, wide adjustable area and suitability for industrial production.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular provides a method for preventing zinc oxide electrodes from being corroded and damaged during dye sensitization by using a silicon oxide modification layer, and relates to a highly stable dye-sensitized solar cell electrode method of preparation. Background technique [0002] Solar cells can be classified into silicon-based solar cells, multi-component compound material solar cells, functional polymer material solar cells, dye-sensitized solar cells, and the like. Dye-sensitized solar cells have become a hot field of research in recent years due to their high conversion efficiency, low cost, and simple fabrication process. Nanoscale TiO 2 , ZnO, SnO 2 Such semiconductor oxides have suitable band gap, large ratio, surface area, light corrosion stability, and good electron transport, and are used as photoanode materials for solar dye-sensitized cells. Especially in recen...

Claims

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Application Information

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IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/48
CPCY02E10/50Y02E10/542Y02E10/549Y02P70/50
Inventor 张跃秦子黄运华廖庆亮张铮
Owner UNIV OF SCI & TECH BEIJING
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