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Carbon aerogel composite pair electrode used for dye-sensitized solar cell and preparation method thereof

A technology of solar cells and carbon aerogels, applied in capacitor electrodes, electrical components, photosensitive equipment, etc., can solve the problems of restricting large-scale applications, high cost, unfavorable flexible counter electrodes, etc., and achieve low cost, high conductivity, Solve the effect of high cost

Inactive Publication Date: 2009-10-21
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the platinum counter electrode has superior performance, its high cost limits its large-scale application. At the same time, this type of counter electrode usually uses FTO conductive glass as the substrate, which is not conducive to the preparation of flexible counter electrodes.

Method used

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  • Carbon aerogel composite pair electrode used for dye-sensitized solar cell and preparation method thereof
  • Carbon aerogel composite pair electrode used for dye-sensitized solar cell and preparation method thereof
  • Carbon aerogel composite pair electrode used for dye-sensitized solar cell and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Example 1: Cut the ITO glass into pieces with a size of 1cm×1.5cm, then use detergent, distilled water, absolute ethanol, and isopropanol to ultrasonically clean it for 15 minutes, and then perform oxygen plasma treatment on it for 5 minutes. , the power is 20 ~ 50W, the main function of the treatment is to reduce the average roughness and peak-valley roughness of the conductive glass surface film, so as to improve its flatness; and to increase the surface energy of the conductive glass and reduce its contact angle , so that the wettability and adsorption performance of the conductive film surface of the conductive glass can be improved. The carbon airgel and polydioxyethylthiophene / polystyrene sulfonic acid aqueous solution (PEDOT:PSS, Bayer, Baytron 4083) were formulated into suspensions with different concentrations (mass percentage concentration between 5% and 40%) ), the prepared suspension is spin-coated on the conductive glass at a rotation speed of 500-3000 rpm ...

Embodiment 2

[0019] Embodiment 2: stainless steel sheet (or nickel sheet) is cut into the sheet of 1cm * 1.5cm size, cleans up with dehydrated alcohol, stand-by; Aqueous acid solution (PEDOT:PSS) is prepared into suspensions of different concentrations (concentrations are between 5% and 40%), and the prepared suspension is spin-coated on the conductive surface at a rotation speed of 500-3000 rpm on a homogenizer. On the glass surface, the spin-coating time was 30s, and after spin-coating, it was baked in an oven at 150° C. for 30 minutes, and a counter electrode with catalytic activity was obtained after drying.

Embodiment 3

[0020] Embodiment 3: stainless steel sheet (or nickel sheet) is cut into the sheet of 1cm * 1.5cm size, cleans up with dehydrated alcohol, stand-by; With mass ratio be the ratio of 9: 1 with polytetrafluoroethylene Mix the aqueous suspension of ethylene (60% by mass fraction), add 5% absolute ethanol, ultrasonicate for 15 minutes, let it mix well, and then apply it evenly on the above-mentioned treated stainless steel sheet with a glass rod. Dry it in a vacuum drying oven at about 45°C for 24-48 hours to make it dry enough. After drying, use a tablet press to press the stainless steel sheet with a pressure of 20MPa to make the material more evenly attached to the sheet and obtain a flexible carbon with catalytic activity. Airgel composite counter electrode.

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Abstract

The invention discloses a carbon aerogel composite pair electrode used for a dye-sensitized solar cell and a preparation method thereof. The carbon aerogel composite pair electrode is formed by coating carbon aerogel compound formed by mixing carbon aerogel (1) and polymer (2) on a conductive substrate (3). The preparation method of the carbon aerogel composite pair electrode comprises the steps: (1) the carbon aerogel is mixed with poly-dioxy ethyl thiophene / poly-p-styrenesulfonic acid water solution to obtain suspending liquid with the concentration of 5-40%, or the carbon aerogel is added into the suspending liquid of polyfluortetraethylene, polyvinylidene fluoride or polyvinylidene fluoride-hexafluoropropylene according to the mass ratio of 5:1-15:1 for ultrasonic dispersion for 10-20min, so that evenly mixed carbon aerogel / polymer compound can be obtained for standby application; (2) the conductive substrate is cleaned, and the carbon aerogel / polymer compound is coated on the cleaned conductive substrate and dried, finally, the carbon aerogel composite pair electrode used for the dye-sensitized solar cell can be prepared. The electrode has the characteristics of low cost, high electrical conductivity and catalytic activity as well as being capable of preparing flexible cells and the like, so as to promote the practicability of the dye-sensitized nano-crystalline solar cell.

Description

technical field [0001] The invention relates to a composite counter electrode of a dye-sensitized solar cell and a preparation method thereof. Background technique [0002] Since 1991 by the Swiss The dye-sensitized titanium dioxide nano-thin film solar cells (DSSCs) proposed by the professor have attracted the attention of scientific research and industry departments due to their advantages of relatively cheap, easy to prepare flexible cells, and performance as high as 11%. In order to reflect these advantages of dye-sensitized nanocrystalline solar cells, the counter electrode must meet the following three requirements: first, the material is cheap and easy to obtain, second, the catalytic reduction efficiency is high, and third, the counter electrode has certain flexibility. However, current high-performance DSSCs cells mainly use platinum-coated FTO glass as the counter electrode. Although the platinum counter electrode has superior performance, its high cost limits i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/44H01L51/46C08L65/00C08L27/18C08L27/16C08L27/20C08K3/04H01L51/48
CPCY02E10/542Y02E10/549
Inventor 赵斌黄辉谭松庭
Owner XIANGTAN UNIV
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