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Method for preparing composite electrode of flexible dye-sensitized solar cell

A technology of solar cells and dye sensitization, applied in the field of solar cells, can solve the problems of increasing battery cost, high price, solvent volatilization, etc., and achieve the effects of easy film formation, low cost, and improved stability

Inactive Publication Date: 2010-06-09
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the electrolyte of dye-sensitized solar cells mainly uses I - / I 3 - The organic solution of the redox couple, this kind of liquid electrolyte has the problem of solvent volatilization and leakage, making the sealing of the electrolyte one of the difficulties faced by the dye-sensitized solar cell [1]
In addition, the counter electrode of the dye-sensitized solar cell mainly adopts platinum-plated counter electrode. Platinum is a rare metal, and its expensive price increases the cost of the battery. The search for a counter electrode with low cost and high catalytic performance is a dye-sensitized counter electrode. A Direction of Research on Sensitized Solar Cells

Method used

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  • Method for preparing composite electrode of flexible dye-sensitized solar cell
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  • Method for preparing composite electrode of flexible dye-sensitized solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Weigh PEDOT:PSS solution (US Sigma-Aldrich company, concentration 1.3% aqueous solution), polar solvent dimethyl sulfoxide, mix for 8 hours, add appropriate amount of carbon black powder, put into agate mortar and grind for 30 minutes, continue to stir 1-4h, raw material ratio weight according to Table 1. After making it fully mixed and volatilized, a slurry (colloidal) with a certain viscosity is obtained. Make it easy to form a film on the substrate. The final stirring time of the slurry is affected by the ambient temperature and stirring speed. Apply the prepared slurry on the conductive substrate by roller coating, and then dry it at room temperature under dust-free conditions. After the surface of the film is completely dry, put it in an oven at 80°C to dry to obtain the conductive polymer layer-PEDOT : PSS thin film counter electrode.

[0050] Table 1

[0051]

Embodiment 2

[0053] The experimental method is the same as in Example 1, and the proportioning weight of the raw materials is taken by weighing in Table 2. Preparation of conductive polymer layer-PEDOT:PSS thin film counter electrode.

[0054] Table 2

[0055]

Embodiment 3

[0057] As in Example 2, a conductive polymer layer-PEDOT:PSS film counter electrode was prepared. The composite electrode of the present invention can be obtained by coating a layer of quasi-solid electrolyte prepared by uniformly mixing the raw materials listed in Table 3 on the conductive polymer layer.

[0058] table 3

[0059]

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Abstract

The invention discloses a composite electrode of a flexible dye-sensitized solar cell and a preparation method thereof. The composite electrode consists of a conducting polymer layer (3) on a conductive substrate and a quasi-solid electrolyte layer (4), wherein the conductive substrate is an ITO or FTO flexible plastic sheet, or ITO or FTO glass; the conducting polymer layer (3) is prepared from a conducting polymer, an organic solvent and carbon black, and the ratio of the conducting polymer to the organic solvent to the carbon black is 4.5 to 1 to 0.1; and the quasi-solid electrolyte layer (4) consists of the conducting polymer, the organic solvent, inorganic nano-powder and an ionic liquid, and the ratio of the conducting polymer to the organic solvent to the inorganic nano-powder to the ionic liquid is 4.5 to 1 to 0.24 to 0.04. The preparation method thereof comprises the steps of: preparing the conducting polymer layer on the conductive substrate, and performing heat treatment at the temperature of 80 DEG C; and finally, coating a layer of quasi-solid electrolyte on the conducting polymer layer to obtain the composite electode. The conducting polymer is 1.3 percent aqueous solution of PEDOT: PSS. The composite electrode has the advantages of simple preparation method and low cost, and is suitable for the application of the flexible dye-sensitized solar cells.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and relates to a method for preparing a composite electrode of a dye-sensitized solar cell. Background technique [0002] As a new type of chemical solar cell, dye-sensitized solar cell mainly consists of three parts, namely working electrode (dye-sensitized nanocrystalline film), electrolyte and counter electrode. [1-3] . At present, the electrolyte of dye-sensitized solar cells mainly uses I - / I 3 - The organic solution of the redox couple, this kind of liquid electrolyte has the problem of solvent volatilization and leakage, making the sealing of the electrolyte one of the difficulties faced by the dye-sensitized solar cell [1] . In addition, the counter electrode of dye-sensitized solar cells mainly uses platinum-plated counter electrode. Platinum is a rare metal, and its expensive price increases the cost of the battery. It is necessary to find a counter electrode with low cost and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/44H01L51/48
CPCY02E10/542H01G9/2059H01L51/0037H01G9/2031H01L51/442Y02E10/549H10K85/1135H10K30/82
Inventor 胡志强巩翠翠许芳怡周红茹
Owner DALIAN POLYTECHNIC UNIVERSITY
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