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Preparing method of counter electrode for dye-sensitized solar cell

A solar cell and dye sensitization technology, which is applied in the field of dye sensitized solar cell materials, can solve the problems of easy reduction in activity and easy poisoning, and achieve the effects of reducing catalyst poisoning, easy implementation, and improving electrocatalytic activity

Active Publication Date: 2015-04-01
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to overcome the defects that the dot catalytic material on the counter electrode of the existing dye-sensitized solar cell is easily poisoned and the activity is easily reduced. The invention provides a preparation method of the counter electrode for the dye-sensitized solar cell

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preparation example Construction

[0032] In order to solve the problem of catalyst poisoning in the counter electrode in the above production process, the present invention provides a method for preparing a counter electrode for a dye-sensitized solar cell, which can remove pollutants remaining in the pore structure of the counter electrode or adsorbed on the surface of the catalyst, Avoiding or alleviating catalyst poisoning in CE, and then preparing dye-sensitized solar cells with high photoelectric conversion performance, the technical solution of the invention is easy to implement, and provides a new idea for the preparation of counter electrodes for dye-sensitized solar cells.

[0033] The invention provides a method for preparing a counter electrode for a dye-sensitized solar cell (DSSC). The experimental steps of the preparation method of the counter electrode include ① preparing an electrocatalytic active material film on the counter electrode substrate, and ② performing activation treatment on the coun...

Embodiment 1

[0062] (1) Preparation of the slurry of the electrocatalytic material:

[0063] Mix 20g of carbon fiber, 5g of carbon nanohorn powder, 5g of vanadium nitride powder and 5g of vanadium sulfide powder, then add 15g of titanium dioxide powder with a particle size of 30nm, and 20g of ethyl cellulose, mix properly, and then add 100g of N-methyl- -Pyrrolidone (NMP), centrifugally mixed for 30min, then ball milled for 12h to prepare the slurry of the electrocatalytic material;

[0064] (2) Preparation of conductive substrate (ITO):

[0065] Clean the ITO board with deionized water and acetone ultrasonically for 25 minutes respectively, dry the ITO board after ultrasonic cleaning, and set aside;

[0066] (3) Slurry coating of electrocatalytic materials:

[0067] Coat low-cost electrocatalytic material slurry on the cleaned ITO substrate by screen printing method, dry at 100°C for 5 minutes, and then treat at 150°C for 15 minutes under the protection of inert gas;

[0068] (4) UV-oz...

Embodiment 2

[0071] (1) Preparation of the slurry of the electrocatalytic material:

[0072] Mix 20g carbon fiber, 5g pigment carbon black powder, 5g tantalum carbide powder and 5g tungsten phosphide powder, then add 15g titanium dioxide powder with a particle size of 200nm, and 30g ethyl cellulose, after proper mixing, add 300g terpineol, high Shearing and mixing for 30 minutes, and ball milling and mixing for 5 hours to prepare the slurry of the electrocatalytic material;

[0073] (2) Preparation of conductive substrate (Ti plate):

[0074] Clean the Ti plate with deionized water and acetone ultrasonically for 25 minutes respectively, dry the Ti plate after ultrasonic cleaning, and set aside;

[0075] (3) Slurry coating of electrocatalytic materials:

[0076] Coat low-cost electrocatalytic material slurry on the cleaned Ti substrate by spin coating method, dry at 100°C for 5 minutes, and then treat at 450°C for 30 minutes;

[0077] (4) UV activation treatment of the electrode:

[007...

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Abstract

The invention provides a preparing method of a counter electrode for a dye-sensitized solar cell. Activating treatment is carried out on an electrocatalytic activity material film on a conductive substrate, and activating treatment comprises at least one of plasma treatment, ultraviolet light treatment and ozone treatment. The preparing method of the counter electrode for the dye-sensitized solar cell (DSSC), provided by the invention, can remove pollutants left on the porous structure of the counter electrode or pollutants absorbed to the surface of a catalyst, avoid or alleviate the poisoning condition of the catalyst in the CE (Counter Electrode) and improve the electrocatalytic activity of the counter electrode.

Description

technical field [0001] The invention relates to the field of dye-sensitized solar cell materials, in particular to a method for preparing a counter electrode for a dye-sensitized solar cell. Background technique [0002] Dye solar cells (DSSCs) are promising photovoltaic devices mainly due to their low cost and high efficiency. Generally, DSSCs have three main components: photoanode, redox electrolyte and counter electrode (CE). Among them, the counter electrode (CE) plays an important role in the process of improving the performance of DSSCs. CE can catalyze the reduction of the electrolyte and indirectly regenerate the photosensitizer by obtaining electrons. Platinum (Pt) is a traditional material for CE, which has high electrical conductivity and excellent electrocatalytic reduction activity for oxidized electrolytes. However, the high cost and low abundance of Pt are difficult to meet the needs of large-scale commercial applications in DSSCs. In recent years, many rese...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542
Inventor 李嘉庆杨松旺李勇明刘岩
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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