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Optical anode slurry for dye-sensitized solar cell and preparation method thereof as well as optical anode for dye-sensitized solar cell and dye-sensitized solar cell

A solar cell and dye sensitization technology, which is applied in the field of solar cell manufacturing, can solve the problems of increasing photoelectric conversion rate, low dye adsorption rate, hindering electron transmission, etc., and achieve high photoelectric conversion rate, high photoelectric conversion rate, and uniform distribution of voids Effect

Active Publication Date: 2013-07-17
CHERY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In dye-sensitized solar cells, if the particle size of titanium dioxide is too large, the adsorption rate of the dye is low, which is not conducive to photoelectric conversion. If the particle size is too small, there are too many interfaces. If it is too small, the cost of raw materials is high, so it is necessary to find a suitable particle size to reduce the cost and increase the photoelectric conversion rate

Method used

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  • Optical anode slurry for dye-sensitized solar cell and preparation method thereof as well as optical anode for dye-sensitized solar cell and dye-sensitized solar cell
  • Optical anode slurry for dye-sensitized solar cell and preparation method thereof as well as optical anode for dye-sensitized solar cell and dye-sensitized solar cell
  • Optical anode slurry for dye-sensitized solar cell and preparation method thereof as well as optical anode for dye-sensitized solar cell and dye-sensitized solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Weigh 34g of tetrabutyl titanate, add 6g of acetic acid into it, stir well to mix tetrabutyl titanate and acetic acid evenly, then add 170ml of water to it, hydrolyze for 1.5h at room temperature, tetrabutyl titanate is particularly easy Hydrolysis occurs, agglomeration occurs, and large particles of titanium dioxide are generated. Acetic acid can inhibit the hydrolysis of tetrabutyl titanate, slow down the hydrolysis reaction speed of tetrabutyl titanate, and generate uniformly dispersed hydrolyzate of small particles. Add 5ml of nitric acid to the hydrolyzate, nitric acid can make the particles smaller and more evenly dispersed. The hydrolyzate was put into a water bath at 80° C. and reacted for 2 hours to form a sol. Transfer the generated sol to a high-pressure reactor and react at 230°C for 24 hours. The product obtained by the hydrothermal reaction is washed centrifugally with water and dried at 70°C to obtain the desired powder. The particle size of the self-made...

Embodiment 2

[0051] Weigh 28.8g of isopropyl titanate, add 5.16g of polyacrylic acid into it, stir well to mix the isopropyl titanate and polyacrylic acid evenly, then add 260ml of water into it, and hydrolyze for 4h at room temperature. Add 5ml of nitric acid to the hydrolyzate, nitric acid can make the particles smaller and more evenly dispersed. The hydrolyzate was put into a water bath at 100° C. and reacted for 5 hours to form a sol. Transfer the generated sol to a high-pressure reactor and react at 210°C for 36 hours. The product obtained by the hydrothermal reaction is washed centrifugally with water and dried at 70°C to obtain the desired powder. The particle size of the self-made titanium dioxide powder is 8~ 16nm, the specific surface area is 90m 2 / g.

[0052] Weigh 14g of P25 titanium dioxide powder nanocrystals and 6g of the small particle titanium dioxide powder nanocrystals self-made in the above reaction steps, grind and mix them evenly, and add 50ml of ethanol to the mix...

Embodiment 3

[0055] Weigh 29.4g of titanium ammonium lactate, add 90ml of water to it, and hydrolyze for 1 hour at room temperature. The hydrolyzate was put into a water bath at 90° C. and reacted for 1.5 h to form a sol. Transfer the generated sol to a high-pressure reactor, react at 220°C for 22 hours, wash the product obtained by the hydrothermal reaction with ethanol, and dry it at 70°C to obtain the desired powder. The particle size of the self-made titanium dioxide powder is 8~ 16nm, the specific surface area is 95m 2 / g.

[0056] Weigh 5.32g of P25 titanium dioxide powder nanocrystals and 7.98g of small particles of titanium dioxide powder nanocrystals made in the above reaction steps, grind and mix them evenly, and add 20ml of ethanol to the mixture as a dispersant. Weigh 4g of 200Pa.s ethyl cellulose as binder, weigh 36g of terpineol, mix the weighed ethyl cellulose with terpineol, dissolve ethyl cellulose into terpineol , stirred to form a certain viscosity organic vehicle. T...

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Abstract

The invention discloses optical anode slurry for a dye-sensitized solar cell and a preparation method thereof as well as an optical anode of the dye-sensitized solar cell prepared by utilizing the slurry and the dye-sensitized solar cell, wherein titanium dioxide in the slurry for the dye-sensitized solar cell is the mixture of two kinds of nanoscale titanium dioxides with different particle sizes, the mixture is formed by mixing prepared nano titanium dioxide powder with the particle size of 8-16nm and the specific surface area of 90-100m<2> / g, and P25 titanium dioxide powder proportionally,the optical anode prepared from the slurry fully makes use of the respective advantages of the large particles and the small particles, which ensures that the optical anode has higher optical captureefficiency, but also the photosensitized dye absorption amount is improved, the generation rate and conveying capability of photon-generated carriers are intensified, and the recombination process ofthe photon-generated carriers is reduced, thus the photoelectric conversion efficiency of the dye-sensitized solar cell is improved. The optical anode slurry, the preparation method thereof as well as the optical anode and the dye-sensitized solar cell provided by the invention are suitable for the high-efficiency preparation of the dye-sensitized solar cell.

Description

technical field [0001] The invention belongs to the technical field of solar cell manufacturing, and in particular relates to a dye-sensitized solar cell photoanode slurry and a preparation method thereof, a dye-sensitized solar cell photoanode and a dye-sensitized solar cell. Background technique [0002] In the world's energy structure, primary petrochemical energy such as oil, natural gas, and coal occupies a dominant position. With the sharp reduction of petrochemical energy and the increasingly serious environmental pollution, it is imminent to develop clean and renewable energy. In the foreseeable future of human beings, solar energy, as an inexhaustible clean energy source for human beings, does not produce any environmental pollution and is almost not restricted by any geographical environment. Since the 1990s, a research group headed by M.Gratzel of the Lausanne Institute of Technology in Switzerland has developed dye-sensitized solar cells. In the solar cell marke...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/042H01G9/20H01M14/00H01L51/44H01L51/48
CPCY02E10/542Y02E10/549Y02P70/50
Inventor 王秀田曾绍忠方舟卢磊
Owner CHERY AUTOMOBILE CO LTD
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