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Preparation method for scattering layer of dye-sensitized solar battery

A technology of solar cells and dye sensitization, which is applied in the field of preparation of photoanodes of dye-sensitized solar cells, can solve the problems of ineffective adsorption of dye molecules and low specific surface area, and achieve improved photoelectric conversion efficiency, high refractive index, and improved photoelectricity. The effect of absorbency

Inactive Publication Date: 2012-06-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used titanium oxide particles with large particles and low specific surface area cannot effectively adsorb dye molecules.

Method used

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  • Preparation method for scattering layer of dye-sensitized solar battery
  • Preparation method for scattering layer of dye-sensitized solar battery
  • Preparation method for scattering layer of dye-sensitized solar battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 62 grams of sodium chloride to make 340 milliliters of solution, transfer the solution to an ice-water bath environment, add 10 milliliters of titanium tetrachloride dropwise, stir while adding, and obtain a colorless and uniform mixture after the addition is completed. solution. Transfer the mixed solution to a polytetrafluoroethylene-lined reactor for hydrothermal reaction, control the reaction temperature at 120°C, and hold for 12 hours. After the heat preservation is completed and cooled to room temperature, open the hydrothermal reactor and take out the Gallbladder, pour out the precipitate, wash 3 times to remove chloride ions and sodium ions, dry the pure precipitate to obtain large particle titanium oxide scattering microsphere powder. Get a small amount of powder and carry out X-ray diffraction (XRD) analysis, XRD result shows that titanium dioxide wherein is rutile phase, as figure 1 shown. figure 2 It is the field emission scanning electron microsco...

Embodiment 2

[0034]Weigh 41 grams of sodium chloride to make 340 ml of solution, transfer the solution to an ice-water bath environment, add 10 ml of titanium tetrachloride dropwise, stir while adding, and obtain a colorless and uniform mixture after the addition is completed. solution. Transfer the mixed solution to a polytetrafluoroethylene-lined reactor for hydrothermal reaction, control the reaction temperature at 120°C, and hold for 18 hours. After the heat preservation is completed and cooled to room temperature, open the hydrothermal reactor and take out the Gallbladder, pour out the precipitate, wash 3 times to remove chloride ions and sodium ions, dry the pure precipitate to obtain large particle titanium oxide scattering microsphere powder. Weigh 2 grams of large-particle scattering microspheres and transfer them to a mortar, add 8 grams of ethylcellulose terpineol solution with a mass fraction of 10% prepared in advance, and grind the mixture of the three for 2 hours to obtain a...

Embodiment 3

[0036] Weigh 41 grams of potassium chloride to make 340 milliliters of solution, transfer the solution to an ice-water bath environment, add 10 milliliters of titanium tetrachloride dropwise, stir while adding, and obtain a colorless and uniform mixture after the addition is completed. solution. Transfer the mixed solution to a polytetrafluoroethylene-lined reactor for hydrothermal reaction, control the reaction temperature to 150°C, and hold the heat for 12 hours. Gallbladder, pour out the precipitate, wash 3 times to remove chloride ions and potassium ions, dry the pure precipitate to obtain large particle titanium oxide scattering microsphere powder. Weigh 2 grams of large-particle scattering microspheres and transfer them to a mortar, add 8 grams of polyethylene glycol 20,000 aqueous solution with a mass fraction of 10% prepared in advance, and grind the mixture of the three for 1 hour to obtain a uniform slurry. Using the method of scraping coating, a layer of slurry is ...

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Abstract

The invention relates to a preparation method for a scattering layer of a dye-sensitized solar battery. The preparation method comprises the following steps of: (1) mixing titanium tetrachloride and a salt solution, and then conducting the hydro-thermal reaction on the titanium tetrachloride and the salt solution in a reaction kettle, thus obtaining titanium oxide scattering microspheres; (2) transferring the titanium oxide microspheres into a mortar, adding a pore-forming agent and a solvent in the mortar in sequence, and grinding the mixture for 0.5-3h to obtain uniform slurry; and (3) coating a layer of scattering layer slurry on a small particle base layer of the dye-sensitized solar battery by adopting a screen printing method or a blade coating method, sintering at the temperature of 400 DEG C-500 DEG C, and finally obtaining the scattering layer of the dye-sensitized solar battery. According to the method, the provided process is simple and convenient, the used raw materials are wide in source, a surface active agent does not need to be used, and the cost is low; and due to the provided large-particle scattering layer, the light absorbing capability of the photoanode of the battery is improved, simultaneously, the dye absorbing amount is increased, and the scattering layer has an industrial application prospect.

Description

technical field [0001] The invention belongs to the field of preparation of photoanodes of dye-sensitized solar cells, in particular to a method for preparing a scattering layer of dye-sensitized solar cells. Background technique [0002] In 1991, the Swiss Federal Institute of Technology (EPFL) prepared a new type of solar cell similar to the principle of plant photosynthesis, called dye-sensitized nanocrystalline solar cells (Dye-Sensitized Solar Cells, DSSCs). Due to its low cost, wide range of raw material sources, simple preparation process, and high photoelectric conversion efficiency, researchers have paid extensive attention to low-cost solar cells. [0003] Different from silicon solar cells, dye-sensitized solar cells are a kind of photochemical cells, which are mainly composed of nanocrystalline porous films, dyes, electrolytes and counter electrodes. It becomes the core component of dye-sensitized solar cells from the role of transporting photogenerated electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/48
CPCY02E10/542Y02E10/549
Inventor 张青红芮一川王宏志李耀刚
Owner DONGHUA UNIV
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