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Preparation method of dye-sensitized solar cell photoanode, dye-sensitized solar cell photoanode and dye-sensitized solar cell

A solar cell and dye-sensitized technology, applied in the field of dye-sensitized solar cells, can solve problems such as poor performance of thin-film photoanodes

Inactive Publication Date: 2017-11-07
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Based on this, it is necessary to target pure TiO 2 The problem of poor performance of thin-film photoanodes, providing a preparation method of dye-sensitized solar cell photoanodes with good photoelectric conversion performance

Method used

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  • Preparation method of dye-sensitized solar cell photoanode, dye-sensitized solar cell photoanode and dye-sensitized solar cell

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preparation example Construction

[0024] A method for preparing a photoanode of a dye-sensitized solar cell comprising the following steps:

[0025] S100: TiO 2 , transition metal oxide, water, dispersant, emulsifier and pore-forming agent are mixed to prepare a slurry, wherein, TiO 2 , The molar ratio of transition metal oxide, water, dispersant and emulsifier is 1~3:1:20~60:6~17:3~8, the mass of pore forming agent is TiO 2 and 8% to 11% of the total mass of transition metal oxides.

[0026] Preferably, the titanium dioxide is P25, and the particle diameter of P25 is 20-30 nm.

[0027] Preferably, the transition metal oxide is WO 3 (tungsten trioxide), MoO 3 (Molybdenum trioxide), MnO 2 (manganese dioxide), CoO (cobalt monoxide), NiO (nickel oxide), Fe 2 o 3 (iron trioxide), CuO (copper oxide), and ZnO (zinc oxide). More preferably, the transition metal oxide is MoO 3 、WO 3 and at least one of ZnO.

[0028] Preferably, the transition metal oxides are nanoparticles, and more preferably, the transiti...

Embodiment 1

[0052] MoO 3 Preparation of particles: 0.325 g of MoCl 5 Add it into a mixed solvent composed of 40 g of deionized water and 10 g of absolute ethanol, and stir it magnetically for 1 h. Then react in the reactor at 180° C. for 10 h. After the temperature dropped to room temperature, the precipitate was obtained by centrifugation, washed with deionized water and absolute ethanol several times, and then dried in a vacuum oven at 80°C for 24 hours. Grinding, the obtained powder is calcined in a muffle furnace, calcined at 500 ° C for 1 h, the heating rate is 2 ° C / min, and naturally cooled to room temperature to obtain MoO 3 Particles with a particle size of 300nm.

[0053] Preparation of slurry: 0.3g of P25, 0.15g of MoO 3 Granules, 0.700g of deionized water, 0.5g of acetylacetone, 0.35g of glacial acetic acid, 0.35g of Triton X-100 and 0.050g of polyethylene glycol 20000 were added to the ball mill and mixed evenly at 1000 rpm Minutes under the ball mill for 5h. Uniform ...

Embodiment 2

[0056] MoO in this example 3 The preparation steps are as in Example 1.

[0057] Preparation of slurry.

[0058] 0.3g of P25, 0.30g of MoO 3 Granules, 0.700g of deionized water, 0.5g of ethanol, 0.35g of glacial acetic acid, 0.35g of Triton X-100 and 0.050g of polyethylene glycol 20000 were added to the ball mill and mixed evenly, at 1000 rpm Minutes under the ball mill for 5h. Uniform and stable slurry is obtained after ball milling.

[0059] Preparation of the photoanode of dye-sensitized solar cells: apply the slurry on the conductive glass FTO by scraping method, dry it at room temperature for 20 minutes, put it into the muffle furnace, and raise the temperature to 450°C at a rate of 2°C / min. Calcined for 60 minutes, cooled naturally to obtain a semi-finished product. Then the semi-finished product was placed in a 3mol / L NaOH solution, reacted at 60°C for 40min, washed with deionized water, and then calcined at 100°C for 6h to obtain the photoanode of the dye-sensitiz...

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Abstract

The invention discloses a preparation method of a photo-anode of a dye-sensitized solar cell. The method comprises the following steps that TiO2, transition metal oxides, water, dispersing agents, emulsifying agents and pore forming materials are mixed, and sizing agents are obtained, wherein the molar ratio of the TiO2, the transition metal oxides, the water, the dispersing agents to the emulsifying agents is 1-3: 1: 20-60: 6-17: 3-8, and the mass of the pore forming materials accounts for 8-11% of the total mass of the TiO2 and the transition metal oxides; conductive glass is coated with the sizing agents, burning is performed after drying, and a semi-finished product is obtained; the semi-finished product is processed in an alkaline solution to remove the transition metal oxides and then is dried, and the photo-anode of the dye-sensitized solar cell is obtained. The photo-anode of the dye-sensitized solar cell is good in photoelectric property, and the photovoltaic conversion efficiency of the assembled dye-sensitized solar cell is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of dye-sensitized solar cells, and in particular relates to a preparation method of a dye-sensitized solar cell photoanode, a dye-sensitized solar cell photoanode and a dye-sensitized solar cell. Background technique [0002] Dye-sensitized solar cells have become one of the important technologies that can alleviate the energy crisis because of their low cost, simple and easy preparation method, and relatively high photoelectric conversion efficiency. A typical DSSC (dye-sensitized solar cell) device is usually a sandwich structure, metal oxide semiconductors such as titanium dioxide (TiO 2 ), zinc oxide (ZnO), tungsten trioxide (WO 3 ) is loaded on the conductive glass as the working electrode, which absorbs the dye and transfers electrons; the platinum (Pt) film is used as the counter electrode; the electrolyte solution diffuses between the two electrodes to regenerate the electrons in the dye. Since 199...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542Y02P70/50
Inventor 李文章吕玉霞李洁
Owner CENT SOUTH UNIV
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