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Stannic oxide membrane electrode material for dye-sensitized solar cell and preparing method thereof

A thin-film electrode and tin oxide technology, applied in photosensitive equipment, electrolytic capacitors, circuits, etc., can solve the problems of limited photoelectric conversion efficiency, insufficient sunlight utilization rate, and low dye adsorption, achieve high light scattering ability, and improve photoelectric conversion Efficiency, the effect of increasing the adsorption capacity

Active Publication Date: 2013-12-25
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the currently prepared SnO 2 Photoanode materials have the disadvantages of less dye adsorption and insufficient utilization of sunlight, which largely limits the improvement of their photoelectric conversion efficiency.

Method used

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  • Stannic oxide membrane electrode material for dye-sensitized solar cell and preparing method thereof
  • Stannic oxide membrane electrode material for dye-sensitized solar cell and preparing method thereof
  • Stannic oxide membrane electrode material for dye-sensitized solar cell and preparing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The sucrose aqueous solution with a concentration of 1.5M was hydrothermally treated in an autoclave at 200°C for 135min; after natural cooling, the filtered carbon spheres were washed with water and ethanol several times, and dried in an oven at 80°C for 12h. The particle size of carbon spheres is 3 μm. Disperse 0.6 g of carbon spheres into a 0.05 M NaOH solution and stir for 1 h, then wash with distilled water and dry.

[0027]The carbon spheres treated with alkaline solution were evenly dispersed in 30mL of SnCl with a concentration of 2M 4 In the aqueous solution, stir for 4 hours, filter with suction, wash with deionized water 3 times, put it in an oven at 80°C for 12 hours, put the obtained solid powder in a muffle furnace, and raise the temperature to 500°C at a rate of 1°C / min. Calcined at constant temperature for 1h. After natural cooling, SnO with the outermost two shells adjacent 2 Five-shell hollow sphere;

[0028] The prepared SnO adjacent to the outerm...

Embodiment 2

[0031] The sucrose aqueous solution with a concentration of 1.5M was hydrothermally treated in an autoclave at 200°C for 135min; after natural cooling, the filtered carbon spheres were washed with water and ethanol several times, and dried in an oven at 80°C for 12h. The particle size of carbon spheres is 3 μm. Disperse 0.6 g of carbon spheres into a 0.05 M NaOH solution and stir for 1 h, then wash with distilled water and dry.

[0032] The carbon spheres treated with alkaline solution were evenly dispersed in 30mL of SnCl with a concentration of 1.5M 4 In the aqueous solution, stir for 4 hours, filter with suction, wash with deionized water 3 times, put it in an oven at 80°C for 12 hours, put the obtained solid powder in a muffle furnace, and raise the temperature to 500°C at a rate of 1°C / min. Calcined at constant temperature for 1h. After natural cooling, SnO with the outermost two shells adjacent 2 four-shell hollow sphere;

[0033] The prepared SnO adjacent to the out...

Embodiment 3

[0035] The sucrose aqueous solution with a concentration of 1.5M was hydrothermally treated in an autoclave at 200°C for 135min; after natural cooling, the filtered carbon spheres were washed with water and ethanol several times, and dried in an oven at 80°C for 12h. The particle size of carbon spheres is 3 μm. Disperse 0.6 g of carbon spheres into a 0.06 M NaOH solution and stir for 2 h, then wash with distilled water and dry.

[0036] The carbon spheres treated with alkaline solution were evenly dispersed in 30mL of SnCl with a concentration of 1.0M 4 In the aqueous solution, stir for 4 hours, filter with suction, wash with deionized water 3 times, put it in an oven at 80°C for 12 hours, put the obtained solid powder in a muffle furnace, and raise the temperature to 500°C at a rate of 1°C / min. Calcined at constant temperature for 1h. After natural cooling, SnO with the outermost two shells adjacent 2 Three-shell hollow sphere;

[0037] The prepared SnO adjacent to the ou...

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Abstract

The invention provides a stannic oxide (SnO2) membrane electrode material for a dye-sensitized solar cell and a preparing method thereof. A carbon sphere synthesized through a hydrothermal method is utilized as a formwork, alkali treatment is carried out on the carbon sphere formwork to enhance the adsorbing capacity of the surface layer of the carbon sphere formwork to stannic ions, meanwhile the concentration of precursor tin salt solution is regulated to prepare the stannic oxide multi-shell hollow sphere with two adjacent outmost shells, and the hollow spheres are utilized as the dye-sensitized solar cell electrode materials to increase transmission paths of light in the membrane electrode. The stannic oxide membrane electrode material has excellent light scattering capacity, improves the absorption rate of dye molecules to light and obviously improves the photoelectric converting efficiency of the dye-sensitized solar cell. In addition, the preparing method has certain universality. The Zno, TiO2, Co3O4, CuO and Fe2O3 multi-shell hollow sphere with the two adjacent outmost shells is prepared by changing metal precursor salt solution. The preparing method is convenient to operate, high in controllability and wide in application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a tin oxide (SnO 2 ) Preparation method of multi-shell hollow sphere thin film electrode material. Background technique [0002] Dye-sensitized solar cells (DSSCs) have attracted widespread attention due to their facile fabrication process, low cost, and relatively high conversion efficiency. Among the various components of DSSCs, the wide bandgap metal oxide semiconductor film with a large specific surface for dye adsorption is very critical, and TiO is usually used 2 Nanoparticles as photoanode thin film materials. However, the electrons generated after the excitation of the dye are rapidly injected into TiO 2 The speed compared to that of TiO 2 The inherent electron mobility rate appears to be low, leading to increased recombination, thereby reducing cell efficiency. Therefore, people try other metal oxide semiconductors to replace TiO 2 . [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/20
CPCY02E10/542Y02P70/50
Inventor 王丹董正洪杨梅毛丹
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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