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Counter electrode of dye-sensitized solar battery, preparation method and applications of tungsten disulfide and molybdenum disulfide

A solar cell and dye-sensitized technology, which is applied in the field of dye-sensitized solar cells, can solve the problems that restrict the large-scale production and wide application of dye-sensitized solar cells, limited Pt reserves, and high price, and achieve high photoelectric conversion efficiency, Low price, low price effect

Active Publication Date: 2012-06-27
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the Pt counter electrode is mostly used. Although the Pt counter electrode has good catalytic activity, the cost is too high and expensive, which restricts the large-scale production and wide application of dye-sensitized solar cells, and the reserves of Pt are limited. Therefore, it is an urgent problem to develop a new type of counter electrode with high catalytic activity and low cost to replace the widely used Pt counter electrode.

Method used

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  • Counter electrode of dye-sensitized solar battery, preparation method and applications of tungsten disulfide and molybdenum disulfide
  • Counter electrode of dye-sensitized solar battery, preparation method and applications of tungsten disulfide and molybdenum disulfide
  • Counter electrode of dye-sensitized solar battery, preparation method and applications of tungsten disulfide and molybdenum disulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The counter electrode of dye-sensitized solar cell is made by the following steps:

[0026] (1) Disperse 0.6g tungsten disulfide particles uniformly in 1ml n-butanol to prepare system A;

[0027] (2) Take 0.03g of TiO with a particle size of 25nm 2 Nanocrystalline particles are uniformly dispersed in 1ml n-butanol to prepare system B;

[0028] (3) Dissolve 0.1g ethyl cellulose in 0.5ml n-butanol to prepare system C;

[0029] (4) Mix the A system, B system and C system, mechanically stir for 12 hours, ultrasonically disperse for 30 minutes, and grind for 1 hour to obtain a uniformly dispersed slurry D. The surface of the conductive substrate is scraped and sintered three times to obtain Dye-sensitized solar cell counter electrode; the specific steps of the first scraping and sintering treatment are: coating the slurry D on the surface of the transparent conductive glass substrate by the scraping method, and then sintering at 300°C for 30 minutes; the second The specific steps o...

Embodiment 2

[0031] The counter electrode of dye-sensitized solar cell is made by the following steps:

[0032] (1) Disperse 0.2g tungsten disulfide particles uniformly in 1ml n-butanol to prepare A system;

[0033] (2) Take 0.04g of TiO with a particle size of 25nm 2 Nanocrystalline particles and 0.06g of carbon nanoparticles with a diameter of 40nm were uniformly dispersed in 1ml of n-butanol to prepare system B;

[0034] (3) Dissolve 0.1g ethyl cellulose in 0.5ml n-butanol to prepare system C;

[0035] (4) Mix the A system, the B system and the C system, mechanically stir for 12 hours, ultrasonically disperse for 30 minutes, and grind for 1 hour to obtain a uniformly dispersed slurry D. Perform three screen printing and sintering treatments on the surface of the conductive substrate. Obtain the dye-sensitized solar cell counter electrode; the specific steps of the first screen printing and sintering treatment are: use the screen printing method to coat the paste D on the surface of the transpar...

Embodiment 3

[0037] The counter electrode of dye-sensitized solar cell is made by the following steps:

[0038] (1) Disperse 0.6g tungsten disulfide particles uniformly in 1ml n-butanol to prepare system A;

[0039] (2) Take 0.03g of TiO with a particle size of 25nm 2 Nanocrystalline particles and 0.03g of carbon nanoparticles with a diameter of 40nm are uniformly dispersed in 1ml of n-butanol to prepare system B;

[0040] (3) Dissolve 0.1g ethyl cellulose in 0.5ml n-butanol to prepare system C;

[0041] (4) Mix the A system, B system and C system, mechanically stir for 12 hours, ultrasonically disperse for 30 minutes, and grind for 1 hour to obtain a uniformly dispersed slurry D. The surface of the conductive substrate is scraped and sintered three times to obtain Dye-sensitized solar cell counter electrode; the specific steps of the first scraping and sintering treatment are: coating the slurry D on the surface of the transparent conductive glass substrate by the scraping method, and then sinter...

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Abstract

The invention belongs to the technical field of dye-sensitized solar batteries, and particularly discloses a counter electrode of a dye-sensitized solar battery as well as a preparation method and applications thereof. The counter electrode of the dye-sensitized solar battery is prepared by the following steps of: scattering tungsten disulfide microparticles or molybdenum disulfide microparticles in an organic solvent to obtain a system A; scattering at least one of TiO2 nanocrystal particles, ZnO nanocrystal particles, SnO2 nanocrystal particles, carbon nano particles and carbon nano tubes in the organic solvent to obtain a system B; dissolving ethyl cellulose or carboxymethylcellulose in the organic solvent to obtain a system C; and mixing the systems A, B and C to obtain homodisperse slurry D, coating the slurry D on the surface of an electric conduction base, and sintering at high temperature to prepare the counter electrode. The counter electrode has a good catalytic effect due to the oxidization-reduction reaction of redox electrolyte I3<-> / I<->, the price is low, and the production cost of the dye-sensitized solar battery is lowered greatly.

Description

Technical field [0001] The invention relates to the technical field of dye-sensitized solar cells, in particular to the application of tungsten disulfide and molybdenum disulfide, and also to a dye-sensitized solar cell counter electrode prepared by using tungsten disulfide and molybdenum disulfide as catalytically active materials And its preparation method. Background technique [0002] With the rapid development of the world economy, the consumption of fossil fuels continues to accelerate, and the energy crisis and environmental pollution caused by this have become urgent problems in the world and mankind. The energy directly radiated by the sun to the earth is abundant, widely distributed, renewable, and does not pollute the environment. It is an ideal alternative energy recognized by the international community. Therefore, solar cells as photoelectric conversion devices have attracted the attention of the scientific community around the world. [0003] Since the early 1990s ...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/20H01M14/00H01L51/44H01L51/48
CPCY02E10/542Y02E10/549Y02P70/50
Inventor 李胜军郑海务陈增李永军张伟风
Owner HENAN UNIVERSITY
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