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Carbon counter electrode for dye-sensitized solar cell and preparation method for carbon counter electrode

A solar cell and dye sensitization technology, applied in the field of carbon counter electrode and its preparation, can solve the problems of high manufacturing cost of DSSC, achieve low manufacturing cost, strong resistance to electrolyte corrosion, and promote commercialization and popularization.

Inactive Publication Date: 2012-07-11
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to: aim at the problem of high manufacturing cost of DSSC at present, provide a kind of carbon counter electrode with low price, substrate and catalytic active layer are both carbon materials, and have an integrated structure with high adhesion and its preparation method

Method used

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  • Carbon counter electrode for dye-sensitized solar cell and preparation method for carbon counter electrode
  • Carbon counter electrode for dye-sensitized solar cell and preparation method for carbon counter electrode
  • Carbon counter electrode for dye-sensitized solar cell and preparation method for carbon counter electrode

Examples

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Embodiment 1

[0035] Weigh 4g of coal powder with a particle size of 10μm, add 1g of conductive graphite and 0.2g of carboxymethyl cellulose, mix evenly, use a hydraulic press to cold press under a pressure of 50MPa to prepare a carbon plate, and then pass through 900 under a nitrogen atmosphere. ℃ carbonization to prepare a carbon substrate with a thickness of about 2.0mm and a resistance of 134mΩ / □. Use the DMAc solution of mesoporous phenolic resin with a mass percentage of 14% as the polymer solution, compound it on the carbon substrate by spin coating, heat and dry it in an oven at 80°C for 24 hours, and form a thin polymer layer on the carbon substrate , placed in a carbonization furnace under the protection of argon, the polymer film is carbonized at 750°C to form an integrated pure carbon counter electrode with a catalytic active carbon layer; the catalytic active carbon layer is a disordered mesoporous structure with a thickness of about 8 μm and a pore diameter of about 5.5 nm, th...

Embodiment 2

[0037] Weigh 4g of coal powder with a particle size of 5μm, add 1.5g of conductive carbon black and 0.2g of carboxymethyl cellulose, mix evenly, and use a hydraulic press to cold-press under a pressure of 30MPa to prepare a carbon plate, and then under a nitrogen atmosphere After carbonization at 950°C, a carbon substrate was prepared with a thickness of about 1mm and a resistance of 0.2Ω / □. At the same time, the DMAc solution of mesoporous polyimide, mesoporous phenolic resin, mesoporous polyarylether ketone, benzoxazine resin, polyether sulfone ketone and cyanate resin with a mass percentage of 12% is used as the polymer solution, and the The method of spin coating is compounded on the carbon substrate that has been polished and polished on the surface, heated to 60°C in an oven for 24 hours according to the program, and a thin porous polymer layer is formed on the substrate, which is placed in a carbonization furnace under the protection of argon. An integrated carbon count...

Embodiment 3

[0041] Weigh 4g of plant-based carbon powder with a particle size of 3μm, add 1.0g of carbon fiber and 0.5g of phenolic resin, mix evenly, and use a hydraulic press to cold-press under a pressure of 25MPa to prepare a carbon plate, and carbonize it at 1000°C under a nitrogen atmosphere , to prepare a carbon substrate with a thickness of about 1.2mm and a resistance of 679mΩ / □. Use mesoporous polyimide DMAc solution with a mass percentage of 10% as the polymer solution, compound it on the carbon substrate by spraying, heat and dry in an oven at 60°C for 20 hours, form a thin polymer layer on the substrate, and put Into the carbonization furnace under the protection of argon, the polymer film is carbonized at 750 °C to form an integrated pure carbon counter electrode with a catalytic active carbon layer; the catalytic active carbon layer is a disordered micro-mesoporous structure with a thickness of 1 μm and a pore diameter of about 5 nm. Surface area is 720m 2 g -1 At the sam...

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Abstract

The invention relates to a carbon counter electrode for a dye-sensitized solar cell and a preparation method for the carbon counter electrode, and belongs to the field of carbon materials. The carbon counter electrode consists of a carbon substrate and a carbon catalytically-active layer compounded on the surface of the carbon substrate. The preparation method comprises the following steps of: forming and carbonizing the carbon substrate, and compounding and carbonizing the carbon catalytically-active layer on the carbon substrate. Because the precursor polymer solution of the carbon catalytically-active layer has a pore seepage effect in the coating compounding process, the polymer solution is firmly attached to the carbon substrate, and an integrated structure is formed by high-temperature carbonization. The prepared carbon counter electrode has high catalytic activity and good electric conductivity, the series resistance and the interface charge exchange resistance of a cell element are reduced, and the short-circuit current density (Jsc), the filling factor (ff) and the photoelectric conversion efficiency (eta) of the dye-sensitized solar cell are improved.

Description

technical field [0001] The invention relates to a carbon counter electrode for a dye-sensitized solar cell and a preparation method thereof, belonging to the field of carbon materials. Background technique [0002] Since 1991, Michael from the Higher Technical Institute of Lausanne, Switzerland The research team led by the professor introduced nanocrystalline porous films into dye-sensitized solar cells (Dye-sensitized Solar Cells, referred to as DSSC), which greatly improved the photoelectric conversion efficiency of this cell (Nature, Vol.353, 737 , 1991), gradually becoming one of the most promising new solar cells. Compared with silicon-based solar cells, DSSC cells have attracted worldwide attention and rapidly set off a research boom due to their low cost, simple process and relatively high photoelectric conversion efficiency. [0003] Dye-sensitized solar cells are mainly divided into three parts: a semiconductor thin film photoanode with dyes adsorbed on it, a cou...

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 王同华马廷丽孟凡宁李琳邱介山
Owner DALIAN UNIV OF TECH
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