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Method of preparing dye-sensitized solar cell XS (X=Co, Ni) counter electrode

A technology of solar cells and dye sensitization, which is applied in the field of nanomaterial preparation technology and energy, and can solve the problems of expensive electrode materials and unsuitable for large-scale applications.

Inactive Publication Date: 2017-01-04
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing dye-sensitized solar cell counter electrode material is expensive and not suitable for large-scale application, and provides a dye-sensitized solar cell XS (X=Co, Ni) counter electrode one-step solvothermal preparation method

Method used

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  • Method of preparing dye-sensitized solar cell XS (X=Co, Ni) counter electrode
  • Method of preparing dye-sensitized solar cell XS (X=Co, Ni) counter electrode
  • Method of preparing dye-sensitized solar cell XS (X=Co, Ni) counter electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Example 1 The solvothermal condition is a mixed solution of CoS counter electrode prepared by reacting at 180°C for 18 hours with a molar ratio of cobalt acetate tetrahydrate: thiourea of ​​1:1.5, and a volume ratio of ammonia to ethanol of 5:2. Pour it into the reaction kettle, put the FTO conductive glass into the reaction kettle (the conductive surface is facing down), and react at 180° C. for 18 hours. The obtained FTO sample is washed with ethanol and dried to obtain a counter electrode.

[0023] TiO 2 Preparation of photoanode and battery performance test:

[0024] The photoanode of the dye-sensitized solar cell is prepared by coating the titanium dioxide nanocrystalline film, and the titanium dioxide slurry is made by hydrothermal synthesis (see S. Ito, T. Murakami, P. Comte, P. Liska, C. Grätzel, M. Nazeeruddin, M. Grätzel, Thin Solid Films, 516 (2008) 4613-4619).

[0025] Use N719 to sensitize the photoanode of the battery, and drop a redox electrolyte on the electro...

Embodiment 2

[0027] Example 2 The solvothermal condition is a mixed solution of NiS counter electrode prepared by reacting at 180°C for 18 hours with a molar ratio of nickel acetate tetrahydrate: thiourea of ​​1:1.5, and a volume ratio of ammonia to ethanol of 1:6. Pour it into the reactor, put the FTO conductive glass into the reactor (the conductive surface is facing down), and react at 180° C. for 18 hours. The obtained FTO sample is rinsed with ethanol and dried to obtain a counter electrode.

[0028] TiO 2 The preparation and battery performance test methods and steps of the photoanode are the same as those in Example 1.

[0029] The J-V curve obtained from the performance test of the dye-sensitized solar cell assembled by the sample as the counter electrode is as follows: figure 1 Shown. It can be seen that the conversion efficiency reaches 6.79%, which is higher than the 6.44% conversion efficiency of the Pt counter electrode. Light transmittance such as image 3 Shown.

Embodiment 3

[0030] Example 3 The molar ratio is cobalt acetate tetrahydrate: thiourea is 1:1. The prepared CoS counter electrode preparation molar ratio is cobalt acetate tetrahydrate: thiourea is 1:1, and the volume ratio of ammonia to ethanol is 4:3 mixed solution, pour it into the reactor, put the FTO conductive glass into the reactor (the conductive surface is down), react at 180°C for 18 hours, rinse the obtained FTO sample with ethanol, and dry it to obtain electrode.

[0031] TiO 2 The preparation and battery performance test methods and steps of the photoanode are the same as those in Example 1.

[0032] The J-V curve obtained from the performance test of the dye-sensitized solar cell assembled by the sample as the counter electrode is as follows: Figure 4 Shown. It can be seen that the conversion efficiency reaches 6.35%, which is approximately equal to the conversion efficiency of Pt to the electrode 6.39%.

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Abstract

The invention discloses a method of preparing a dye-sensitized solar cell XS (X=Co, Ni) counter electrode. The method comprises the following steps: X(CH3COO)2.4H2O (X=Co, Ni) and thiourea are dissolved in a mixed solution of ammonia and ethanol; FTO conductive glass is cleaned and is placed, at an angle of 50 DEG, in a stainless steel reactor with a polytetrafluoroethylene ling, and the conductive surface faces downwardly; and the mixed solution is transferred to the reactor for solvent thermal reaction. After the reaction, the conductive glass is taken out, ethanol is used for cleaning and drying, and thus, the XS (X=Co, Ni) counter electrode is obtained. According to the XS (X=Co, Ni) counter electrode preparation method disclosed by the invention, the method is simple, the preparation period is short, and quick and large-area preparation can be carried out; and besides, the prepared counter electrode has small interface charge transfer resistance and high in catalytic activity, the thin film has light transmittance, and the photoelectric conversion efficiency of the dye-sensitized solar cell can be effectively enhanced.

Description

Technical field [0001] The invention belongs to the fields of nano material preparation technology and energy, and relates to a method for preparing a dye-sensitized solar cell counter electrode material. Background technique [0002] As the global population continues to grow, people’s dependence on energy has gradually deepened, leading to a series of problems such as energy depletion and environmental pollution. Therefore, the development of renewable clean energy is one of the important ways and measures to alleviate the world energy crisis and environmental pressure. One. Solar energy is inexhaustible and inexhaustible compared to renewable energy sources such as hydropower, wind energy, and geothermal energy. Moreover, it is easy to obtain, clean and pollution-free, its use is not restricted by region, and the utilization cost is relatively low. At present, the most widely researched and applied solar cell is silicon-based solar cell, but the production process of silicon...

Claims

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Application Information

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IPC IPC(8): H01G9/20C01G51/00C01G53/11C03C17/22
CPCY02E10/542H01G9/2022C01G51/30C01G53/11C03C17/22C03C2217/288
Inventor 孙小华汪佳丽陈琳琳鲍潮郑琳杰
Owner CHINA THREE GORGES UNIV
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