A method for preparing a dye-sensitized solar cell counter electrode using a tantalum-based counter electrode catalytic material

Abstract

The invention discloses a method for preparing a dye-sensitized solar cell counter electrode by using a tantalum-based counter electrode catalytic material, comprising: 1) preparing a tantalum-based compound counter electrode catalytic material; 2) preparing a tantalum-based composite counter electrode catalytic material; 3 ) Using a tantalum-based compound or a tantalum-based composite material to prepare a counter electrode catalytic material slurry, coating the counter electrode catalytic material slurry on one side of the conductive glass to form a counter electrode catalytic layer film, and heat-treating the film to obtain a tantalum based counter electrode catalytic film. The counter electrode catalytic material in the method has excellent catalytic activity, electrochemical stability and photovoltaic performance, and can replace noble metal Pt electrodes and be applied to dye-sensitized solar cell devices. The synthesized counter-electrode catalytic material and the constructed counter-electrode film have low cost, simple operation, and strong compatibility with the preparation process of the photoanode. The performance of the constructed counter electrode catalyst has been greatly improved, which ensures the stability, reliability and practicality of the electrode performance, and has application and promotion value.

Description

Technical field [0001] The invention belongs to the technical field of green renewable clean energy, and specifically relates to a method for preparing a counter electrode of a dye-sensitized solar cell by using a tantalum-based counter electrode catalytic material. Background technique [0002] Environmental pollution caused by energy shortages and the use of fossil fuels is the biggest challenge facing human society. The development and utilization of renewable energy (solar energy, wind energy, biomass energy, etc.) is the key to solving this problem. As the most abundant renewable energy source, solar energy has unique advantages and huge potential for development and utilization, making the development and utilization of solar cells a very important research topic in recent years. [0003] Compared with silicon-based and thin-film solar cells, the Swiss scientist M. The new generation of dye sensitized solar cell (DSSC) invented, due to its low production cost, simple proces...

AI Technical Summary

Problems solved by technology

[0006] The main problem with carbon materials is poor adhesion to conductive substrates

If the counter electrode film is too thin, the catalytic activity is insufficient; if the counter electrode film is too thick, not only the device is bulky, but also the conductive film is easy to fall off from the conductive substrate, which affects the stability of the battery

Furthermore, carbon materials are not ideal counter electrode materials for transparent, translucent, colorful DSSCs

Conductive polymer materials have poor thermal stability and poor corrosion resistance

For most of the Pt-like counter electrode catalytic materials that have been developed, the photoelectric conversion efficiency is relatively low, and the repeatability and stability are not good, which hinders the further promotion and application of this type of catalytic materials in the fields of chemistry and electrochemistry.

As for composite counter electrode catalytic materials, the main problems are: ① lack of stability assessment reduces the feasibility of its application; ② the carbon content cannot be effectively controlled, resulting in poor adhesion; ③ the controllability of the relative proportion of each component Poor comparison limits further optimization of its performance

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