DSC battery manufacturing electrolyte solution

Abstract

The invention discloses a method for optimization and photo anode material surface modification through dye sensitized solar battery electrolyte solution. Organic additive with certain composition or concentration is added into electrolyte solution, additive molecules are combined with the position, uncovered with dye, of the surface of a nano TiO2 film tightly, and the purposes of isolating the reaction of semiconductor photogenerated electrons and reducing agent of electrolyte and reducing charge recombination are achieved; the additive molecules are heterocyclic compounds of N, O or S atoms containing lone electron pairs conventionally. The method has the advantages that large-scale and complex production equipment is omitted, and large-scale production can be implemented; the service life of the battery is not affected; the interface adjustment, control and modification are free of other metal compounds added, and the method is environment-friendly; the battery performance can be optimized significantly by adding the additive, the photoelectric conversion efficiency is improved, and the stability of the battery is improved.

Description

technical field [0001] The invention relates to a chemical field, in particular to a method for optimizing the composition of an electrolyte solution of a dye-sensitized solar cell and modifying the surface of a photoanode material. Background technique [0002] With the continuous consumption of fossil fuels and the continuous increase of energy demand, energy issues have become a serious challenge affecting the survival and development of all human beings. Solar energy has many advantages such as inexhaustible, inexhaustible, safe and reliable, non-polluting and not restricted by geographical environment, and has been paid more and more attention. As a device that converts solar energy into electrical energy, solar cells have incomparable advantages over traditional chemical batteries. 1990s Invented dye-sensitized nano-TiO 2 Solar cells (that is, DSC cells) have attracted great attention due to their low cost of raw materials, high conversion efficiency and simple man...

AI Technical Summary

Problems solved by technology

In order to improve the photoelectric efficiency of DSC cells, different methods have been proposed to reduce the charge recombination of the electric interface of the battery, to improve the performance of the battery to a certain extent, and to improve the photoelectric parameters (such as short-circuit current Jsc, open-circuit voltage Voc, fill factor) of DSC cells partially or as a whole. Fill Factor, etc.), but still have the following disadvantages: (1) The preparation process is complicated and the process is cumbersome; (2) The introduction of a dense coating layer will cause the film to be weakly bonded due to the lattice mismatch between the film layers, causing the film layer to fall off Battery failure; (3) The cost of rare earth ions or polyester co-adsorbents used for modification is high, but the improvement of battery performance is not obvious on the whole, and the cost performance is not high; (4) Although the charge recombination of the thin film electrode interface After the corresponding treatment, the performance of the battery has improved, but the long-term stability of the battery is still not ideal

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