Electrolyte for dye-sensitized solar cell and preparation method thereof

Abstract

The invention relates to electrolyte for a cell, in particular to electrolyte for a dye-sensitized solar cell. The electrolyte comprises a composition A, a composition B and a composition C, wherein the mass ratio of the composition A to the composition B to the composition C is 2-17:1-2:1-2; the composition A is a mixed solution formed by a redox couple, an additive which is chelated with a photo anode, and an ionic liquid; the redox couple comprises elementary iodine; the ionic liquid is an imidazole salt ionic liquid which is in the liquid state at room temperature; the molar ratio of the elementary iodine to the additive is 1:0.2-2; the concentration of the elementary iodine in the composition A of the mixed solution is between 0.01 and 1 mol / L; the composition B is an adhesive for increasing the viscosity of a system; and the composition C is a viscosity regulator for regulating the leveling property of the system under the condition of silk-screen printing. The invention has the advantages that the electrolyte system has small volatility and good long-term stability, and can perform silk-screen printing and meet the requirements of industrialized production.

Description

1. Technical field: [0001] The invention relates to a battery electrolyte, in particular to an electrolyte for a dye-sensitized solar battery. 2. Background technology: [0002] With the increasing severity of the global energy crisis, people are eager to find a sustainable clean energy source. Solar energy, as an inexhaustible natural energy source, has increasingly attracted the attention of countries all over the world. Among them, the material-sensitized solar cell (DSC cell) is considered to be the representative of the third-generation solar cell because of its low cost and wide application. [0003] Electrolyte is one of the core parts of dye-sensitized solar cells, and the composition of the electrolyte greatly affects the photoelectric performance and long-term stability of the cells. Traditional organic liquid electrolytes are highly volatile, and batteries prepared with them are difficult to seal. Long-term use will cause problems such as electrolyte leakage and...

AI Technical Summary

Problems solved by technology

The problems of this method are: the punching process is easy to cause damage to the back electrode coated with the metal layer, thereby affecting the performance of the battery; the cycle process will cause a considerable amount of waste of electrolyte; the battery needs to be packaged twice, which increases the difficulty of packaging; Complicated operation, not suitable for mass production

As people's requirements for the practical application of DSC batteries have been put forward, researchers have begun to use screen printing to prepare nano-oxide photoanodes and metal back electrodes, but research on screen-printed electrolytes has not been reported yet.