A kind of dye-sensitized solar cell solid electrolyte and preparation method thereof

Abstract

The invention discloses solid electrolyte for a dye-sensitized solar cell. The solid electrolyte comprises the following components in parts by weight: 30-40 parts of benzonitrile type alkynyl quaternary ammonium salt ionic crystal, 20-30 parts of 3-cyanobenzyl tripropargyl quaternary ammonium salt organic ion, 2-5 parts of ferrocenyl-acetenyl, 1-3 parts of cyanoacetylene, 4-8 parts of elemental iodine, 4-8 parts of iodate and 5-10 parts of additives. The preparation method of the solid electrolyte for the dye-sensitized solar cell comprises the following steps: heating, melting, uniformly stirring to form a mixture, adding the elemental iodine and additives, heating, melting and uniformly stirring, cooling and curing. According to the solid electrolyte for the dye-sensitized solar cell disclosed by the invention, leakage and volatilization problems can be effectively solved, and the electrolyte is high in electrical conductivity and has obvious effects in improving the stability and photovoltaic conversion efficiency of the dye-sensitized solar cell and prolonging the service life cycle.

Description

technical field [0001] The invention belongs to the technical field of dye-sensitized solar cells, and relates to a component of a dye-sensitized solar cell, in particular to a solid electrolyte for a dye-sensitized solar cell and a preparation method thereof. Background technique [0002] In recent years, clean new energy devices have attracted widespread attention from researchers around the world. Solar cells are one of many clean new energy devices, which can directly convert solar energy into electrical energy without causing environmental pollution, and the solar energy they use is a renewable resource, which can effectively solve the current environmental problems that restrict social progress and development. problems and energy issues. There are many types of solar cells. Among them, the most promising type of solar cells is dye-sensitized solar cells. Due to the advantages of high efficiency, low cost, and green and non-polluting, this type of solar cells has beco...

AI Technical Summary

Problems solved by technology

Among them, the traditional liquid state has problems such as volatile electrolyte solvents, easy leakage, possible reaction with sealants, and high toxicity, which affect its stability and future applications.

There are disadvantages such as volatile, difficult to package, high toxicity, and poor stability; quasi-solid electrolytes contain a small amount of solvents such as ethylene carbonate, propylene carbonate, and ionic liquids, which also have problems of easy leakage and difficult packaging, and there are problems with long-term use. The leakage problem will cause the decline of battery stability, and this kind of electrolyte has poor conductivity, and the impedance between the electrolyte and the photoanode and the counter electrode interface is high. These defects limit its wide application in dye-sensitized solar cells. use

Although the solid electrolytes in the prior art can effectively solve the problems of leakage and volatilization, the conductivity of such electrolytes is low

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