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Electrolyte used for dye-sensitized solar cell and preparation method thereof

A technology of solar cells and dye sensitization, applied in the field of electrolytes, can solve the problems of easy leakage, toxicity, and low battery efficiency, and achieve the effects of not easy to leak, easy to package, and high battery efficiency

Inactive Publication Date: 2012-07-11
JIANGSU DEWEI ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrolyte has the advantages of simple preparation method, high ionic conductivity, and good film-forming properties; but this electrolyte contains traditional organic solvents such as PC and EC, which is easy to leak and has certain toxicity
In addition, Chinese invention patent CN101245186A discloses a gel-like polyionic liquid electrolyte and its preparation method; the polyionic liquid is a polyhistidine ester ionic liquid; the electrolyte is non-toxic, environmentally friendly, and has excellent bonding properties. But its battery efficiency is low, only about 1.99%

Method used

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  • Electrolyte used for dye-sensitized solar cell and preparation method thereof
  • Electrolyte used for dye-sensitized solar cell and preparation method thereof
  • Electrolyte used for dye-sensitized solar cell and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 0.02g butylbenzimidazole, 0.02g iodine element, mixed and stirred at 50℃ for 20h to obtain a gel electrolyte, which is dripped between the dye-adsorbed titanium dioxide film and the Pt electrode while it is hot, and the gel electrolyte is fully permeated by further heating Into the titanium dioxide membrane porous film, and then encapsulate to prepare a quasi-solid all-ionic liquid gel solar cell. At room temperature, use xenon lamp to simulate sunlight, light intensity 100mW / cm 2 Under the conditions, the measured battery (effective area 0.16cm 2 ) The photoelectric conversion efficiency is 3.6%.

Embodiment 2

[0035] 0.015 g of butyl benzimidazole, 0.02 g of iodine element, mixed and stirred at 100°C for 10 hours to obtain a gel electrolyte, which is dripped between the dye-adsorbed titanium dioxide film and the Pt electrode while it is hot, and the gel electrolyte is fully permeated by further heating Into the titanium dioxide membrane porous film, and then encapsulate to prepare a quasi-solid all-ionic liquid gel solar cell. At room temperature, use xenon lamp to simulate sunlight, light intensity 100mW / cm 2 Under the conditions, the measured battery (effective area 0.16cm 2 ) The photoelectric conversion efficiency is 4.2%.

Embodiment 3

[0037] 0.015 g of butyl benzimidazole, 0.02 g of iodine element, mixed and stirred for 8 hours at 140°C to obtain a gel electrolyte, which is dripped between the dye-adsorbed titanium dioxide film and the Pt electrode while it is hot, and the gel electrolyte is fully permeated by further heating Into the titanium dioxide membrane porous film, and then encapsulate to prepare a quasi-solid all-ionic liquid gel solar cell. At room temperature, use xenon lamp to simulate sunlight, light intensity 100mW / cm 2 Under the conditions, the measured battery (effective area 0.16cm 2 ) The photoelectric conversion efficiency is 2.7%.

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Abstract

The invention discloses an electrolyte used for a dye-sensitized solar cell and a preparation method thereof. The electrolyte comprises the following components by weight: 5-67% of polyion liquid, 10-84% of small molecular ion liquid, 0.15-5% of additive and 0-6% of iodine, wherein the polyion liquid is as follows; and the small molecular ion liquid is one or more than one selected from compounds as follows. The electrolyte provided by the invention does not contain the traditional toxic solvent, can not pollute the environment and is not easy to leak. In addition, the cell efficiency of the solar cell made from the electrolyte can reach 6% or so, and the solar cell has obvious effect.

Description

technical field [0001] The invention relates to an electrolyte for a dye-sensitized solar cell and a preparation method thereof. Background technique [0002] The dye-sensitized solar cell is a new type of solar cell developed by imitating the principle of photosynthesis. Its main advantages are: abundant raw materials, low cost, relatively simple process technology, and great advantages in large-scale industrial production. All raw materials and production processes are non-toxic and non-polluting, and some materials can be fully recycled, which is of great significance to protecting the human environment. [0003] Existing dye-sensitized solar cells are mainly composed of nanoporous semiconductor films, dye sensitizers, electrolytes, counter electrodes and conductive substrates. Among them, the electrolyte is the core component of the dye-sensitized solar cell, which mainly plays the role of transporting redox pairs, and its performance directly affects the efficiency of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/035H01G9/20H01M14/00H01L51/44H01L51/48
CPCY02E10/542Y02E10/549Y02P70/50
Inventor 严锋赵杰陈小健张金宇付高辉张也
Owner JIANGSU DEWEI ADVANCED MATERIALS