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Quasi-solid electrolyte used for dye-sensitized solar cell and preparation method thereof

A technology for solar cells and dye sensitization, applied in the field of quasi-solid electrolytes and their preparation, can solve the problems of lack of electrical conductivity, limiting the photovoltaic performance of solar cells, etc. The effect of convenient and easy process conditions

Active Publication Date: 2012-06-06
TIANJIN LISHEN BATTERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of material forms a network structure by gelling organic solvents such as acetonitrile or ionic liquids, which can achieve the purpose of solidifying electrolytes and preventing the flow of solvents and ionic liquids. However, none of the existing gelling materials has electrical conductivity. Thus limiting the improvement of photovoltaic performance of dye-sensitized solar cells using quasi-solid electrolytes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of quasi-solid-state electrolyte: use ethanol as an organic solvent, add poly(N-propyl-4-vinylpyridine) iodide salt with a mass concentration of 0.2 g / mL and poly(N-propyl-4-vinylpyridine) iodide salt with a mass concentration of 0.2 g / mL and a molecular weight of 300 Oxyethylene, LiI at 0.15 g / mL and I at 0.04 g / mL 2 , and then ultrasonically shake and mix at room temperature to form a quasi-solid electrolyte.

[0034] In this embodiment, the chemical structure of the poly(N-propyl-4-vinylpyridine) iodide salt is as follows:

[0035] ;

[0036] The chemical structure of the polyoxyethylene is: ;

[0037] Preparation of dye-sensitized solar cells: The photoanode of dye-sensitized solar cells is prepared by pretreating the conductive glass first, and then coating the nanocrystalline titanium dioxide slurry on the surface of the treated conductive glass. The titanium dioxide film obtained by sintering at high temperature (specifically 450~550°C) is heat...

Embodiment 2

[0040] Preparation of quasi-solid electrolyte: use ethanol as an organic solvent, add poly(N-propyl-4-vinylpyridine) iodide salt (same structure as in Example 1) with a mass concentration of 0.2 g / mL, and a mass concentration of 0.2 g The molecular weight of / mL is 1000 polyoxyethylene (the same structure as Example 1), 0.15g / mL of LiI and 0.04g / mL of I 2 , and then ultrasonically shake and mix at room temperature to form a quasi-solid electrolyte.

[0041] With regard to the preparation of the dye-sensitized solar cell, the same preparation method as that of the embodiment 1 was used in this embodiment 2 to prepare the dye-sensitized solar cell.

[0042] Regarding the photovoltaic performance test of the dye-sensitized solar cell: the second embodiment adopts the same test method as that of the embodiment 1 to conduct the photovoltaic performance test of the dye-sensitized solar cell, and the measured current density-voltage curve of the battery is obtained. The photoelectri...

Embodiment 3

[0044] Preparation of quasi-solid electrolyte: use ethanol as an organic solvent, add poly(N-propyl-4-vinylpyridine) iodide salt (same structure as in Example 1) with a mass concentration of 0.2 g / mL, and a mass concentration of 0.2 g The molecular weight of / mL is 20000 polyoxyethylene (the structure with embodiment 1), the LiI of 0.15g / mL and the I of 0.04g / mL 2 , and then ultrasonically shake and mix at room temperature to form a quasi-solid electrolyte.

[0045] With regard to the preparation of the dye-sensitized solar cell, the same preparation method as that of the embodiment 1 was used in Example 3 to prepare the dye-sensitized solar cell.

[0046] About the photovoltaic performance test of the dye-sensitized solar cell: In Example 3, the same test method as in Example 1 was used to test the photovoltaic performance of the dye-sensitized solar cell, and the measured current density-voltage curve of the battery was obtained. The photoelectric conversion efficiency is 0...

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Abstract

The invention discloses quasi-solid electrolyte used for a dye-sensitized solar cell. Gels used for the quasi-solid electrolyte are a complex consisting of polyvinyl pyridine iodide and polyoxyethylene. In addition, the invention also discloses a preparation method of the quasi-solid electrolyte. In the quasi-solid electrolyte used for the dye-sensitized solar cell and the preparation method thereof, the quasi-solid electrolyte has a strong gel conductivity, and can strengthen the conductivity of the quasi-solid electrolyte, fulfill the aim of preventing solvents from flowing and improving the stability of the dye-sensitized solar cell and facilitate the production and application of the dye-sensitized solar cell; and the preparation method of the quasi-solid electrolyte has convenient and feasible process condition, facilitates large-scale popularization and application and has important significance in production practice.

Description

technical field [0001] The invention relates to the technical field of photoelectric conversion, in particular to a quasi-solid electrolyte for dye-sensitized solar cells and a preparation method thereof. Background technique [0002] As early as 1991, Professor Grötzel of the Swiss Institute of Advanced Technology in Lausanne successfully developed a dye-sensitized solar cell with a photoelectric conversion efficiency of 7.1-7.9%. Compared with photovoltaic silicon cells, dye-sensitized solar cells do not use high-purity inorganic semiconductor materials, and have the advantages of simple production process and low production cost. The dye-sensitized solar cell adopts a "sandwich" sandwich structure. From the anode to the cathode, there are conductive glass substrates, nanocrystalline porous titanium dioxide films adsorbing organic dyes, electrolytes, and counter electrodes (specifically, conductive glass deposited with platinum or carbon black. ). [0003] At present, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/028H01G9/20H01M14/00H01L51/44H01L51/48
CPCY02E10/542Y02E10/549Y02P70/50
Inventor 杨华通
Owner TIANJIN LISHEN BATTERY
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