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Dye-sensitized solar cell with ionic liquid co-melting body as electrolyte and preparing method thereof

A technology for solar cells and ionic liquids, applied in the field of solar cells, can solve the problems of short life, volatile electrolyte, easy leakage, etc., and achieve the effects of long service life, good stability and improved efficiency

Active Publication Date: 2014-02-12
宁国市龙晟柔性储能材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By using ionic liquid co-melt electrolyte instead of organic solvent as the main component of the electrolyte, it can effectively solve the problems of volatile electrolyte, easy leakage, and short life in traditional dye-sensitized solar cells.

Method used

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  • Dye-sensitized solar cell with ionic liquid co-melting body as electrolyte and preparing method thereof
  • Dye-sensitized solar cell with ionic liquid co-melting body as electrolyte and preparing method thereof
  • Dye-sensitized solar cell with ionic liquid co-melting body as electrolyte and preparing method thereof

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Experimental program
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Effect test

Embodiment 1

[0045] The specific process of preparing dye-sensitized solar cells with ionic liquid co-melt as electrolyte is as follows:

[0046] (1) To prepare the ionic liquid eutectic, the ionic liquid PMII which is liquid at room temperature and the ionic liquid crystal EMII which is solid at room temperature are mixed in a ratio of 50:50 to obtain the ionic liquid eutectic which is liquid at room temperature.

[0047] (2) To prepare the ionic liquid eutectic electrolyte, add iodine (2 wt%) to the ionic liquid eutectic in a certain proportion to form I - / I 3 - redox couple. The added material is uniformly dispersed by heating with ultrasound or stirring, and cooled to form a dark liquid electrolyte. The conductivity of the electrolyte is 1x10 -4 S / cm.

[0048] (3) Preparation of linear working electrodes. The usable surface of linear dye-sensitized solar cells with TiO 2 Titanium wires of nanotube arrays, or wire electrodes with zinc oxide or other similar n-type semiconducto...

Embodiment 2

[0054] The specific process of preparing dye-sensitized solar cells with ionic liquid co-melt as electrolyte is as follows:

[0055] (1) To prepare an ionic liquid co-melt, the ionic liquid PMII which is liquid at room temperature and the ionic liquid crystal EMII which is solid at room temperature are mixed in a ratio of 25 / 75 to obtain an ionic liquid co-melt which is solid at room temperature.

[0056] (2) To prepare the ionic liquid eutectic electrolyte, add iodine (1% wt%) to the ionic liquid eutectic in a certain proportion to form I - / I 3 - redox couple. The added substances are uniformly dispersed by heating, ultrasonic or stirring, and cooled to form a dark solid electrolyte. The conductivity of the electrolyte is 1x10 -5 S / cm.

[0057] (3) Preparation of linear working electrodes. The usable surface of linear dye-sensitized solar cells with TiO 2 Titanium wires of nanotube arrays, or wire electrodes with zinc oxide or other similar n-type semiconductors on...

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Abstract

The invention belongs to the field of solar cell preparation, and particularly discloses a linear dye-sensitized solar cell excellent in heat stability. According to the linear dye-sensitized solar cell and a preparing method thereof, two or more kinds of ionic liquid serving as the substrate of an electrolyte are used to prepare an ionic liquid co-melting body electrolyte which is in a solid state or liquid state at the indoor temperature, and a working electrode with titanium dioxide crystals arranged on the surface and a fibrous counter electrode are used to prepare the linear dye-sensitized solar cell. The co-melting body electrolyte is excellent in heat stability, does not volatilize, and replaces a liquid electrolyte which is used in a traditional dye-sensitized solar cell, contains organic solvent and is volatile and unstable, and therefore the heat stability and service life of the linear dye-sensitized solar cell are greatly improved. Irreversible damage can not occur to the solar cell when the solar cell is heated to 120 DEG C. The efficiency of the solar cell can still be more than 80% of the initial efficiency when the solar cell is placed in a non-strict sealing state for 30days.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a dye-sensitized solar cell and a preparation method thereof. Background technique [0002] Dye-sensitized solar cells have attracted extensive attention in both academia and industry due to their advantages of low cost, high efficiency, and easy preparation [1]. Linear solar cell devices have the characteristics of weaving and easy integration, and may be made into portable power supply devices, so they have attracted much attention [2-4]. Using the titanium wire whose surface is anodized to generate titanium dioxide nanotubes as the working electrode, carbon nanotube fiber or metal platinum wire as the counter electrode, the prepared linear dye-sensitized solar cell has a certain degree of flexibility[5]. [0003] However, linear devices are limited by their structure, and packaging is relatively difficult, and they often need to be deformed frequently when use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/022
CPCY02E10/542
Inventor 彭慧胜李厚朴仰志斌
Owner 宁国市龙晟柔性储能材料科技有限公司