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Ionic liquid modified carbine, preparation method for same and application thereof

An ionic liquid and modified technology, applied in the field of solar cells, can solve the problems of low efficiency, low conductivity, limited filling rate of sensitized solar cells, etc., and achieve cost reduction, operation process, simple preparation method, and easily available raw materials. Effect

Inactive Publication Date: 2014-06-11
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, until now, the conversion efficiency of all solid-state dye-sensitized nanocrystalline solar cells is still low
According to literature reports and our research experience, the factors that limit the low efficiency of solid-state dye-sensitized solar cells mainly include the following two aspects: (1) The solid electrolyte is generally a polymer, but due to the large molecular size of the polymer, it is limited in nanometer TiO 2 The filling rate in the pores leads to the fact that the oxidized dye molecules cannot be reduced by the solid electrolyte in time
Therefore, the current of the solid-state dye-sensitized solar energy is lower; (2) The low conductivity of the polymer solid electrolyte limits the transport speed of the carriers, reducing the current and fill factor of the battery

Method used

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  • Ionic liquid modified carbine, preparation method for same and application thereof
  • Ionic liquid modified carbine, preparation method for same and application thereof
  • Ionic liquid modified carbine, preparation method for same and application thereof

Examples

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Embodiment 1

[0022] Embodiment 1: the preparation of piperidine derivatives:

[0023] In a 100 mL round-bottomed flask, mix 8.6 g (0.1 mol) of piperidine with 100 mL of anhydrous tetrahydrofuran, and mix 11.9 g (0.1 mol) of propyne bromide under vigorous stirring. The reaction was stirred for 48 h and filtered to obtain a slightly yellow product. Then the solvent was removed by rotary evaporation, and 9 g of slightly yellow liquid was obtained, yield: 71%.

Embodiment 2

[0024] Example 2: Preparation of imidazole derivatives

[0025] In a 250 mL round-bottomed flask, mix 13.6 g (0.2 mol) imidazole with 100 mL of anhydrous tetrahydrofuran, and mix 24 g (0.2 mol) propyne bromide under vigorous stirring. The reaction was stirred for 48 h and filtered to obtain a slightly yellow product. Then the solvent was removed by rotary evaporation, and 15 g of slightly yellow liquid was obtained, yield: 70%.

Embodiment 3

[0026] Embodiment 3: preparation based on the polyyne of imidazole ionic liquid modification:

[0027] In a 50 mL round-bottomed flask, mix (2 g, 0.019 mol) imidazole and methyl iodide (4.5 g, 0.03 mol), then add 5-30 mL of methanol, at 0-100 o The reaction was stirred at C for 24-72 h, and filtered to obtain 2.9 g of slightly yellow product. The conductivity is 40 S / cm, ( figure 1 a).

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Abstract

The invention belongs to the technical field of solar cells, and particularly relates to ionic liquid modified carbine, a preparation method for the same and application thereof. The preparation method for the ionic liquid modified carbine employs autocatalysis and auto polymerization without any catalyst. The melting point of the ionic liquid modified carbine exceeds 80 DEG C so as to accord with the highest use temperature of a dye-sensitized solar cell. Ionic liquid is high in electric conductivity at the room temperature, and the electric conductivity at the room temperature reaches 40mS / cm. The ionic liquid modified carbine is applied to the all-solid dye-sensitized solar cell with energy conversion efficiency of 6.25%. The preparation method is simple, raw materials are inexpensive and available, operation process is simplified and cost of the cell is reduced by applying the carbine to the all-solid dye-sensitized solar cell, and the cell is high in stability and suitable for mass production.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to an ionic liquid-modified polyalkyne and its preparation method and application, in particular to a high-conductivity oligomer polyalkyne iodide salt in which the ionic liquid is a pendant and its preparation Methods and applications in all-solid-state dye-sensitized solar cells. Background technique [0002] Since the discovery in 1977 that the polyacetylene film doped with iodine or arsenic pentafluoride has metal conductivity, the research on polyyne has been very hot. However, polyynes prepared by traditional methods have low solubility in common organic solvents due to their large conjugated systems, making solution processing difficult. And because the conjugated double bond is easy to react with oxygen in the air to generate carbonyl compounds, resulting in the destruction of the conjugated system and the decrease of electrical conductivity. In order to im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F138/00C08F8/00C07D233/58C07D295/037H01G9/028H01G9/20H01M14/00
CPCY02E10/542
Inventor 王忠胜王鸿
Owner FUDAN UNIV
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