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Controllable zwitterionic compound, synthesis method and application thereof in dye-sensitized solar cell

A technology of imidazole and methyl butyl carboxylate, which is applied in the field of chemical synthesis and material interface, can solve the problems of low yield and long reaction time, and achieve the effects of high yield, simple operation and high melting point

Inactive Publication Date: 2013-03-06
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional synthesis methods of zwitterionic compounds reported in the existing literature have long reaction times and low yields, and require the use of solvents that cause environmental pollution

Method used

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  • Controllable zwitterionic compound, synthesis method and application thereof in dye-sensitized solar cell
  • Controllable zwitterionic compound, synthesis method and application thereof in dye-sensitized solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Component 1 is added to the mixture of component 2 and component 4 as the electrolyte of the dye-sensitized solar cell.

[0023] Electrolyte formula: formulate a mixture of component 1, component 2 and component 4.

[0024] (1), Component 1: Controllable zwitterionic compound, its structural formula needs to be written out, the same below

[0025] Controllable ionic amphoteric compounds are electrically neutral in their molecules as a whole, and they contain functional groups with positive and negative charges. The positively charged functional groups are furan, thiophene, pyrrole, thiazole, imidazole, pyridine, pyrimidine, quinoline, benzimidazole, o-phenanthroline, bipyridine, terpyridine alkane derivatives or olefin derivatives or N, O, One of the alkyl substituents of P; the negatively charged functional group is one of carboxyl, sulfonic acid, nitro, phosphoric acid, boronic acid substituents and their alkene and benzene substituted derivatives.

[0026] The molar concent...

Embodiment 2

[0034] Add component 1 to the ethanol solution of component 3 as the dye solution of the dye-sensitized solar cell. The molar concentration of component 1 is 0.01-0.5mmol / L, the molar concentration of component 3 is 0.01-0.5mmol / L,

[0035] (1) Component 1 is a controllable zwitterionic compound.

[0036] (2) Component 3 is a dye. Among the dyes for dye-sensitized solar cells, the dyes include N719, N3, black dye, Z907, Z910, Z955, K8, K19, K51, K73, HRS-1 and other ruthenium pyridine complexes; osmium pyridine complexes ; Merocyanine, porphyrin metal complexes, indoline derivatives, coumarin derivatives and other organic dyes.

[0037] (3), battery production

[0038] TiO for dye-sensitized solar cells 2 The photoanode was made according to Example 1: The prepared TiO 2 The photoanode is immersed in an ethanol solution containing 0.5 mmol / L of dye and 0.5 mmol / L of controllable zwitterionic compound overnight. Then the transparent conductive glass covered with Pt nanoparticles is ...

Embodiment 3

[0040] Autoclave synthesis method of controllable zwitterionic compounds:

[0041] Mix component A and component B uniformly according to the molar ratio of 1.5-2.5, and react in an airtight autoclave. The external temperature is controlled at 120-180℃ and the reaction time is 1-10h. The product is ground to obtain a white solid. Its main component is Control zwitterionic compounds.

[0042] Component A is one of the following substances: furan, thiophene, pyrrole, thiazole, imidazole, pyridine, pyrimidine, quinoline, benzimidazole, o-phenanthroline, bipyridine and terpyridine alkane derivatives or olefin derivatives Or N, O, P alkyl substituents;

[0043] Component B is one of the following substances: sultones and their derivatives, carboxylic acid lactones (γ-valerolactone, γ-butyrolactone, γ-caprolactone, γ-eneptolactone, γ -Caprolactone, γ-nonanolactone, γ-decanolactone, γ-undecanolide, ω-caprolactone, DL-pantothenolactone, andrographolide, diketene, coumarin, gluconic acid E...

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Abstract

The invention discloses a controllable zwitterionic compound, an autoclave synthesis method and application thereof in a dye-sensitized solar cell. The whole molecule of the controllable zwitterionic compound is in electric neutrality, and the inner part of the molecule is provided with functional groups having positive and negative charges. The autoclave synthesis method of the controllable zwitterionic compound has the advantages of no solvent, high yield, short time, no inert gas protection, simple operation and green environmental protection. The controllable zwitterionic compound has good thermal stability and low cost, exhibits excellent electrochemical reversibility, wide electrochemical window and other characteristics as an addictive in the dye-sensitized solar cell; and because the groups with the positive and negative charges at the two ends of the inner of the molecule have different mechanisms of action on a TiO2 / electrolyte interface, a TiO2 conduction band position and the interface impedance of the TiO2 / electrolyte interface are regulated by adjusting the adsorptive capacity of the functional groups at the two ends, thereby changing open-circuit voltage and short-circuit current and effectively improving cell efficiency.

Description

Technical field [0001] The present invention relates to the field of chemical synthesis and material interface, in particular to a controllable zwitterionic compound and its autoclave synthesis method and its application in dye-sensitized solar cells. Background technique [0002] Ecole Polytechnique Lausanne (EPFL) The research team led by the professor first applied nanoporous electrodes to dye-sensitized solar cells in 1991, and the photoelectric conversion efficiency reached 7.1%. So far, the photoelectric conversion efficiency has increased to 10% to 11%, and the life span has reached more than 20 years, which has become a hot spot in domestic and foreign research in recent years. Dye-sensitized solar cells are mainly composed of transparent conductive glass, nano-TiO 2 It is composed of porous film, dye, electrolyte and counter electrode. Additives can be added to the electrolyte or dye to improve battery performance. The use of additives can affect the thermodynamics, k...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D233/56C07D233/60H01G9/022H01G9/20H01M14/00H01L51/42
CPCY02E10/542Y02E10/549
Inventor 戴松元蔡墨朗潘旭
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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