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Electrolyte for dye sensitized solar cells

A technology for solar cells and dye sensitization, applied in the field of electrolytes for dye-sensitized solar cells, can solve the problems affecting the stability and commercial application of dye-sensitized solar cells, reducing the open circuit voltage of cells, expensive LiI, etc. The effect of application prospect, improving stability and reducing cost

Inactive Publication Date: 2012-07-04
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, LiI is unstable, easy to absorb moisture and be oxidized by air
Second, lithium ions reduce the open circuit voltage of the battery
Again, high-purity LiI is expensive
These will affect the stability and commercial application of dye-sensitized solar cells

Method used

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  • Electrolyte for dye sensitized solar cells
  • Electrolyte for dye sensitized solar cells
  • Electrolyte for dye sensitized solar cells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, as a comparison.

[0027] Organic iodide: diiodide-1,1'-methylene-bis(3-methylimidazole), 0.25M

[0028] Elemental iodine: 0.05M

[0029] Solvent: Dimethylsulfoxide

[0030] Mix the above ingredients evenly.

Embodiment 2

[0032] Organic iodide: diiodide-1,1'-methylene-bis(3-methylimidazole), 0.3M

[0033] Elemental iodine: 0.03M

[0034] Additive: tetra-tert-butylpyridine, 0.5M

[0035] Solvent: Dimethylsulfoxide

[0036] Mix the above ingredients evenly.

Embodiment 3

[0038] Organic iodide: diiodide-1,1'-methylene-bis(3-methylimidazole), 0.3M

[0039] Elemental iodine: 0.05M

[0040] Additives: (iso)guanidine thiocyanate, 0.1M, tetra-tert-butylpyridine, 0.5M

[0041] Solvent: dimethylsulfoxide / acetonitrile, vol / vol=3 / 2

[0042] Mix the above ingredients evenly.

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Abstract

The invention discloses an electrolyte for dye sensitized solar cells. The electrolyte comprises organic iodide, elementary iodine, additive and solvent, wherein the organic iodide is prepared through reaction of 1-alkyl substituted imidazole and 2-alkyl iodides. The electrolyte has stable physical and chemical properties and low cost and can be used for replacing lithium iodide which is high in price and bad in stability. By using the electrolyte provided, the stability of the dye sensitized solar cells can be improved, the cost is reduced, and benefit is brought to the industrialized application of the cells.

Description

technical field [0001] The invention relates to an electrolyte for a dye-sensitized solar cell, belonging to the technical field of new energy sources. technical background [0002] The main source of energy for human beings today is fossil fuels. However, fossil fuels are non-renewable and have limited reserves. Once they are exhausted, mankind will face a serious energy crisis. On the other hand, the environmental problems brought about by the combustion of fossil fuels have also attracted people's attention day by day. Therefore, seeking and developing clean and renewable energy has become the consensus of people. [0003] Solar energy is an important and inexhaustible clean energy, the energy projected by the sun to the earth every year is as high as 1.38*10 24 Joules, this value is 10,000 times the current human needs. Imagine if 0.1% of the earth's surface was covered with solar cells with 10% efficiency to meet current energy needs. [0004] Since the dye-sensiti...

Claims

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Application Information

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IPC IPC(8): H01G9/022H01G9/028H01G9/20H01M14/00H01L51/46
CPCY02E10/542Y02E10/549Y02P70/50
Inventor 赵兴中台启东白思航
Owner WUHAN UNIV
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