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Curing time-controllable solid-state electrolyte and preparation method thereof

A solid electrolyte and curing time technology, applied in electrolytic capacitors, circuits, capacitors, etc., can solve the problems of uncontrollable curing time, heating, and inconvenient assembly of dye-sensitized solar cells, and achieve the effect of improving photoelectric conversion efficiency

Inactive Publication Date: 2018-09-28
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some polymer solid electrolytes need to be heated during the formation process, and the curing time is uncontrollable, which brings inconvenience to the assembly of dye-sensitized solar cells.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The above-mentioned preparation method of a solid electrolyte with controllable curing time comprises the steps of:

[0030] A, iodized salt, iodine and additive are dissolved with organic solvent, make the I of iodized salt - The molar concentration is 0.1-1 mol / L, the I of iodine 3 - The molar concentration is 0.01-0.1 mol / liter, the concentration of the additive is 0.1-1.0 mol / liter, and its organic solvent is 1,4-butyrolactone, N-methylpyrrolidone, ethylene carbonate, propylene carbonate, acetonitrile, One or a combination of two or more of 3-methoxypropionitrile, dimethyl carbonate or diethyl carbonate, after dissolving to obtain a liquid electrolyte;

[0031] B. Dehydrate the polyol used at 110°C-120°C and vacuum pressure of 0.13KPa for about 2 hours. When the temperature is lowered to 70°C to 80°C, add a certain proportion of liquid electrolyte, stir and mix evenly, add the measured polyisocyanate dropwise, and continue to stir and mix evenly. The mass ratio ...

Embodiment 1

[0044] Dissolve 75g of sodium iodide, 12.69g of iodine, 3.96g of pyridine, 6.76g of 4-tert-butylpyridine with 500mL of 1-methyl-2-pyrrolidone to obtain a liquid electrolyte, and its I of sodium iodide - The molar concentration is 0.5 mol / L, the I of iodine 3 - The molar concentration of 4-tert-butylpyridine is 0.05 mole / liter, the molar concentration of pyridine is 0.5 mole / liter, and the molar concentration of 4-tert-butylpyridine is 0.1 mole / liter; the polyethylene glycol (molecular weight is 10000) of weighing 20g is placed in the flask , at 110°C to 120°C, under a vacuum pressure of 0.13KPa, dehydrate for about 2 hours. When the temperature is lowered to 70°C to 80°C, nitrogen gas is introduced, 200g of the prepared liquid electrolyte is added, stirred and mixed evenly, 3.5g of toluene diisocyanate (TDI) is added dropwise, and stirred and mixed evenly, to obtain a polyurethane solid electrolyte precursor solution, which is flow state. Will be in 5×10 -4 mol L -1 Bipyr...

Embodiment 2

[0046] Dissolve 66.83g of lithium iodide, 12.68g of iodine, and 0.79g of pyridine in 500mL of 1,4-butyrolactone to obtain a liquid electrolyte. The I of lithium iodide - The molar concentration is 0.5 mol / L, the I of iodine 3 - The molar concentration of pyridine is 0.05 mol / liter, and the molar concentration of pyridine is 0.1 mol / liter; The polyethylene glycol (molecular weight is 4000) 10.0g, hydroxyl-terminated propylene oxide-dimethylsiloxane-epoxy 4g of propane block copolymer (molecular weight: 6000) was dehydrated for about 2 hours at 120°C and vacuum pressure of 0.13KPa. When the temperature was lowered to 80°C, nitrogen gas was introduced, 180g of the prepared liquid electrolyte was added, 8.7g of toluene diisocyanate TDI was added dropwise, and the stirring and mixing was continued to obtain the polyurethane solid electrolyte precursor solution, which was in a flowing state. Will be in 5×10 -4 mol L -1 Bipyridyl ruthenium dye RuL 2 (NCS) 2 : Nanocrystalline po...

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Abstract

The invention discloses a curing time-controllable solid-state electrolyte and a preparation method thereof. The curing time-controllable solid-state electrolyte comprises a polyurethane prepolymer, aliquid-state electrolyte and an additive, wherein the polyurethane prepolymer is prepared by addition polymerization reaction of isocyanate and dihydric or polyhydric alcohol, the liquid-state electrolyte comprises iodate, iodine and an organic solvent, the additive is an amine, pyridine or imidazole nitrogen-containing compound, and the mass ratio of the polyurethane prepolymer and the liquid-state electrolyte is 1:(1-10). The pyridine or imidazole compound is added into the polyurethane prepolymer capable of in-situ polymerization, on one hand, the photoelectric conversion efficiency of a battery can be improved; and on the other hand, the solid-state electrolyte is suitable for a dye-sensitized solar cell, large-scale package of the battery is facilitated, probability is provided for industrialization of the dye-sensitized solar cell, and the solid-state electrolyte has good application prospect in the field of the dye-sensitized solar cell.

Description

technical field [0001] The invention relates to a solid electrolyte for dye-sensitized solar cells, in particular to a solid electrolyte with controllable curing time and a preparation method thereof. Background technique [0002] 1991M The team developed a new type of dye-sensitized nanocrystalline solar cell, referred to as DSSC, which opened up a new path for the development of solar cells ("A low-cost, high-efficiency solar cell based ondye-sensitized colloidal TiO 2 films”. Brain O’Regan and Michael Nature,1991,353:737-740. Colloidal TiO based on dye sensitization 2 thin-film low-cost, high-efficiency solar cells, Nature, 1991). [0003] Dye-sensitized solar cells have become a strong competitor of traditional silicon solar cells due to their simple fabrication method, low cost, and high conversion efficiency. They have attracted extensive attention and research, and good progress has been made. However, the liquid electrolyte it uses has problems such as poor sta...

Claims

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Application Information

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IPC IPC(8): H01G9/20
CPCH01G9/2009Y02E10/542
Inventor 戴玉华赵彤韩刚梁慧蕾翟建涛
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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