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Solid electrolyte for solar cell based on ionic crystal

A solid electrolyte and solar cell technology, applied in the field of dye-sensitized solar cells, can solve problems such as unsatisfactory cell conversion efficiency, and achieve the effects of increasing light scattering, high photoelectric conversion efficiency, and wide applicable temperature range

Inactive Publication Date: 2012-07-18
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the conversion efficiency of the battery (up to 4.7%) is still not ideal

Method used

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  • Solid electrolyte for solar cell based on ionic crystal
  • Solid electrolyte for solar cell based on ionic crystal
  • Solid electrolyte for solar cell based on ionic crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] See figure 1 As shown, ([C 2 Synthesis of MIm][Br]): refer to the literature (Synthesis 2008, 2008, 2551-2560; J. Mater. Chem. 2011, 21, 7326-7330), 15mmol of dibromoethane and 20mmol of K 2 CO 3 Add to 10mmol Acetone (20mL) solution, N 2 Under protection, react at 70°C for 12h. Filter and remove the solvent to obtain a precipitate, which is recrystallized from petroleum ether to obtain 1 HNMR(400MHz, CDCl 3 ): 7.67 (m, 4H), 7.54 (d, 2H), 7.02 (d, 2H), 4.35 (t, 2H), 3.67 (t, 2H). Take 25mmol KOH and add to 10mmol In a chloroform (20 mL) solution mixed with 12 mmol of methylimidazole, the reaction was carried out in an ice-water bath for 1 hour, and then at 45°C for 48 hours. The solvent was removed by rotary evaporation, and a white solid was obtained after washing three times with ether and ethyl acetate. 1 HNMR(300MHz, CDCl 3 ): 10.50 (s, 1H), 7.63 (m, 4H), 7.51 (d, 2H), 7.28 (d, 2H), 7.01 (d, 2H), 4.94 (m, 2H), 4.49 (m, 2H) , 4.08 (s, 3H).

Embodiment 2

[0027] See figure 1 As shown, ([C 2 EIm][Br]): refer to the literature (Synthesis 2008, 2008, 2551-2560; J. Mater. Chem. 2011, 21, 7326-7330), 15mmol of dibromoethane and 20mmol K 2 CO 3 Add to 10mmol Acetone (20mL) solution, N 2 Under protection, react at 70°C for 12h. Filter and remove the solvent to obtain a precipitate, which is recrystallized from petroleum ether to obtain 1 HNMR(400MHz, CDCl 3 ): 7.67 (m, 4H), 7.54 (d, 2H), 7.02 (d, 2H), 4.35 (t, 2H), 3.67 (t, 2H). Take 25mmol KOH and add to 10mmol In a chloroform (20 mL) solution mixed with 12 mmol of ethyl imidazole, react for 1 h in an ice-water bath, and then at 45° C. for 48 h. The solvent was removed by rotary evaporation, and a white solid was obtained after washing three times with ether and ethyl acetate. 1 HNMR(300MHz, CDCl 3 ): 10.49(s, 1H), 7.64(m, 4H), 7.51(d, 2H), 7.30(d, 2H), 7.00(d, 2H), 4.38(t, 2H), 3.66(s, 2H) , 2.64(t, 2H), 1.02(s, 3H).

Embodiment 3

[0029] See figure 1 As shown, ([C 2 BIm][Br]) synthesis: refer to literature (Synthesis 2008, 2008, 2551-2560; J. Mater. Chem. 2011, 21, 7326-7330), 15mmol of dibromoethane and 20mmol K 2 CO 3 Add to 10mmol Acetone (20mL) solution, N 2 Under protection, react at 70°C for 12h. Filter and remove the solvent to obtain a precipitate, which is recrystallized from petroleum ether to obtain 1 HNMR(400MHz, CDCl 3 ): 7.67 (m, 4H), 7.54 (d, 2H), 7.02 (d, 2H), 4.35 (t, 2H), 3.67 (t, 2H). Take 25mmol KOH and add to 10mmol In a chloroform (20 mL) solution mixed with 12 mmol of butyl imidazole, react for 1 hour in an ice-water bath, and then react at 45°C for 48 hours. The solvent was removed by rotary evaporation, and a white solid was obtained after washing three times with ether and ethyl acetate. 1 HNMR(300MHz, CDCl 3 ): 10.47 (s, 1H), 7.64 (m, 4H), 7.50 (d, 2H), 7.39 (d, 2H), 6.97 (d, 2H), 4.48 (t, 2H), 4.09 (s, 3H) , 2.18(t, 2H), 1.92(s, 4H).

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Abstract

The invention belongs to a dye-sensitized solar cell and particularly discloses a solid electrolyte for a solar cell based on an ionic crystal. The solid electrolyte includes the following components: 50-89 percent by weight of non-polymerized ionic liquid, 10-40 percent by weight of ionic crystal and 1-10 percent by weight of iodine simple substances, wherein the non-polymerized ionic liquid is selected from one or a mixture of more than two (comprising two types) of compounds expressed by a chemical structural formula; in the formula, p is equal to 1-6; and a chemical structural general formula of the ionic crystal is shown in the description. According to the solid electrolyte disclosed by the invention, a crystal base element is introduced in the solid electrolyte, so that the light scattering phenomenon can be increased and further the efficiency of the battery is increased; and finally, the obtained solar cell is high in photoelectric conversion efficiency, wide in applicable temperature and capable of adapting to different light intensities.

Description

Technical field [0001] The invention belongs to a dye-sensitized solar cell, and mainly relates to an electrolyte material and a preparation method thereof. Background technique [0002] As the core component of solar cells, especially dye-sensitized solar cells, electrolytes mainly play a role in transmitting redox couples, and their performance directly affects the efficiency of solar cells. [0003] Common electrolytes for dye-sensitized solar cells come in liquid, quasi-solid, and solid forms [Dalton.Trans., 2008, 2655-2666; Adv.Funct.Mater., 2009, 19, 1-16; Adv.Funct .Mater., 2007, 17, 2645-2652]. Among them, liquid electrolytes mostly use organic solvents such as acetonitrile and methoxypropionitrile as the electrolyte. Such liquid electrolytes have shortcomings such as easy leakage, volatile, difficult to package, high toxicity, and poor stability [Adv.Funct.Mater., 2007, 17, 2645-2652; Electrochimica Acta, 2006, 51, 4243-4249]. Quasi-solid electrolytes mostly contain hig...

Claims

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Application Information

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IPC IPC(8): H01G9/025H01G9/028H01G9/20H01M14/00H01L51/44
CPCY02E10/542Y02E10/549
Inventor 严锋赵杰曹岑慧子
Owner SUZHOU UNIV
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