Solid electrolyte for solar cell based on ionic crystal

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

Inactive Publication Date: 2013-10-09
SUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 MIm][Br]) synthesis: referring to literature (Synthesis 2008, 2008, 2551-2560; J.Mater.Chem.2011, 21, 7326-7330), 15mmol dibromoethane and 20mmol K 2 CO 3 were added to 10mmol In acetone (20mL) solution, N 2 Under protection, react at 70°C for 12h. Filtration, and removal of the solvent resulted in a precipitate, which was 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, react in an ice-water bath for 1 h, and then react 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 respectively. 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]) synthesis: with reference to literature (Synthesis 2008, 2008, 2551-2560; J.Mater.Chem.2011, 21, 7326-7330), 15mmol dibromoethane and 20mmol K 2 CO 3 were added to 10mmol In acetone (20mL) solution, N 2 Under protection, react at 70°C for 12h. Filtration, and removal of the solvent resulted in a precipitate, which was 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 ethylimidazole, react in an ice-water bath for 1 h, and then react 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 respectively. 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: with reference to literature (Synthesis 2008, 2008, 2551-2560; J.Mater.Chem.2011, 21, 7326-7330), 15mmol dibromoethane and 20mmol K 2 CO 3 were added to 10mmol In acetone (20mL) solution, N 2 Under protection, react at 70°C for 12h. Filtration, and removal of the solvent resulted in a precipitate, which was 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 butylimidazole, react in an ice-water bath for 1 h, and then react 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 respectively. 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 dye-sensitized solar cells, 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, electrolyte mainly plays the role of transporting redox couples, and its performance directly affects the efficiency of solar cells. [0003] Common electrolytes for dye-sensitized solar cells are liquid, quasi-solid, solid and other 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 electrolytes. This type of liquid electrolyte has disadvantages such as easy leakage, volatilization, difficult packaging, high toxicity, and poor stability [Adv. Quasi-solid electrolytes mostly contain organic solvents with high boiling points such as PC and EC, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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