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Quasi-solid electrolyte for dye-sensitized solar cell and preparation method thereof

A technology of solar cells and dye sensitization, which is applied in the field of quasi-solid electrolyte and its preparation, can solve the problems of limited photoelectric conversion efficiency of quasi-solid electrolyte, and achieve the effect of improving the photoelectric conversion rate

Inactive Publication Date: 2017-05-10
HUBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the prior art, the photoelectric conversion efficiency of quasi-solid electrolytes is limited

Method used

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  • Quasi-solid electrolyte for dye-sensitized solar cell and preparation method thereof
  • Quasi-solid electrolyte for dye-sensitized solar cell and preparation method thereof
  • Quasi-solid electrolyte for dye-sensitized solar cell and preparation method thereof

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preparation example Construction

[0040] The preparation method of above-mentioned quasi-solid electrolyte of the present invention, comprises the following steps:

[0041] An electrospun polymer fiber membrane is provided, the electrospun polymer fiber membrane is electrospun from a polymer solution;

[0042] immersing the electrospun polymer fiber membrane in a dopamine solution to obtain a dopamine-loaded electrospun polymer fiber membrane;

[0043] And, impregnating the dopamine-loaded electrospun polymer fiber membrane in an ionic liquid electrolyte.

[0044] The aforementioned dopamine solution refers to a solution obtained by dissolving dopamine in a liquid solvent. Here, the chemical name of dopamine is 4-(2-ethylamino)benzene-1,2-diol, referred to as "DA", and its CAS number is 51-61-6.

[0045] The above-mentioned dopamine solution may preferably be a Tris-hydrochloric acid solution of dopamine. Here, the Tris-hydrochloric acid solution refers to a mixed solution of tris(hydroxymethyl)aminomethane...

Embodiment 1

[0054] Step 1, preparing an electrospun PVDF fiber membrane. A PVDF polymer solution was prepared by dissolving polyvinylidene fluoride (PVDF) in a mixed solution of acetone and N,N-dimethylformamide (8:2 by weight). It was stirred in a stirrer for 24 hours to completely dissolve and sonicated for 30 minutes to form a polymer solution, which was introduced into an electrospinning device and spun. The spinning time was controlled for 2 hours to prepare a PVDF fiber membrane with a thickness of 40 microns.

[0055] Step 2: Soak the prepared PVDF fiber membrane with a thickness of 40 microns in dopamine (DA) Tris-hydrochloric acid solution to obtain DPA@PVDF fiber membrane.

[0056] Step 3: Soak the above-mentioned DPA@PVDF fiber membrane in the iodine-containing ionic liquid electrolyte (composed of 0.3mol / L iodine simple substance, BMII ionic liquid and solvent) until completely soaked to form a quasi-solid electrolyte.

Embodiment 2

[0058] Step 1, preparing an electrospun PVDF fiber membrane. A PVDF polymer solution was prepared by dissolving polyvinylidene fluoride (PVDF) in a mixed solution of acetone and N,N-dimethylformamide (weight ratio 6:4). It was stirred in a stirrer for 24 hours to completely dissolve and sonicated for 30 minutes to form a polymer solution, which was introduced into an electrospinning device and spun. The spinning time was controlled for 4 hours to prepare a PVDF fiber membrane with a thickness of 60 microns.

[0059] Step 2: Soak the prepared PVDF fiber membrane with a thickness of 60 microns in dopamine (DA) Tris-hydrochloric acid solution to obtain DPA@PVDF fiber membrane.

[0060] Step 3: Soak the above-mentioned DPA@PVDF fiber membrane in the iodine-containing ionic liquid electrolyte (composed of 0.7mol / L iodine simple substance, BMII ionic liquid and solvent) until completely soaked to form a quasi-solid electrolyte.

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Abstract

The invention discloses a quasi-solid electrolyte for a dye-sensitized solar cell and a preparation method thereof. The quasi-solid electrolyte for the dye-sensitized solar cell includes a three-dimensional netted electrospinning polymer fibrous membrane, and dopamine and ionic liquid loaded on the three-dimensional netted electrospinning polymer fibrous membrane; the photoelectric conversion rate is obviously improved when the modification effect of the dopamine is used as the dye-sensitized solar cell.

Description

technical field [0001] The invention relates to the technical field of electrolyte materials, in particular to a quasi-solid electrolyte for dye-sensitized solar cells and a preparation method thereof. Background technique [0002] Dye-sensitized solar cells have the advantages of low price, environmental friendliness, and simple fabrication, and become the representative of the third generation of solar cells. Dye-sensitized solar cells are composed of three parts: dye-sensitized photoanode, electrolyte and counter electrode, in which the electrolyte plays an important role in the process of dye reduction regeneration or hole transport. [0003] Quasi-solid electrolyte is a gel-state electrolyte between liquid electrolyte and all-solid state. It can maintain the high mobility of liquid electrolyte to the greatest extent, and at the same time has the long-term stability of solid electrolyte, so it is widely used in the preparation of stable Efficient quasi-solid-state dye-s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/028
CPCY02E10/542H01G9/20H01G9/2009H01G9/2013
Inventor 程凡王世敏文胜欧颖李婷胡阳
Owner HUBEI UNIV