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Preparation method for counter electrode material of dye-sensitized solar cell

A technology of solar cells and electrode materials, applied in photosensitive equipment, electrolytic capacitors, circuits, etc., can solve problems affecting applications, limited reserves, and high cost of Pt electrodes, and achieve the effects of improving utilization, low cost, and reducing electron transfer resistance

Inactive Publication Date: 2017-12-01
张娟
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Problems solved by technology

[0003] Among the counter electrode materials, the noble metal Pt is the most widely used due to its excellent catalytic performance, high electrical conductivity and good chemical stability. However, the high cost and limited reserves of Pt counter electrode seriously affect its application. Inexpensive, abundant reserves, and high catalytic activity counter electrode materials are very important

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0022] A preparation method of a counter electrode material for dye-sensitized solar cells includes the following specific steps:

[0023] (1) Polyaniline / polyacrylonitrile composite nanofibers:

[0024] Weigh 18 parts by weight of polyaniline and dissolve it in the mixed solution of acetone and N,N-dimethylformamide, stir evenly for 60 minutes, and then weigh 52 parts of polyacrylonitrile and dissolve in the above-mentioned mixed solution of polyaniline. , Stir uniformly for 16 hours with a magnetic stirrer to prepare a polyaniline / polyacrylonitrile electrospinning solution, let it stand for 4 hours to remove bubbles, then transfer it to a syringe, and use a syringe pump for electrostatic spinning to obtain polyaniline / polypropylene Nitrile composite nanofibers;

[0025] (2) Carbonization treatment:

[0026] Put the above composite nanofibers in a reactor, heat up to 250°C at a rate of 2°C / min, hold for 60 minutes, perform pre-oxidation treatment, and then heat up to 850°C at a rate...

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PUM

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Abstract

The invention discloses a preparation method for counter electrode material of a dye-sensitized solar cell. According to the method, polyaniline / polyacrylonitrile composite nanofibers are prepared by using an electrospinning technique, and N-doped carbon nanofibers which have the advantages of large draw ratio and low cost are acquired after carbonization treatment, specific surface area of the carbon nanofibers is improved by reducing diameters of the carbon nanofibers; in addition, conductivity and stability of the composite material can be increased by introducing nitrogen atoms, and the nitrogen atoms can be used as the substrate of the composite material, so that more active sites can be provided for redox reaction of electrolyte under the catalysis of cobaltosic sulfide, electron transfer resistance is reduced, and thus energy conversion efficiency of the cell is improved.

Description

Technical field [0001] The invention relates to the field of composite electrode materials, in particular to a method for preparing a counter electrode material for dye-sensitized solar cells. Background technique [0002] As a third-generation solar cell, dye-sensitized solar cells have many advantages, such as environmental friendliness, strong plasticity, low cost, and high energy conversion efficiency, so they have attracted the attention of scientific researchers. A typical dye-sensitized solar cell is composed of a photoanode that absorbs dyes, a counter electrode, and an electrolyte containing a redox pair. Among them, as an important part of the dye-sensitized solar cell, the counter electrode collects electrons from the external circuit and catalyzes oxidation The effect of reduced electricity on recycling, therefore, the performance of the counter electrode material greatly affects the photoelectric performance of the dye-sensitized solar cell. [0003] Among the counter...

Claims

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Application Information

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IPC IPC(8): H01G9/20
CPCY02E10/542H01G9/2022
Inventor 张娟
Owner 张娟
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