Preparation method of C/Sb<2>S<3> composite thin-film counter electrode material

A composite thin film and electrode material technology, applied in circuits, capacitors, photovoltaic power generation, etc., can solve the problems of restricting large-scale production and application, complex preparation process, poor electrical conductivity and catalytic performance of the film, and achieve excellent electrocatalytic performance, Effect of high electrocatalytic performance and excellent counter electrode performance

Active Publication Date: 2016-04-13
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Antimony metal sulfide Sb 2 S 3 It has shown good electrocatalytic performance and application prospects in the counter electrode (see J.Phys.Chem.C magazine, 2013, volume 117, page 10285), but the poor conductivity of the film limits its catalytic performance. performance, the complex preparation process also limits its large-scale production and application

Method used

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  • Preparation method of C/Sb&lt;2&gt;S&lt;3&gt; composite thin-film counter electrode material
  • Preparation method of C/Sb&lt;2&gt;S&lt;3&gt; composite thin-film counter electrode material
  • Preparation method of C/Sb&lt;2&gt;S&lt;3&gt; composite thin-film counter electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Carbon nanoparticles and sodium carboxymethylcellulose were dispersed in water to obtain a carbon nanoparticle sol, and the sol was spin-coated onto fluorine-doped SnO 2 transparent conductive glass surface, after 60~100 o C is dried in vacuum to obtain a carbon nanoparticle film;

[0022] Add 1mMSbCl in DMF step by step 3 and 2mMTu, uniform and continuous stirring for a period of time to obtain the Sb-Tu precursor solution, the solution was spin-coated to the surface of the C nanoparticle film, and then put it into the N 2 In the atmosphere furnace at a heating rate of 2~8 o C / min, 350~450 o Annealing treatment at C for 0.5 hours, waiting for natural cooling to obtain C / Sb 2 S 3 Composite film.

[0023] figure 1 It is the photo and SEM photo of the prepared C nanoparticle film. figure 2 It is a photo of the Sb-Tu precursor solution prepared in this example. It can be seen from the picture that the solution has good uniformity and transparency, and can be store...

Embodiment 2

[0024] Embodiment 2 Carbon nanoparticles and carboxymethyl cellulose sodium carboxylate are dispersed in water to obtain carbon nanoparticle sol, and the sol is spin-coated to the SnO2 doped with fluorine on the transparent conductive glass surface, after 60 to 100 o C is dried in vacuum to obtain a carbon nanoparticle film;

[0025] Add 1-2mMSbCl gradually in DMF 3 and 2-3mMTu, evenly and continuously stirred for a period of time to obtain the Sb-Tu precursor solution, the solution was spin-coated to the surface of the C nanoparticle film, and then put it into the N 2 In an atmosphere furnace at a heating rate of 5 o C / min, 400 o Annealing treatment at C for 0.5 hours, waiting for natural cooling to obtain C / Sb 2 S 3 Composite film.

Embodiment 3

[0026] Example 3 Carbon nanoparticles and sodium carboxymethyl cellulose are dispersed in water to obtain a carbon nanoparticle sol, and the sol is spin-coated to the SnO doped with fluorine on the transparent conductive glass surface, after 60 to 100 o C is dried in vacuum to obtain a carbon nanoparticle film;

[0027] Add 1mMSbCl in DMF step by step 3 and 2mMTu, evenly and continuously stirred for a period of time to obtain the Sb-Tu precursor solution, its solvent was evaporated to dryness in the air, and then placed in an atmosphere furnace at 400 o Annealing treatment at C for 0.5~1 hour to obtain Sb 2 S 3 Powder. Put 100mg powder in a corundum boat, cover the corundum boat with a C nanoparticle film (conductive side facing down), and heat up at a rate of 8 under the protection of the atmosphere. o C / min, 350~550 o Evaporate at constant temperature at C for 30 minutes, wait for natural cooling, and you can get C / Sb 2 S 3 Composite film.

[0028] Figure 5 and 6 ...

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Abstract

The invention provides a preparation method of a C / Sb<2>S<3> composite thin-film counter electrode material. The method comprises the following steps: gradually adding a certain amount of antimony trichloride and thiourea to dimethyl formamide, and uniformly and lastingly stirring the mixture for a period of time to obtain an Sb-Tu precursor solution; carrying out spin-coating on the surface of a carbon nanoparticle thin-film with the solution, and putting the carbon nanoparticle thin-film into an atmosphere furnace for annealing treatment to obtain the C / Sb<2>S<3> composite thin-film; on the other hand, evaporating a solvent of the Sb-Tu precursor solution to dryness in air and carrying out annealing to obtain Sb<2>S<3> powder; and putting a certain amount of powder into a corundum boat, covering the corundum boat with the carbon nanoparticle thin-film, and carrying out constant-temperature thermal evaporation under atmosphere protection for 10 minutes to an hour, so as to obtain the C / Sb<2>S<3> composite thin-film.

Description

technical field [0001] The invention relates to a C / Sb 2 S 3 The invention relates to a method for preparing a composite thin film counter electrode material, belonging to the field of dye-sensitized solar cell counter electrode preparation. Background technique [0002] Dye-sensitized solar cells (DSSCs) have been developed since 1991 by Swiss scientist M. A new type of photovoltaic power generation device developed since the breakthrough (see Nature magazine, 1991, volume 353, p. 737). This new type of solar cell is environmentally friendly and has a simple preparation process, especially in terms of low cost. When the photoelectric conversion efficiency of the battery reaches 5%, it has application value. [0003] As an important part of dye-sensitized solar cells, the counter electrode is mainly used to collect photogenerated electrons from the external circuit and realize the triiodide (I 3 - ) reduction, so conductivity and electrocatalytic activity are the key ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/042
CPCH01G9/2022Y02E10/542
Inventor 孙盼盼张鸣艾长智吴智鑫孙小华黄妞
Owner CHINA THREE GORGES UNIV
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