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Preparation method of dye-sensitized solar cell platinum loaded silicon carbide counter electrodes

A technology for solar cells and dye sensitization, which is applied in the field of preparation of platinum-supported silicon carbide counter electrodes for dye-sensitized solar cells, can solve the problems of low activity of catalytic materials, difficulty in controlling the agglomeration of Pt nanoparticles, and high energy consumption of the preparation process. Achieve the effects of simple synthesis process, convenient large-scale production, and low energy consumption

Active Publication Date: 2013-11-27
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The biggest disadvantage of these preparation methods of Pt-loaded composite counter electrode materials is that it is difficult to control the agglomeration, size and dispersion of Pt nanoparticles, and the preparation process has high energy consumption and low catalytic material activity.

Method used

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  • Preparation method of dye-sensitized solar cell platinum loaded silicon carbide counter electrodes
  • Preparation method of dye-sensitized solar cell platinum loaded silicon carbide counter electrodes
  • Preparation method of dye-sensitized solar cell platinum loaded silicon carbide counter electrodes

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Experimental program
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Effect test

Embodiment 1

[0048] 1) Preparation of Pt-loaded silicon carbide (Pt-SiC) counter electrode material

[0049] First, 1 g of chloroplatinic acid crystalline hydrate (H 2 PtCl 6 ·H 2 O) Dissolve in 100mL isopropanol solution to prepare chloroplatinic acid alcohol solution. Subsequently, the average particle size was weighed to be 40nm, the pore size to be 30nm, and the specific surface area to be 100m 2 / g, 500mg of SiC nano raw materials with a purity higher than 99%, dissolved in 25mL analytical ethylene glycol solution, after ultrasonic mixing for 30mins. Then, take 18mL chloroplatinic acid alcohol solution and add it dropwise to 82mL SiC ethylene glycol solution, keeping the weight percentage of Pt in the solution at about 10%, that is, Pt / ((Pt-SiC)+Pt)≌10%. Finally, 1 mL of NaOH solution with a molar concentration of 1 M was ingested, added dropwise to the above mixed solution, the pH value of the solution was adjusted to 10, and ultrasonically dispersed for 1 h.

[0050] The unifor...

Embodiment 2

[0056] 1) Preparation of Pt-loaded silicon carbide (Pt-SiC) counter electrode material

[0057] First, 3 g of chloroplatinic acid crystalline hydrate (H 2 PtCl 6 ·H 2 O) Dissolve in 90mL analytical ethanol and deionized water mixed in any proportion to prepare chloroplatinic acid alcohol solution. Subsequently, the average particle size was weighed to be 50nm, the pore size to be 50nm, and the specific surface area to be 150m 2 / g, 300mg of SiC nano raw material with a purity higher than 99%, was dissolved in 20mL analytical ethylene glycol solution, after ultrasonic mixing for 10mins. Then, take 20mL of chloroplatinic acid alcohol solution and add it dropwise to 80mL of SiC in ethylene glycol solution, keeping the weight percentage of Pt in the solution at about 10%, that is, Pt / ((Pt-SiC)+Pt)≌10%. Finally, 1 mL of NaOH solution with a molar concentration of 0.5 M was ingested, added dropwise to the above mixed solution, the pH value of the solution was adjusted to 11, and...

Embodiment 3

[0064] 1) Preparation of Pt-loaded silicon carbide (Pt-SiC) counter electrode material

[0065] First, 2 g of chloroplatinic acid crystalline hydrate (H 2 PtCl 6 ·H 2 O) Dissolve in 95mL galpentyl alcohol to prepare a chloroplatinic acid alcohol solution. Subsequently, the average particle size was weighed to be 30nm, the pore size to be 50nm, and the specific surface area to be 20m 2 / g, 400mg of SiC nano raw materials with a purity higher than 99%, dissolved in 30mL analytical ethylene glycol solution, after ultrasonic mixing for 20mins. Then, take 10 mL of chloroplatinic acid alcohol solution and add it dropwise to 90 mL of SiC in ethylene glycol solution, keeping the weight percentage of Pt in the solution at about 10%, that is, Pt / ((Pt-SiC) + Pt)≌10%. Finally, 1 mL of NaOH solution with a molar concentration of 1 M was ingested, added dropwise to the above mixed solution, the pH value of the solution was adjusted to 11, and ultrasonically dispersed for 2 h.

[0066] ...

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Abstract

The invention discloses a preparation method of dye-sensitized solar cell platinum loaded silicon carbide counter electrodes. The preparation method comprises the steps of (1) preparing Pt-SiC composite counter electrode materials: respectively preparing the H2PtCl6 solution and the SiC alcoholic solution, conducting ultrasonic mixing on the H2PtCl6 solution and the SiC alcoholic solution, adjusting the pH value, conducting microwave heating after ultrasonic dispersion is carried out, conducting washing, filtering and drying, conducting heat treatment in the inert atmosphere, and obtaining the Pt-SiC composite counter electrode materials, and (2) building a Pt-SiC counter electrode thin film: washing and drying FTO conducting glass, adding the Pt-SiC composite counter electrode materials into a dispersing agent, conducting dispersing processing to obtain a counter electrode catalytic material sizing agent, coating the conducting glass with the counter electrode catalytic material sizing agent to form the Pt-SiC counter electrode thin film, and conducting heat treatment in the inert atmosphere to obtain the platinum loaded silicon carbide counter electrodes. The preparation method is low in building cost, simple in operation process, low in energy consumption, environmentally friendly and high in compatibility with the photo-anode preparation technology. The precious metal Pt electrodes can be replaced by the Pt loaded silicon carbide counter electrodes, and the Pt loaded silicon carbide counter electrodes can be applied to dye-sensitized solar cell devices.

Description

technical field [0001] The invention belongs to the technical field of green renewable clean energy, and in particular relates to a method for preparing a platinum-supported silicon carbide counter electrode of a dye-sensitized solar cell. Background technique [0002] Swiss scientist M. The third-generation dye-sensitized solar cell (DSSC), which was invented, has become the focus of research worldwide due to its low production cost, simple process, environmental friendliness, high conversion efficiency, and ease of large-area production. and hotspots. Compared with the first-generation and second-generation solar cells, the third-generation solar cells have more development and application prospects. [0003] A typical DSSC consists of transparent conductive glass (FTO or ITO), N719 dye-sensitized TiO 2 thin film, iodine pair (I 3 - / I - ) electrolyte and noble metal platinum (Pt) as the counter electrode. The main function of the Pt electrode is to collect electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/20
CPCY02E10/542
Inventor 云斯宁朱江
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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