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Method for preparing carbon counter electrode in dye sensitized solar cell

A solar cell and dye sensitization technology, which is applied in the field of optoelectronic materials and devices, can solve the problem of low catalytic activity, achieve the effects of improving catalytic activity, reducing preparation time, and improving efficiency

Active Publication Date: 2012-07-18
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the one-dimensional carbon composite prepared by this method is used as a DSSC counter electrode catalyst, the catalytic activity is not high.

Method used

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  • Method for preparing carbon counter electrode in dye sensitized solar cell
  • Method for preparing carbon counter electrode in dye sensitized solar cell
  • Method for preparing carbon counter electrode in dye sensitized solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1) Wash. Based on high-purity Ti sheet and FTO glass. For the Ti sheet, first use sandpaper to polish the surface to remove obvious impurities and polish it smoothly, then dip a cotton swab into the deionized water solution containing detergent, scrub the substrate, then rinse it with deionized water solution containing detergent, and then use Ultrasonic cleaning with deionized water, ethanol, deionized water, and acetone for 10 minutes, followed by immersion in dilute hydrochloric acid for 30 minutes to remove metal impurities, then ultrasonic cleaning with acetone for 10 minutes, and drying for later use. For FTO glass, first use a cotton swab to dip in a deionized water solution containing detergent, scrub the substrate, then rinse it with a deionized water solution containing detergent, and then use deionized water, ethanol, deionized water, and acetone to ultrasonically Wash for 10 minutes and dry for later use.

[0048] 2) Prepare the photoanode. Spin coating o...

Embodiment 2

[0055] 1) Wash. Based on carbon cloth and FTO glass. Soak the carbon cloth with acetone for about 8 hours to remove the glue. For the FTO glass, dip a cotton swab into the deionized water solution containing detergent, scrub it, and then rinse it with the deionized water solution containing detergent, and then sequentially Ultrasonic cleaning with deionized water, ethanol, deionized water, and acetone for 20 minutes, and drying for later use.

[0056] 2) Prepare the photoanode. Spin-coat 100 nm of TiO on clean FTO glass 2 dense layer, followed by sintering at 550 °C for 10 min, and then in dense TiO 2 A layer of TiO commonly used in DSSC is coated on the 2 emulsion, followed by sintering at 500 °C for 20 min to form TiO 2 Porous layer, repeated above coating and sintering process can control TiO 2 The thickness of the porous layer is about 12 μm. The sintered photoanode is immersed in a 0.3 mmol / L N719 dye ethanol solution at 60 ° C for more than 15 hours, and then taken...

Embodiment 3

[0062] 1) Wash. Based on stainless steel sheet and FTO glass. For stainless steel sheets, first use sandpaper to polish the surface to remove obvious impurities and polish it smoothly, then use a cotton swab to dip in deionized water solution containing detergent, scrub the substrate, then rinse with deionized water solution containing detergent, and then use Ultrasonic cleaning with deionized water, ethanol, deionized water, and acetone for 10 minutes, and drying for later use. For FTO glass, first use a cotton swab to dip in a deionized water solution containing detergent, scrub the substrate, then rinse it with a deionized water solution containing detergent, and then use deionized water, ethanol, deionized water, and acetone to ultrasonically Wash for 10 minutes and dry for later use.

[0063] 2) Prepare the photoanode. Spin-coat 100 nm of TiO on clean FTO glass 2 dense layer, followed by sintering at 550 °C for 10 min, and then in dense TiO 2 A layer of TiO commonly ...

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Abstract

The invention discloses a method for preparing a carbon counter electrode in a dye sensitized solar cell. The method comprises the following steps of: preparing a substrate; adding sodium dodecyl sulfate into a transition metal salt solution; coating the prepared solution on the substrate; naturally drying the substrate, and re-coating the solution, wherein the thickness of a dried coating layer is 200 nm to 2 mu m; putting the substrate in a flame of an alcohol lamp; and heating the substrate for 10 seconds to 10 minutes. The method has the advantages that by adding an appropriate amount of sodium dodecyl sulfate into the transition metal salt solution, a one-dimensional composite material has a highly-conductive three-dimensional micro-nano porous structure and is high in catalytic activity and low in series resistance, so the efficiency of the cell is improved. Compared with the conventional cell which employs platinum as a catalyst, the prepared cell has the same energy conversion efficiency and a wide application prospect.

Description

[0001] technical field [0002] The invention relates to a method for preparing a carbon counter electrode in a dye-sensitized solar cell, and belongs to the field of optoelectronic materials and devices. technical background [0003] Dye Sensitized Solar Cell (DSSC) efficiency has exceeded 12% in 2011. Since it came out in 1991, it has been one of the hot spots in the research field because of its low production cost, simple and easy production process, and easy repetition. Although the efficiency and stability need to be improved, this cell is still considered to be one of the most promising photovoltaic devices for commercial applications. DSSC is a sandwich structure consisting of a photoanode, a counter electrode, and an electrolyte filled in between. The photoanode is generally composed of conductive glass and dye-sensitized nanoporous oxide film, and the nanoporous oxide film is generally porous titanium dioxide; the counter electrode is composed of a catalyst depos...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/20H01M14/00H01L51/48
CPCY02E10/542Y02E10/549Y02P70/50
Inventor 方国家曾玮陶洪王静
Owner WUHAN UNIV
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