Process for preparing TiO2 nanocrystal porous film electrode by low-temp. electrophoresis sedimentation

A technology of titanium dioxide and electrophoretic deposition, which is applied in electrophoretic plating, circuits, electrolytic coatings, etc., can solve problems that affect the stability and repeatability of nanocrystalline porous thin film electrodes, electrodes destroy flexible conductive materials, and flexible conductive materials are not resistant to high temperatures. , to achieve the effect of uniform and controllable deposition film thickness, fast film formation and low cost

Inactive Publication Date: 2007-01-31
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, flexible conductive materials are not resistant to high temperatures (≤150°C), and the traditional high-temperature sintering method for preparing electrodes will destroy flexible conductive materials
At the same time, the method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] (1) Weigh 0.5g TiO 2 The particles (P25) are put in 10ml n-butanol solution and mixed and stirred for 2 hours and then dispersed by ultrasonic for 30 minutes to make TiO 2 colloid.

[0032] (2) Use two pieces of fluorine-doped SnO 2 Conductive glass (FTO) (Heilongjiang Haake New Energy Co., Ltd., sheet resistance 30Ωcm -2 ) As the electrode substrate, TiO is placed in parallel on the conductive surface 2 In the colloidal solution, the distance is 1cm, and the electrophoretic deposition is 30s. Take out the glass electrode connected to the negative electrode of the power supply, and the deposition film can be seen. Rinse the adhesive liquid on the film with n-butanol solution to obtain TiO 2 Thin film electrode.

[0033] (3) The prepared TiO 2 The thin-film electrode is naturally dried and sintered at a high temperature of 450°C for 30 minutes to obtain the TiO of the present invention 2 Nanocrystalline porous film electrode.

Example Embodiment

[0034] Example 2

[0035] In addition to the TiO in step (1) 2 Except that the particle weight is changed to 0.4g, the other steps and process conditions are the same as in Example 1, to obtain the TiO of the present invention 2 Nanocrystalline porous film electrode.

Example Embodiment

[0036] Example 3

[0037] In addition to the TiO in step (1) 2 Except that the weight of the particles is changed to 0.3g, the other steps and process conditions are the same as in Example 1, to obtain the TiO of the present invention 2 Nanocrystalline porous film electrode.

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PUM

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Abstract

The invention belongs to the manufacturing technical field of dye sensibilized TiO2 nanocrystalline porous thin film electrode and photo- catalyzed electrode, especially relating to a method for preparing TiO2 nanocrystalline porous thin film electrode at low temperature by electrophoretic deposition, mixing alcohol solution containing Ti salt or not with TiO2 grains, making TiO2 colloidal solution by supersonic diffusion, depositing TiO2 colloidal solution on clean conducting substrate by electrophoretic deposition to make TiO2 thin film electrode; and preparing TiO2 nanocrystalline porous thin film electrode at low temperature by postprocessing. And the preparing method is easy to operate, saving energy sources, low-cost, fast to form film, and especially applied to low temperature preparation of flexible TiO2 nanocrystalline porous thin film electrode.

Description

technical field [0001] The invention belongs to dye-sensitized TiO 2 The technical field of manufacturing nanocrystalline porous thin film electrodes and photocatalytic electrodes, especially alcohol solutions containing titanium salts or not containing titanium salts and TiO 2 Particle mixing and ultrasonic dispersion of TiO 2 Colloidal solution, preparation of TiO at low temperature by electrophoretic deposition and post-treatment 2 A method for nanocrystalline porous thin film electrodes. Background technique [0002] Dye-sensitized TiO 2 Dye-sensitized TiO in nanocrystalline porous thin-film solar cells 2 Nanocrystalline porous thin film electrodes are responsible for adsorbing dyes, separating charges and transporting photogenerated electrons. In this battery, TiO 2 Nanocrystalline porous films have large specific surface area and high porosity. This is not only conducive to the adsorption of a large number of dye molecules, which can improve the light energy abs...

Claims

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Application Information

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IPC IPC(8): H01L31/0224H01L31/18C25D13/02
CPCY02P70/50
Inventor 林原陈朝艳周晓文李学萍肖绪瑞
Owner INST OF CHEM CHINESE ACAD OF SCI
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