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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 of manual film coating is easy to cause uneven film thickness, and the film thickness is uncontrollable in a large range, thus affecting the TiO 2 Stability and repeatability of performance of nanocrystalline porous thin film electrodes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Weigh 0.5g TiO 2 Particles (P25) were put in 10ml n-butanol solution, mixed and stirred for 2 hours, then ultrasonically dispersed for 30 minutes to make TiO 2 colloid.

[0032] (2) Using two fluorine-doped SnO 2 Conductive glass (FTO) (Heilongjiang Hake New Energy Co., Ltd., square resistance 30Ωcm -2 ) as the electrode substrate, the conductive surface is placed in parallel with TiO 2 In the colloid solution, the distance is 1cm, and the electrophoretic deposition is 30s. Take out the glass electrode connected to the negative pole of the power supply, and it can be seen that the deposited film is formed. Rinse off the adhesion solution on the film with n-butanol solution to obtain TiO 2 thin film electrodes.

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

Embodiment 2

[0035] Except TiO in step (1) 2 Particle weight is changed into except 0.4g, and other steps and processing condition are identical with embodiment 1, obtain TiO of the present invention 2 Nanocrystalline porous thin film electrodes.

Embodiment 3

[0037] Except TiO in step (1) 2 Particle weight is changed into except 0.3g, and other steps and processing condition are identical with embodiment 1, obtain TiO of the present invention 2 Nanocrystalline porous thin film electrodes.

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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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