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Method for preparing nanocrystal ternary titanium dioxide porous electrode by auxiliary crystallization in electrophoretic deposition high-voltage electric field

A titanium dioxide, high-voltage electric field technology, applied in electrophoretic plating, electrical components, circuits, etc., can solve problems such as unfavorable light scattering, cannot improve the utilization rate of incident light, etc., achieves good repeatability, facilitates large-area production, Stable performance

Inactive Publication Date: 2010-03-10
HEILONGJIANG UNIV
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  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is to solve the problem that tens of nanometers of titanium dioxide particles are not conducive to light scattering and cannot improve the utilization rate of incident light. A kind of electrophoretic deposition high voltage electric field assisted crystallization is provided to prepare nanocrystalline ternary titanium dioxide porous electrode Methods

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  • Method for preparing nanocrystal ternary titanium dioxide porous electrode by auxiliary crystallization in electrophoretic deposition high-voltage electric field
  • Method for preparing nanocrystal ternary titanium dioxide porous electrode by auxiliary crystallization in electrophoretic deposition high-voltage electric field
  • Method for preparing nanocrystal ternary titanium dioxide porous electrode by auxiliary crystallization in electrophoretic deposition high-voltage electric field

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specific Embodiment approach 1

[0012] Specific Embodiment 1: In this embodiment, the method for preparing nanocrystalline ternary titanium dioxide porous electrode by electrophoretic deposition with high-voltage electric field-assisted crystallization is as follows: 1. Hydrolyze tetrabutyl titanate under ultrasonic conditions to synthesize mesoporous titanium dioxide sol; 2. Use hydrothermal Prepare titanium dioxide colloid G2 by sol-gel method, prepare titanium dioxide colloid G3 by sol-gel method; three, mix P25 titanium dioxide and acetic anhydride and stir for 0.5 hour, add titanium dioxide colloid G3 and maleic acid mass concentration and be 50% acetone solution, then in Under the condition of ultrasonic frequency of 45kHz, sonicate for 15 minutes to 30 minutes, then add titanium dioxide colloid G2 and polyethylene glycol ethanol solution with a mass concentration of polyethylene glycol of 2% to 6%, stir for 0.5 hour to 1 hour, and then add Water ethanol, ultrasonic 15 minutes~30 minutes under the condi...

specific Embodiment approach 2

[0014] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the preparation method of step one mesoporous titania sol is as follows: 1. Mix concentrated hydrochloric acid, secondary deionized water and absolute ethanol to prepare solution A, concentrated hydrochloric acid The volume ratio with the secondary deionized water is 1~9:30, and the volume ratio between the secondary deionized water and absolute ethanol is 0.2~1:1; 2. Tetrabutyl titanate, absolute ethanol and acetylacetone Mix to prepare solution B, the volume ratio of tetrabutyl titanate to absolute ethanol is 4-9:6, the volume ratio of absolute ethanol to acetylacetone is 8-36:3; A is added dropwise into solution B with an ultrasonic frequency of 45kHz. After the addition, ultrasonication is performed for 1 to 2 hours under the condition of an ultrasonic frequency of 45kHz to obtain a light yellow transparent mesoporous titanium dioxide sol; the mass of concentrated hydr...

specific Embodiment approach 3

[0015] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the method for preparing titanium dioxide colloid G2 by hydrothermal method in step two is as follows: tetrabutyl titanate, acetic anhydride and absolute ethanol are mixed to obtain a mixed solution, The mass ratio of tetrabutyl titanate to acetic anhydride is 4~8:3, and the mass ratio of the volume of absolute ethanol to acetic anhydride is 10~25:3; : a volume ratio of 1 to obtain an aqueous ethanol solution; three, the aqueous ethanol solution is added dropwise to the mixed solution obtained in step one, and after the dropwise addition is completed for 0.5 hour to 1 hour, a light yellow transparent sol is obtained; four, the light yellow transparent The sol was heated in an autoclave at a temperature of 160°C to 200°C for 12 to 20 hours to obtain a milky white precipitate, then dissolved the milky white precipitate with absolute ethanol, and ultrasonicated at an...

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Abstract

The invention relates to a method for preparing nanocrystal ternary titanium dioxide porous electrode by auxiliary crystallization in electrophoretic deposition high-voltage electric field, relating to a method for preparing an electrode and solving the problem that dozens of nano titanium dioxide particles are not beneficial to scattering of light and can not improve the utilization ratio of incident light. The method comprises the following steps of: leading conducting glass coated with mesoporous titanium dioxide and another conducting glass to be in parallel and opposite in non-electrifiedternary titanium dioxide size for electrophoretic deposition so as to obtain the titanium dioxide electrode, then leading the titanium dioxide electrode and a conducting basal body to be parallel andopposite for calcining under the condition of applied electric field, thus obtaining the nanocrystal ternary titanium dioxide porous electrode. The space structure of the ternary titanium dioxide layer has high specific surface area same as the titanium dioxide particles, is beneficial to absorbing dye, simultaneously increases scattering of incident light, is beneficial to improving utilizationratio of the incident light and further improves photoelectric conversion efficiency of the battery.

Description

technical field [0001] The invention belongs to the technical field of manufacturing titanium dioxide nanocrystalline porous electrodes used in dye-sensitized solar cells or as photocatalytic electrodes, and particularly relates to the application of electrophoretic deposition technology to non-conductive titanium dioxide colloidal film formation. When titanium dioxide electrodes are subjected to high temperature treatment , a method for preparing a titanium dioxide porous electrode by introducing a high-voltage electric field-assisted crystallization of titanium dioxide. Background technique [0002] In dye-sensitized titanium dioxide nanocrystalline porous thin film solar cells, porous titanium dioxide as semiconductor nanocrystalline particles has a high specific surface area, which is not only conducive to the adsorption of a large number of dye molecules, but also to the penetration of electrolytes, thus greatly improving the battery life. Photoelectric conversion effic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/02H01L31/0224
Inventor 牛海军罗培辉郑刚
Owner HEILONGJIANG UNIV
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