Preparation method of slurry for photoanode of nano TiO2 membrane of dye-sensitized solar cell

A technology of solar cells and dye sensitization, applied in the field of solar cells, can solve the problems of complex process and high cost, and achieve the effects of abundant sources, low cost and high specific surface area

Active Publication Date: 2014-01-22
PANZHIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved in the present invention is that existing nano-TiO 2 The preparation method of the slurry required for the photoanodic film is expensive and complicated

Method used

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Examples

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preparation example Construction

[0028] Dye-sensitized solar cells nano-TiO 2 The preparation method of slurry for film photoanode comprises the following steps:

[0029] a. Heat the industrial titanium liquid at a heating rate of 0.5-10°C / min to 110-250°C for 1-10 hours, then centrifuge the hydrolysis system to remove the supernatant, and then use 0.05-0.35mol / L for the remaining part Washing with dilute acid, centrifugal sedimentation, removing the supernatant, washing repeatedly until iron ions are free, and then washing with water until the pH is 5.5-7.0 to obtain metatitanic acid;

[0030] b. Adding a degumming agent to the metatitanic acid, and degumming at 20-90°C for 4-30 hours to obtain a metatitanic acid slurry; the amount of the degumming reagent added is 0.01-0.48 g / mL industrial titanium solution.

[0031] c. Add additives to disperse the metatitanic acid slurry evenly.

[0032] Among them, the above-mentioned dye-sensitized solar cell nano-TiO 2 In the preparation method of the slurry for fil...

Embodiment 1

[0043] Mix the industrial titanium liquid and water at a volume ratio of 5:6, put them into the condensing reflux device, and heat under reflux at an oil bath temperature of 114°C for 11 hours. The hydrolysis system was centrifugally settled at a relative centrifugal force of 9509g for 6 minutes. After the supernatant was poured off, the lower layer was washed by adding 0.1mol / L dilute sulfuric acid solution, and the supernatant was removed by centrifugal sedimentation. After checking that the washing supernatant is colorless, it is washed with water until the pH is 5.5-7.0 to obtain metatitanic acid.

[0044] Add tartaric acid at 0.046g / mL industrial titanium solution, degumming at 60°C for 26 hours to obtain metatitanic acid slurry.

[0045] After the end, add 5% PVA solution by volume ratio of 5% PVA solution: metatitanic acid slurry volume=1:5, add the ethanol solution of acetylacetone with 22% metatitanic acid slurry volume (volume ratio is acetylacetone : ethanol = 1: 1...

Embodiment 2

[0050] Mix the industrial titanium liquid and water at a volume ratio of 1:1, then add it to the condensation reflux device, and heat it under reflux at an oil bath temperature of 93°C for 8 hours. The hydrolysis system was centrifugally settled at a relative centrifugal force of 9509g for 6 minutes, the supernatant was poured off, and then 0.1mol / L dilute sulfuric acid solution was added for washing, the supernatant was removed by centrifugal sedimentation, and washed repeatedly until the washing was checked with 20% ammonium thiocyanate solution After the supernatant was colorless, it was washed with water until the pH was 5.5-7.0 to obtain metatitanic acid.

[0051] Add tartaric acid at 0.01 g / mL industrial titanium solution, degumming at 80° C. for 18 hours to obtain metatitanic acid slurry.

[0052] After finishing, be 11:100 to add the PVA solution of 5% by 5%PVA solution and metatitanic acid slurry volume ratio, then add the ethanol solution of 14% acetylacetone of meta...

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Abstract

The invention belongs to the field of solar batteries, and particularly relates to a preparation method of slurry for a photoanode of a nano TiO2 membrane of a dye-sensitized solar cell. The method aims at solving the technical problem that the existing preparation method of the slurry required by a nano TiO2 photoanode membrane is higher in cost and complicated in technology. In order to solve the technical problem, the preparation method of the slurry for the photoanode of the nano TiO2 membrane of the dye-sensitized solar cell comprises the following steps of: a, heating commercial titanium liquid for hydrolysis, performing centrifugal settling on a hydrolysis system, removing supernatant, washing and obtaining metatitanic acid, b, adding a dispergator into metatitanic acid for dispergation, obtaining metatitanic acid slurry, and c, adding an additive to allow the metatitanic acid slurry to be dispersed uniformly. The method is simple to implement; performances of the slurry can be flexibly adjusted according to technological parameters; the obtained metatitanic acid slurry is good in dispersity and strong in stability; and a new method is provided for preparing the slurry for the photoanode of the nano TiO2 membrane of the dye-sensitized solar cell.

Description

technical field [0001] The invention belongs to the field of solar cells, in particular to nano-TiO for dye-sensitized solar cells 2 A method for preparing a slurry for a film photoanode. technical background [0002] The nano-semiconductor porous membrane electrode is the core part of the dye-sensitized solar cell (DSSC). It is the adsorption carrier of the dye molecule, the electron acceptor of the dye molecule in the DSSC, and also the transport layer of the electron, which is decisive for the performance of the DSSC. influences. Its raw materials generally use TiO 2 , SnO 2 , ZnO and other n-type semiconductor metal oxides with low price and wide band gap. Among them, anatase TiO 2 The band gap is 3.2eV, with excellent photoelectric performance, high optical, electrical and chemical stability, element and other characteristics, it is the best material for preparing nano-semiconductor porous membrane electrodes. At present, most of the preparation methods of nano-se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01B13/00C01G23/053
CPCY02E10/542
Inventor 蓝德均崔旭梅张雪峰陈孝娥左承阳丁虎标万书权
Owner PANZHIHUA UNIV
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