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Iodine-doping titanium dioxide microsphere electrode and manufacturing method thereof

A titanium dioxide and iodine doping technology, which is applied in the manufacture of electrolytic capacitors, circuits, capacitors, etc., to achieve the effects of controllable size, improved transmission efficiency, and improved conductivity

Active Publication Date: 2017-04-26
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] TiO 2 There are many studies on doping, but most of them are used in photocatalysis, about I-doped TiO 2 Effects on DSSC performance are rarely reported

Method used

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  • Iodine-doping titanium dioxide microsphere electrode and manufacturing method thereof
  • Iodine-doping titanium dioxide microsphere electrode and manufacturing method thereof
  • Iodine-doping titanium dioxide microsphere electrode and manufacturing method thereof

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preparation example Construction

[0019] I-doped TiO 2 The preparation method of microsphere comprises the steps:

[0020] Step 1: Use isopropyl titanate as the titanium source and dodecylamine as the pelletizing agent for titanium dioxide. Under ice bath conditions, take 360ml of absolute ethanol, add 8g of dodecylamine and 8g of isopropyl titanate and mix well As a precursor solution, stir for 10-15 minutes.

[0021] Step 2, using iodine as the doping source, take a certain amount of iodine dissolved in 120ml of deionized water and mix it evenly as the reaction solution, add the precursor solution drop by drop to the reaction solution, and stir vigorously, after the dropwise addition, react 12 Hours.

[0022] Step 3, take 360ml nano TiO 2 The colloid was added into a 500ml reaction kettle, sealed, and the temperature was controlled at 160-250°C for hydrothermal growth for 12 hours. TiO out of the reactor 2 Centrifuge and wash 3 times with absolute ethanol to replace the water in the colloid and become T...

Embodiment 1

[0026] A kind of undoped TiO 2 The preparation method of microsphere, its technological process is as follows:

[0027] Step 1: Use isopropyl titanate as the titanium source and dodecylamine as the pelletizing agent for titanium dioxide. Under ice bath conditions, take 360ml of absolute ethanol, add 8g of dodecylamine and 8g of isopropyl titanate and mix well As a precursor solution, stir for 10-15 minutes.

[0028] Step 2, take 120ml of deionized water as the reaction solution, add the precursor solution drop by drop into the reaction solution, and stir vigorously, and react for 12 hours after the dropwise addition.

[0029] Step 3, take 360ml nano TiO 2 The colloid was added into a 500ml reactor, sealed and controlled at a temperature of 200°C for hydrothermal growth for 12 hours. TiO out of the reactor 2 Centrifuge and wash 3 times with absolute ethanol to replace the water in the colloid and become TiO in the alcohol system. 2 colloid. Then prepare TiO 2 For the slu...

Embodiment 2

[0032] An iodine-doped TiO 2 The preparation method of microsphere photoanode, its technological process is as follows:

[0033]Step 1: Use isopropyl titanate as the titanium source and dodecylamine as the pelletizing agent for titanium dioxide. Under ice bath conditions, take 360ml of absolute ethanol, add 8g of dodecylamine and 8g of isopropyl titanate and mix well As a precursor solution, stir for 10-15 minutes.

[0034] Step 2: Use iodine as the doping source, dissolve 0.2g of iodine into 120ml of deionized water and mix it evenly as the reaction solution, add the precursor solution drop by drop to the reaction solution, and stir vigorously, after the dropwise addition, react 12 Hours.

[0035] Step 3, take 360ml nano TiO 2 The colloid was added into a 500ml reaction kettle, sealed, and the temperature was controlled at 250°C for hydrothermal growth for 12 hours. TiO out of the reactor 2 Centrifuge and wash 3 times with absolute ethanol to replace the water in the col...

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Abstract

The invention provides an iodine-doping titanium dioxide microsphere electrode and a manufacturing method thereof. The method is characterized by under a room temperature, mixing and stirring absolute ethyl alcohol, lauryl amine and isopropyl titanate and taking as a precursor solution; and then, using iodine and deionized water as a reaction solution, dropping and adding the precursor solution in the reaction solution, rapidly stirring and carrying out reaction for 12 hours; and finally, after centrifugal washing, taking a sediment and adding into the absolute ethyl alcohol and the deionized water, stirring uniformly, taking a TiO2 reaction colloid and adding into a reaction kettle, sealing, controlling a temperature in a range of 160-250 DEG C, carrying out reaction for 12hs, and then cooling to the room temperature, centrifuging, washing and adding ethyecellulose so as to acquire TiO2 slurry, making a TiO2 electrode through screen printing, sintering for 0.5h at 500DEG C, and then acquiring the iodine-doping titanium dioxide microsphere electrode. The electrode acquired in the invention possesses a large specific surface area, an effective electronic transmission path and high conductivity. And the electrode is used in a quasi-solid dye-sensitized solar cell and photoelectric conversion efficiency of the cell can reach 6.38%.

Description

technical field [0001] The invention relates to the technical field of titanium dioxide electrode material preparation, in particular to an iodine-doped TiO 2 Microsphere electrode and its preparation method. Background technique [0002] Dye-sensitized solar cells (DSSCs) are considered to have good application prospects due to their low manufacturing cost and good energy conversion efficiency. So far, DSSCs have not entered the market, mainly because the liquid electrolyte solvent that is the hallmark of DSSCs is easy to leak. and against the erosion of electrodes, the best solution is to use solid or quasi-solid electrolytes instead of liquid electrolytes, but solid or quasi-solid nanocrystalline DSSCs still exhibit lower energy conversion efficiencies compared to liquid electrolytes. Therefore, how to improve the performance of DSSCs composed of solid or quasi-solid electrolytes is still a big problem. electrons in TiO 2 The transport mechanism in the electrode mainly...

Claims

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Application Information

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IPC IPC(8): H01G9/20
CPCY02E10/542H01G9/2031H01G9/0029H01G9/2036
Inventor 向鹏谭新玉李辉肖婷姜礼华
Owner CHINA THREE GORGES UNIV
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