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Making method of NiO nano-crystalline electrochromic film

An electrochromic and nanocrystalline technology, applied in the field of functional materials, can solve the problems of difficult film formation and shape control, and achieve good color changing effect, easy operation and good stability

Active Publication Date: 2016-02-03
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally, the main methods for preparing NiO electrochromic thin films are: hydrothermal method, sol-gel method, magnetron sputtering method, chemical bath deposition method, etc. membrane difficulty

Method used

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  • Making method of NiO nano-crystalline electrochromic film
  • Making method of NiO nano-crystalline electrochromic film
  • Making method of NiO nano-crystalline electrochromic film

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 1. Measure 25ml of oleylamine and pour it into a three-necked flask, heat it to 180℃ and keep it for half an hour; weigh 1mmol of nickel nitrate and dissolve it in 5ml of methanol, and add 1ml of oleic acid after it is completely dissolved.

[0026] 2. Inject the above-prepared methanol solution into oleylamine at 180°C. The injecting process should be fast. Raise the temperature to 300°C for one hour; then cool the solution to room temperature, add 50ml acetone to precipitate the product, and centrifuge (10,000 revolutions per minute, 10 minutes) separation and drying to obtain NiO nanocrystalline powder.

[0027] 3. Take 20mg of NiO nanocrystalline powder and place it in 10ml of n-hexane, ultrasonically disperse for 0.5 hours and then fully stir to obtain NiO nanocrystalline ink, the stirring time is 2h.

[0028] 4. Wash the ITO conductive glass ultrasonically with ionized water, acetone and ethanol successively, the ultrasonic washing time is 1h each. After the washed ITO ...

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Abstract

The invention relates to a making method of a NiO nano-crystalline electrochromic film, and belongs to the technical field of functional materials. The method comprises the following steps: preparing NiO nano-crystals through an injection technology, adding a proper amount of n-hexane, carrying out ultrasonic dispersion, and fully stirring to obtain stable ink; and making the NiO nano-crystalline electrochromic film through a Czochralski technology. The ink prepared in the invention is stable, can be used in large-area production of the NiO electrochromic film, provides a new idea for development of green and environmentally-friendly low-cost and high-chromic performance NiO electrochromic film technology, and can promote industrial rapid development of NiO electrochromic film materials and intelligent windows.

Description

Technical field [0001] The invention relates to a method for preparing a NiO nanocrystalline electrochromic film, which belongs to the technical field of functional materials. Background technique [0002] Electrochromism refers to the stable and reversible changes in the optical properties (such as transmission, etc.) of the material under the action of an external electric field or current, and a reversible change in transparency and color in appearance. Electrochromic materials have a wide range of applications in the fields of building materials and the automobile industry. For example, smart windows made of electrochromic materials can be used in buildings to control the change in the transmittance of electrochromic materials by applying voltage or current. Significantly reduce the energy consumed by residential temperature control, and play an important role in energy-saving building materials; another example is the rearview mirror of a car, which can intelligently adjust ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23
Inventor 刘晶冰张欣郑义汪浩孙德龙张永哲严辉朱满康
Owner BEIJING UNIV OF TECH
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