Nickel oxide nano electrochromism film and preparing method thereof
An electrochromic and nickel oxide technology, which is applied in the direction of chemical instruments and methods, luminescent materials, etc., can solve the problems of many control steps, complicated and complex preparation process of nickel oxide electrochromic film, and achieve good compactness and stability Good performance and good uniformity
Inactive Publication Date: 2005-12-28
HEFEI INST OF INTELLIGENT MACHINERY CHINESE ACAD OF SCI
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Problems solved by technology
However, the traditional formula for preparing nickel oxide sol is relatively complicated, which makes the preparation process of nickel oxide electrochromic thin film also very complicated, and the reaction needs to be controlled.
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[0027] (1), the preparation of nickel sol
[0028] 1. Mix 48ml of absolute ethanol and 12ml of butanol to obtain an organic solvent, and add 1.2g of NiCl under stirring 2 Reflux for half an hour when the temperature is raised to 76° C., add 1.2 g of distilled water, and continue to reflux for 1 hour to obtain nickel sol.
[0029] 2. Take 40ml absolute ethanol and 20ml amyl alcohol and mix to obtain an organic solvent, add 1.8g Ni(NO 3 ) 2 Reflux for half an hour when the temperature is raised to 80° C., add 0.36 g of citric acid and 1.8 g of distilled water, and continue to reflux for 1.5 hours to obtain nickel sol.
[0030] 3. Mix 35ml of absolute ethanol and 25ml of hexanol to obtain an organic solvent, add 2.4g of NiSO under stirring 4 Reflux for half an hour when the temperature is raised to 82°C, add 0.48g of glutaric acid and 2.4g of distilled water, and continue to reflux for 2 hours to obtain nickel sol.
[0031] (two), the preparation of nickel oxide thin film
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Abstract
A nickel oxide nanometer electrochromic thin film and its preparation method, first prepare nickel sol by solution-gel method, then soak ITO glass flakes in the solution, use a film extractor to pull to form a film, dry and roast , annealing, and cooling to obtain a nickel oxide nanometer electrochromic film. The preparation of the sol is to dissolve the inorganic nickel salt in a mixed organic solvent mainly composed of absolute ethanol, reflux at 78-82°C for half an hour, then add water or add an organic acid at the same time to continue reflux to obtain the nickel sol. The formula of the invention is simple, the film is uniform and dense, the average particle size of the crystal grains is between 30-50mm, the light transmittance can be changed in the range of 7.9-85%, can be repeated thousands of times, the performance is stable, suitable for industrialization, and can be processed Large area electrochromic film.
Description
1. Technical field [0001] The invention relates to a color-changing thin film attached to a device and a preparation method thereof, in particular to a nickel oxide electrochromic thin film and a preparation method thereof. 2. Background technology [0002] There are many ways to prepare electrochromic thin films of nickel, including anodic oxidation, electrochemical deposition, electron beam evaporation, sputtering, high temperature direct oxidation and so on. However, these methods require large-scale equipment, the preparation process is complicated, and the film-forming area is limited by the equipment, so they are not suitable for large-scale preparation. [0003] At present, most of nickel oxide nano-electrochromic thin films are prepared by sol-gel method by hydrolysis of nickel alkoxide. However, the traditional formulations for preparing nickel oxide sol are relatively complicated, which makes the preparation process of nickel oxide electrochromic thin film also ve...
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IPC IPC(8): C09K11/00C09K11/60
Inventor 刘锦淮孟凡利王连超孙宇峰黄行九皮宗新
Owner HEFEI INST OF INTELLIGENT MACHINERY CHINESE ACAD OF SCI