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A kind of molybdenum oxide electrochromic nano film and preparation method thereof

An electrochromic and nano-thin film technology, applied in the direction of coating, etc., can solve the problems of weak support, large film forming roughness, and difficulty in achieving complete uniformity of dispersion, and achieve uniform appearance, good repeatability, low cost effect

Active Publication Date: 2019-11-12
SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of spin coating method is simple, but because the dispersion is difficult to achieve complete uniformity, the roughness of the film formation is relatively large, and the combination with the support is not firm.

Method used

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  • A kind of molybdenum oxide electrochromic nano film and preparation method thereof
  • A kind of molybdenum oxide electrochromic nano film and preparation method thereof
  • A kind of molybdenum oxide electrochromic nano film and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] 1) 1.2 g of molybdenum powder, 8 ml of 30% hydrogen peroxide and 32 ml of deionized water were mixed and dissolved, stirred magnetically in an ice-water bath, and aged for 6 h to form a uniform transparent yellow solution.

[0034] 2) Add 1 g NaNO to the solution obtained in 1) 3 and 2 ml polyethylene glycol PEG, then transfer the precursor solution to a polytetrafluoroethylene reactor core with a capacity of 50 mL, and then put a piece of FTO conductive glass with a size of 2.5*5 cm in the reactor core, The conductive side was facing down, reacted at 180 °C for 12 h, and cooled naturally to room temperature after the reaction.

[0035] 3) Take out the FTO conductive glass in 2) the reaction kettle, soak it in anhydrous ethanol solution for 20 minutes, dry it at room temperature for 8 hours, and put the obtained film in a muffle furnace at 450 °C for 1 hour. The film is dark blue The color becomes white, and the molybdenum oxide film with the properties to be tested is...

Embodiment 2

[0038] 1) 1.2 g of molybdenum powder, 8 ml of 30% hydrogen peroxide and 32 ml of deionized water were mixed and dissolved, stirred magnetically in an ice-water bath, and aged for 5 h to form a uniform transparent yellow solution.

[0039] 2) Add 1 g sodium citrate and 1 ml polyethylene glycol PEG to the solution obtained in 1), and then transfer the precursor solution to a polytetrafluoroethylene reactor core with a capacity of 50 mL, and then transfer it to the reactor core Put a piece of FTO conductive glass with a size of 2.5*5 cm, with the conductive side facing down, react at 180 °C for 6 h, and cool to room temperature naturally after the reaction.

[0040]3) Take out the FTO conductive glass in 2) the reaction kettle, soak it in anhydrous ethanol solution for 15 minutes, dry it at room temperature for 6 hours, and put the obtained film in a muffle furnace at 450 °C for 1 hour. The film is dark blue The color becomes white, and the molybdenum oxide thin film with the ele...

Embodiment 3

[0044] 1) Mix and dissolve 1.2 g of molybdenum powder, 8 ml of 30% hydrogen peroxide and 32 ml of deionized water, magnetically stir in an ice-water bath, and age for 10 hours to form a uniform transparent yellow solution.

[0045] 2) Add 1 g NaNO to the solution obtained in 1) 3 and 2 ml of n-butanol, then transfer the precursor solution to a polytetrafluoroethylene reactor core with a capacity of 50 mL, and then put a piece of FTO conductive glass with a size of 2.5*5 cm in the reactor core, in which the conductive Face down, react at 120 °C for 12 h, and cool to room temperature naturally after the reaction.

[0046] 3) Take out the FTO conductive glass in 2) the reaction kettle, soak it in anhydrous ethanol solution for 18 minutes, dry it at room temperature for 5 hours, and put the obtained film in a muffle furnace at 400°C for 1 hour. The film is dark blue The color becomes white, and the molybdenum oxide film with the properties to be tested is obtained.

[0047] The ...

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Abstract

The invention discloses a molybdenum oxide electrochromic nano thin film and a preparation method of the molybdenum oxide electrochromic nano thin film. The thin film is of a nano sheet-shaped structure array with the thickness of 100nm to 150nm, a nano block with a laminar structure, a short nano-ribbon structure array or a nanosphere with the diameter of 70 to 100nm and a rough surface. The preparation method of the molybdenum oxide electrochromic nano thin film comprises the following steps: firstly, mixing and dissolving elemental molybdenum, hydrogen peroxide and de-ionized water; magnetically stirring in an ice water bath; after ageing, adding an end capping agent and an adhesive to obtain a precursor; adding the precursor into a reaction kettle and obliquely putting conductive glass, with the conductive surface down, into the reaction kettle and carrying out hydrothermal reaction; after reacting, taking out a glass substrate; finally, immersing in absolute ethyl alcohol; putting the thin film into a muffle furnace and calcining to obtain the molybdenum oxide electrochromic nano thin film. A molybdenum oxide thin film material prepared by the invention has a uniform shape and can be applied to electrochromic devices and related fields.

Description

technical field [0001] The invention relates to a molybdenum oxide electrochromic nano film and a preparation method thereof, belonging to the technical field of inorganic nano materials. Background technique [0002] Nano-molybdenum oxide has unique properties in electrochemistry, photocatalysis, etc., and is widely used in many functional materials such as electrochromism, gas sensors, solar cells, and supercapacitors. It is a multifunctional and promising Inorganic transition metal oxide materials, and the morphology and structure of nano-molybdenum oxide and the preparation method of nano-film have a great influence on its functional application. Among them, the two-dimensional nano-molybdenum oxide thin film is a more application-oriented material form. Molybdenum oxide thin films have good electrochromic properties, but the preparation of molybdenum oxide thin films with excellent performance and simple methods has always been a research hotspot. [0003] However, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/34
CPCC03C17/3417C03C2218/111C03C2218/32
Inventor 王金敏左月朱俊宇
Owner SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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