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Preparation method of MOFs derivative NiO electrochromic film

An electrochromic and thin-film technology, which is applied in the field of preparation of MOFs-derived NiO electrochromic thin films, can solve the problems affecting the material's discoloration speed and optical modulation range, affecting the electron/ion double insertion and double extraction process, etc., to achieve cycle stability Good performance, simple and convenient preparation method, fast response

Active Publication Date: 2018-06-12
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low electronic conductivity and low ionic conductivity of inorganic electrochromic materials will affect the double intercalation and double deintercalation process of electrons / ions, and then affect the color change speed and optical modulation range of the material, which have great impact on the application of inorganic electrochromic materials. to limit and challenge

Method used

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  • Preparation method of MOFs derivative NiO electrochromic film
  • Preparation method of MOFs derivative NiO electrochromic film
  • Preparation method of MOFs derivative NiO electrochromic film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Dissolve 0.083g of PTA and 0.119g of nickel chloride hexahydrate in 20mL of DMF, and add 2ml of deionized water dropwise to obtain a PTA-Ni-MOFs precursor solution.

[0029] (2) Soak the FTO glass in the DMF solution of PTA to carry out acidification, then dry, place in the liner of 50mL polytetrafluoroethylene hydrothermal kettle, conductive side is down; The PTA-Ni- that step (1) obtains The MOFs precursor solution was poured into the liner of the hydrothermal kettle, and the hydrothermal reaction was performed at 180°C for 2 hours. After cooling to room temperature, the reacted FTO glass was taken out, soaked in DMF and absolute ethanol for cleaning, and then vacuum-dried at 60°C for 24 hours. The FTO glass with evenly grown light green PTA-Ni-MOFs film attached to the surface was obtained.

[0030] (3) Put the FTO glass with PTA-Ni-MOFs film on the surface obtained in step (2) for heat treatment in a muffle furnace, and heat it up to 550°C at a heating rate of 2...

Embodiment 2

[0034] (1) Dissolve 0.017g of PTA and 0.024g of nickel chloride hexahydrate in 20mL of DMF, and add 1ml of deionized water dropwise to obtain a PTA-Ni-MOFs precursor solution.

[0035] (2) Soak the FTO glass in the DMF solution of PTA for acidification, then dry it, place it in a 50mL polytetrafluoroethylene hydrothermal kettle liner, with the conductive side facing down; the PTA-Ni- The MOFs precursor solution was poured into the liner of a hydrothermal kettle, and subjected to a hydrothermal reaction at 100°C for 6 hours. After cooling to room temperature, the reacted FTO glass was taken out, washed by soaking in DMF and absolute ethanol, and then vacuum-dried at 100°C for 12 hours. The FTO glass with evenly grown light green PTA-Ni-MOFs film attached to the surface was obtained.

[0036] (3) Put the FTO glass with PTA-Ni-MOFs film on the surface obtained in step (2) for heat treatment in a muffle furnace, and heat it up to 400°C at a heating rate of 5°C / min and keep it for ...

Embodiment 3

[0039] (1) Dissolve 0.083g of PTA and 0.119g of nickel chloride hexahydrate in 20mL of DMF, and add 2ml of deionized water dropwise to obtain a PTA-Ni-MOFs precursor solution.

[0040](2) Soak the FTO glass in the DMF solution of PTA for acidification, then dry it, place it in a 50mL polytetrafluoroethylene hydrothermal kettle liner, with the conductive side facing down; the PTA-Ni- The MOFs precursor solution was poured into the liner of a hydrothermal kettle, and subjected to a hydrothermal reaction at 120°C for 3 hours. After cooling to room temperature, the reacted FTO glass was taken out, washed by soaking in DMF and absolute ethanol, and then vacuum-dried at 80°C for 20 hours. The FTO glass with evenly grown light green PTA-Ni-MOFs film attached to the surface was obtained.

[0041] (3) Put the FTO glass with PTA-Ni-MOFs film on the surface obtained in step (2) for heat treatment in a muffle furnace, and heat up to 500°C at a heating rate of 3°C / min and keep it for 60min...

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Abstract

The invention relates to a preparation method of an MOFs derivative NiO electrochromic film. The method comprises the steps of dissolving terephthalic acid PTA and nickel salt into N,N-dimethyl formamide DMF, dropwise adding deionized water, and obtaining a PTA-Ni-MOFs precursor solution; putting pretreated FTO glass into the precursor solution, carrying out hydrothermal reaction, cooling, washing, vacuum drying, and obtaining FTO glass coated with a PTA-Ni-MOFs thin film; carrying out heat treatment, and obtaining the MOFs derivative NiO electrochromic film. The preparation method provided bythe invention is simple and convenient, and can be produced in a large scale; the obtained MOFs derivative NiO electrochromic film has a perfect porous structure and a high-efficient and stable electrochromic property, and has an important application value in the fields such as electronic display, building curtain walls and smart home.

Description

technical field [0001] The invention belongs to the technical field of inorganic electrochromic materials, in particular to a method for preparing MOFs-derived NiO electrochromic thin films. Background technique [0002] With the development of science and technology, intelligent color-changing materials have been widely used in the fields of electronic display, building energy, aerospace and smart home. According to the response to different external environmental changes, intelligent color-changing materials can be classified into: electrochromic materials, thermochromic materials, photochromic materials and so on. Electricity is a clean and controllable energy source, and it is not easily affected by the external environment, so electrochromic materials have extremely high research value and application prospects. [0003] Electrochromic materials refer to the phenomenon that the color of materials changes due to the regulation of voltage-current. Electrochromic materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
CPCC03C17/3417
Inventor 李耀刚梁浩李然王宏志张青红侯成义
Owner DONGHUA UNIV
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