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Tin-doped nickel oxide-tin dioxide composite nanocrystalline film and preparation method thereof

A technology of tin dioxide and nickel oxide, applied in the coating and other directions, can solve the problems of affecting the visible light transmittance of the faded nickel oxide film, difficult to obtain transparent nickel oxide materials, and low electrochromic performance of the nickel oxide film, etc. Electrochromic properties, enhancing electronic conductivity, solving the effect of low optical modulation amplitude

Inactive Publication Date: 2021-02-12
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of NiO x Contains more Ni in 3+ , making NiO x The thin film has a strong absorption of visible light, and it is difficult to obtain a nickel oxide material with good transparency. This kind of Ni 3+ Residue and low transparency will directly affect the visible light transmittance of the faded nickel oxide film, resulting in low electrochromic performance of the nickel oxide film, which is embodied in low optical modulation amplitude, short cycle life, and low coloring efficiency.

Method used

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  • Tin-doped nickel oxide-tin dioxide composite nanocrystalline film and preparation method thereof
  • Tin-doped nickel oxide-tin dioxide composite nanocrystalline film and preparation method thereof
  • Tin-doped nickel oxide-tin dioxide composite nanocrystalline film and preparation method thereof

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preparation example Construction

[0031] The present invention also provides a method for preparing a tin-doped nickel oxide-tin dioxide composite nanocrystalline film, which is characterized in that the specific steps are as follows:

[0032] Step 1, preparing composite sol C containing Sn-Ni elements

[0033] Step 1.1, preparing Ni-containing sol A: the preparation process is as follows: nickel acetate is added to anhydrous methanol, fully stirred at room temperature until clarified, then an appropriate amount of acrylic acid is added, and the stirring is continued for 2 hours to obtain dark green clear sol A;

[0034] Step 1.2, preparation of Sn-containing sol B: the preparation process is to mix tin tetrachloride and acetylacetone, and stir at 45°C to 60°C for 15 minutes, then add acetic anhydride to it, and stir at 45°C for 15 minutes Minutes, cooled to room temperature, finally added an appropriate amount of ethanol, continued to stir for 20 minutes to obtain a clear sol B;

[0035] In step 1.3, mix sol...

Embodiment 1

[0049] A tin-doped nickel oxide-tin dioxide composite nanocrystalline electrochromic film, which has the following structural features: the average grain size of tin-doped nickel oxide is 60 nanometers, the average grain size of tin dioxide is 5 nanometers, and the film thickness to 300 nm.

[0050] The preparation method of the composite film with the above structural characteristics, the concrete steps are as follows:

[0051] First, a composite sol containing Ni and Sn elements is prepared. The process is as follows:

[0052] Mix 4.604 g of nickel acetate with 30 ml of anhydrous methanol, stir well at room temperature until clear, then add 4 ml of acrylic acid, and continue stirring for 2 hours to obtain dark green clear sol A.

[0053] 1.622 grams of tin tetrachloride was mixed with 3.113 grams of acetylacetone, and stirred at 45°C for 15 minutes, then 0.698 grams of acetic anhydride was added thereto, and stirred at 45°C for 15 minutes, cooled to room temperature, and f...

Embodiment 2

[0061] A tin-doped nickel oxide-tin dioxide composite nanocrystalline electrochromic film, which has the following structural features: the average grain size of tin-doped nickel oxide is 50 nanometers, the average grain size of tin dioxide is 8 nanometers, and the film thickness for 350 nm.

[0062] The preparation method of the composite film with the above structural characteristics, the concrete steps are as follows:

[0063] First, a composite sol containing Ni and Sn elements is prepared. The process is as follows:

[0064] Mix 4.604 g of nickel acetate with 30 ml of anhydrous methanol, stir well at room temperature until clear, then add 4 ml of acrylic acid, and continue stirring for 2 hours to obtain dark green clear sol A.

[0065] 1.816 grams of tin tetrachloride was mixed with 3.487 grams of acetylacetone, and stirred at 48°C for 15 minutes, then 0.783 grams of acetic anhydride was added thereto, and stirred at 45°C for 15 minutes, cooled to room temperature, and ...

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Abstract

The invention discloses a Sn-doped NiO-SnO2 composite nanocrystalline film. The Sn-doped NiO-SnO2 composite nanocrystalline film is characterized by being an electrochromic film composed of Sn<4+> doped NiO nanocrystals and SnO2 nanocrystals. The film can improve transmittance of a faded NiOx film, and the optical modulation amplitude of the film is increased. A preparation method of the film comprises the following steps: 1, preparing composite sol C containing Sn-Ni elements; 2, preparing a gel film by pulling: the gel film is prepared from the sol containing Sn-Ni elements on FTO conductiveglass by soaking and pulling, and a gel film substrate prepared by pulling is dried at 100-150 DEG C for 10 minutes, taken out and air cooled to room temperature; 3, placing the gel film substrate instep 2 in a muffle furnace for heat treatment, repeating steps 2 and 3 to obtain a film with certain thickness, taking out the film and air cooling the film to room temperature to obtain the film.

Description

technical field [0001] The invention belongs to the technical field of electrochromic film preparation, and in particular relates to a tin-doped nickel oxide-tin dioxide composite nanocrystalline film; the invention also relates to a preparation method of the tin-doped nickel oxide-tin dioxide composite nanocrystalline film . Background technique [0002] Nickel oxide is one of the most widely studied anodic electrochromic materials. It is a common P-type semiconductor with a band gap of 3.6-3.7eV at room temperature and poor electronic conductivity. Crystalline nickel oxide belongs to the close-packed face-centered cubic crystal structure of NaCl, and generally contains a certain amount of Ni inside. 2+ Vacancies, in order to balance the positive and negative charges in the crystal, some Ni often appear in nickel oxide 3+ , so, the normal nickel oxide material is actually a kind of Ni 2+ , also contains Ni 3+ NiO x . Because of NiO x Contains more Ni in 3+ , making...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/34
CPCC03C17/3417C03C2217/24C03C2217/241C03C2217/70C03C2218/113
Inventor 任洋方彤赵高扬周晓歌
Owner XIAN UNIV OF TECH
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