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Silver-doped vanadium pentoxide nanowire, preparing method of silver-doped vanadium pentoxide nanowire and preparing method of electrochromic device

A vanadium pentoxide nano- and silver-doped technology is applied in the preparation of electrochromic devices, and its preparation, in the field of silver-doped vanadium pentoxide nanowires, can solve the problems of easy collapse of layered structures, poor electrical conductivity, Problems affecting electrochromic performance, etc.

Active Publication Date: 2016-03-09
HAINAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The vanadium pentoxide nanowires prepared by the above method have small aspect ratio, poor electrical conductivity, and easy collapse of the layered structure, which seriously affects its electrochromic performance.

Method used

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  • Silver-doped vanadium pentoxide nanowire, preparing method of silver-doped vanadium pentoxide nanowire and preparing method of electrochromic device
  • Silver-doped vanadium pentoxide nanowire, preparing method of silver-doped vanadium pentoxide nanowire and preparing method of electrochromic device
  • Silver-doped vanadium pentoxide nanowire, preparing method of silver-doped vanadium pentoxide nanowire and preparing method of electrochromic device

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preparation example Construction

[0033] The embodiment of the present invention discloses a method for preparing silver-doped vanadium pentoxide nanowires, comprising the following steps:

[0034] Mix vanadium source, template agent, water, nitric acid and silver nitrate to obtain a mixture precursor;

[0035] The mixture precursor is subjected to hydrothermal reaction to obtain silver-doped vanadium pentoxide nanowires.

[0036] This application improves the conductivity and layer spacing of vanadium pentoxide by doping silver in layered vanadium pentoxide, and prepares silver-doped vanadium pentoxide nanowires with high aspect ratio, which improves the electrical conductivity of the material. Chromogenic properties.

[0037] According to the present invention, vanadium source, template agent, water, nitric acid and silver nitrate are firstly mixed to obtain a mixture precursor. In order to mix the raw materials uniformly and prevent the raw materials from reacting prematurely, the preparation of the mixtu...

Embodiment 1

[0056] Dissolve 0.3g of ammonium metavanadate and 0.5g of P123 in 30ml of distilled water, add 2ml of 1mol / L nitric acid, stir at room temperature for 7h, add 0.1g of silver nitrate to the above solution, and continue stirring for 1h. Transfer the obtained precursor solution to a 50ml crystallization kettle, and conduct a hydrothermal reaction at 120°C for 24 hours. After the crystallization kettle is naturally cooled to room temperature, the product is taken out, filtered and washed with distilled water and ethanol. Repeat three times until P123 is completely washed. Finally, the washed product was dried overnight at 80°C to obtain silver-doped vanadium pentoxide nanowires.

[0057] figure 1 The SEM photo of the silver-doped vanadium pentoxide nanowires prepared in this embodiment, figure 2 The TEM images of the silver-doped vanadium pentoxide nanowires and the silver-doped vanadium pentoxide nanowires prepared in Example 1, the lower right embedded image is its HRTEM image...

Embodiment 2

[0060] According to the scheme of Example 1, 0.3g of ammonium metavanadate and 0.5g of P123 were dissolved in 30ml of distilled water, 2ml of 1mol / L nitric acid was added, stirred at room temperature for 7h, 0.2g of silver nitrate was added to the above solution, and stirred for 1h; the obtained The precursor solution was transferred to a 50ml crystallization kettle, and hydrothermally reacted at 120°C for 24 hours. After the crystallization kettle was naturally cooled to room temperature, the product was taken out, filtered and washed with distilled water and ethanol. Repeated three times until P123 was completely washed, and finally washed The product was dried overnight at 80 °C to obtain silver-doped vanadium pentoxide nanowires.

[0061] 0.25 g of silver-doped vanadium pentoxide nanowires prepared by the above scheme were dispersed in 20 ml of ethanol, stirred vigorously at room temperature until the solution volume was concentrated to 5 ml, and the resulting suspension wa...

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Abstract

The invention provides a preparing method of a silver-doped vanadium pentoxide nanowire. The method comprises the following steps that a vanadium source, a template agent, water, nitric acid and silver nitrate are mixed to obtain a mixture precursor; and the mixture precursor is subject to the hydrothermal reaction to obtain the silver-doped vanadium pentoxide nanowire. The invention further provides a preparing method of an electrochromic device. The method comprises the following steps that A, a solution of the silver-doped vanadium pentoxide nanowire is plated on the surface of conductive glass, and conductive glass with the surface plated with a silver-doped vanadium pentoxide nanowire film is obtained; and B, the conductive glass obtained in the step A and the other conductive glass are bonded through a sealing strip, an electrolyte is injected into the position between the two pieces of conductive glass, and the electrochromic device is obtained. Through silver doping, the conductive performance and the interlayer spacing of vanadium pentoxide are improved through silver doping, the silver-doped vanadium pentoxide nanowire with the high length-width ratio is formed, and therefore the electrochromic performance of the material is improved.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic materials, in particular to a silver-doped vanadium pentoxide nanowire, a preparation method thereof and a preparation method of an electrochromic device. Background technique [0002] Electrochromism is that under the action of an external electric field, ions or electrons in the material are extracted or injected, so that the oxidation state of the electrochromic material changes reversibly, so that the optical properties of the material such as reflectivity, light transmittance and color change accordingly. reversible change. Electrochromic materials are divided into organic electrochromic materials and inorganic electrochromic materials. Inorganic electrochromic materials have been favored by researchers for a long time due to their advantages of good chemical stability and simple preparation process. At present, the inorganic electrochromic materials that have been studied m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24G02F1/155
Inventor 熊春荣姜宏董云冰马艳平
Owner HAINAN UNIVERSITY
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