Method for preparing vanadic oxide film growing along c-axis

A technology of vanadium pentoxide and oriented growth, which is applied in the field of preparing vanadium pentoxide films grown along the c-axis, can solve the problems of poor film growth orientation, complex equipment and processes, etc., and achieve high strength, simple process, and easy preparation low cost effect

Inactive Publication Date: 2010-04-07
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the shortcomings of the existing preparation method, which are complicated in equipment and process, and poor in film growth orientation, and proposes a method for preparing a vanadium pentoxide film grown in c-axis orientation with simple equipment and process

Method used

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  • Method for preparing vanadic oxide film growing along c-axis
  • Method for preparing vanadic oxide film growing along c-axis
  • Method for preparing vanadic oxide film growing along c-axis

Examples

Experimental program
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Effect test

Embodiment 1

[0024] ① Take 1.33 grams of vanadyl diacetylacetonate, put it into 40 ml of absolute ethanol, stir it magnetically for 4 hours, let it stand for 15 days to age it, and form a vanadyl diacetylacetonate sol with a concentration of 0.125 mol / L;

[0025] ②The borosilicate glass is cleaned with detergent, deionized water, absolute ethanol, and acetone in sequence, assisted by ultrasonic cleaning, and then dried with hot air, and a silicon dioxide barrier layer is pre-coated on it.

[0026] ③Immerse borosilicate glass coated with amorphous silicon dioxide in vanadyl diacetylacetonate sol, pull it out at a constant speed of 5 cm / min, and dry it in an oven at 80°C to form vanadyl diacetylacetonate Gel film, and then dip the dried substrate coated with vanadyl diacetylacetonate gel film in the vanadyl diacetylacetonate sol, pull it out at a constant speed of 5 cm / min, and put it in an oven at 80 ° C Keep it in the middle for 10-20 minutes to dry, and then pull the coating film 15 times...

Embodiment 2

[0030] The steps are as in Example 1, wherein the sol concentration of vanadyl diacetylacetonate is adjusted to 0.1 mol / L. Repeatedly pulling the coating film 15 times in this way, the thickness of the obtained thin film sample is relatively small, and the thickness of the formed film is about 100nm, but still maintains the growth characteristics along the c-axis orientation.

Embodiment 3

[0032] The steps are as in Example 1, wherein the sol concentration of vanadyl diacetylacetonate is adjusted to 0.7 mol / L. Repeatedly pulling the coating film 15 times in this way, the thickness of the formed film is about 300nm; but the film thickness is not very uniform, the crystallinity becomes better, and it grows along the c-axis orientation.

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Abstract

The invention provides a method for preparing a vanadic oxide film growing along c-axis with simple equipment and process. The method comprises the following steps: (1) preparing sol by using vanadyl acetylacetonate as a raw material; (2) forming a film on a cleaned substrate material by using the sol as coating solution and by using a pulling coating method or a spin coating method; and (3) carrying out thermal treatment in an oxygen-containing atmosphere. The method has the advantages of simple process, large-area preparation, low preparation cost and the like. The prepared vanadic oxide film growing along c-axis has single orientation, contributes to the insertion and extraction of ions and can improve the performance of the cathode of a lithium ion battery and an electrochromic device.

Description

technical field [0001] The invention relates to the technical field of chemistry and chemical engineering, in particular to a method for preparing a vanadium pentoxide film grown along a c-axis. Background technique [0002] Vanadium oxide compounds have a wide range of uses, wherein the vanadium pentoxide crystal has a layered structure, which is easy to crack along the (001) plane, thereby exposing the strongest vanadium oxygen bond inside, which is relatively active, and the oxygen atom is easy to come out and Anion vacancies are left for easy intercalation of cations. Due to this property, vanadium pentoxide (V 2 o 5 ) thin films can be used in electrochromism, electrode materials for lithium batteries, thermally activated electronic switches, and gas and humidity sensors, which have aroused great interest. In these applications, the vanadium pentoxide film is mainly used as an ion storage membrane, and its performance has a great influence on the performance of the d...

Claims

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Application Information

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IPC IPC(8): C23C20/08
Inventor 徐刚甄恩明徐雪青苗蕾
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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