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A kind of vanadium pentoxide nanobelt and its normal temperature synthesis method and application

A vanadium pentoxide nano, room temperature synthesis technology, applied in the field of nano materials and electrochemical energy storage, can solve the problems of high cost, difficult to large-scale production, etc., and achieve convenient operation, easy mass production, and excellent rate performance. Effect

Inactive Publication Date: 2016-05-11
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, existing V 2 o 5 Without exception, the preparation of nanopowders, especially nanowires and nanobelts, requires a large amount of external energy such as high temperature and high pressure, microwave assistance, and ultrasonic treatment. This is because V 2 o 5 The formation of crystal nuclei and the growth of crystals need to overcome considerable surface energy
This also causes V 2 o 5 The high cost in the synthesis process of nanopowder makes it difficult to achieve large-scale production

Method used

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  • A kind of vanadium pentoxide nanobelt and its normal temperature synthesis method and application
  • A kind of vanadium pentoxide nanobelt and its normal temperature synthesis method and application
  • A kind of vanadium pentoxide nanobelt and its normal temperature synthesis method and application

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Effect test

Embodiment 1

[0029] Accurately weigh 1.8g (0.01mol) vanadium pentoxide, add the vanadium pentoxide taken into 100mL deionized water, and stir at room temperature, then accurately weigh 5.8g ammonium dihydrogen phosphate (0.05mol), weigh The obtained ammonium dihydrogen phosphate was slowly added to the above solution, and magnetic stirring was continued for 3 days at room temperature. After the reaction is complete, wash with deionized water and absolute ethanol, and dry in an oven to obtain vanadium pentoxide nanobelt yellow powder.

[0030] figure 1 According to the X-ray diffraction pattern of the product obtained in Example 1 of the present invention, all X-ray powder diffraction peaks can be indexed as V 2 o 5 powder, and no other impurity peaks appear, so what is synthesized in Example 1 is high-purity V 2 o 5 Powder material. figure 2 It is a scanning electron micrograph of the product obtained according to Example 1 of the present invention. It can be seen from the photo that...

Embodiment 2

[0032] Accurately weigh 11.7g (0.1mol) ammonium metavanadate, add the ammonium metavanadate that weighs into 100mL deionized water, and stir at room temperature, then accurately weigh 17.4g potassium sulfate (0.1mol), and weigh the Potassium sulfate was slowly added to the above solution, and magnetic stirring was continued for 3 days at room temperature. After the reaction is complete, wash with deionized water and absolute ethanol, and dry in an oven to obtain vanadium pentoxide nanobelt yellow powder.

Embodiment 3

[0034] Accurately weigh 90.9g (0.5mol) vanadium pentoxide and 23.4g (0.2mol) ammonium metavanadate, add the weighed vanadium pentoxide and ammonium metavanadate to 1L deionized water, stir at room temperature, and then accurately Weigh 164g of sodium acetate (2mol), slowly add the weighed sodium acetate into the above solution, and keep stirring at room temperature for 2 days. After the reaction is complete, wash with deionized water and absolute ethanol, and dry in an oven to obtain vanadium pentoxide nanobelt yellow powder. The vanadium source in the present invention is sodium divanadate, vanadium hexacarbonyl, vanadium peroxyacid, vanadium pentoxide, vanadyl sulfate, orthovanadic acid, ammonium metavanadate, vanadium dioxide, vanadium dibromide, dioxygen Vanadium chloride, vanadium dichloride, vanadium diiodide, vanadium difluoride, sodium metavanadate, potassium metavanadate, vanadium hydroxide, vanadium triiodide, vanadium trifluoride, vanadium oxytrifluoride trivanadium...

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Abstract

The invention discloses a vanadium pentoxide nanobelt, and a room-temperature synthesis method and an application of the vanadium pentoxide nanobelt, and belongs to the technical fields of nanometer materials and electrochemical energy storage. The room-temperature synthesis method of the vanadium pentoxide nanobelt, which is disclosed by the invention, comprises the following steps: adding a mineralizer to a vanadium source water solution, and then putting the vanadium source water solution with the mineralizer at room temperature to stir; and after complete reaction, washing and collecting the vanadium pentoxide nanobelt, wherein the vanadium pentoxide nanobelt is a uniform ultra-long nanobelt, is 10-20 microns in length and is 20-50 manometers in width. The synthesis method can be simple at room temperature and pressure, low in cost and high in yield, can be used for preparing the V2O5 nanobelt in large quantities, and has the characteristics of being low in cost, simple in process, convenient to operate, low in energy consumption, easy to control, convenient for large-scale production and the like; and the vanadium pentoxide nanobelt prepared by the method has good charge and discharge performances of a lithium ion battery.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and electrochemical energy storage, and more specifically relates to a vanadium pentoxide nanobelt and its normal temperature synthesis method and application. Background technique [0002] my country is extremely rich in vanadium resources and is a country with the largest reserves of vanadium resources in the world. There are many kinds of vanadium compounds, complex structures, and a wide range of uses. Among them, vanadium pentoxide (V 2 o 5 ) is an important functional material. In addition to industries such as colorants for alloys, glass and ceramic industries, sulfuric acid and catalysts for petrochemical industries, V 2 o 5 It can also be used as an energy storage material for lithium-ion batteries. V 2 o 5 Crystals belong to a typical layered structure (covalent bonds with strong binding force in the layer and weak Van der Waals force between layers), which can allow small ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G31/02B82Y30/00
CPCC01G31/02C01P2002/72C01P2004/03C01P2004/04C01P2004/17C01P2006/40
Inventor 芮先宏汤育欣
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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