Preparation method of vanadium oxide/carbon nanometer tube composite materials with interpenetrating network structures

A technology of interpenetrating network structure and carbon nanotubes, which is applied in the field of preparation of inorganic nanocomposite materials, can solve the problems of low electrical conductivity and application limitations, and achieve the effect of simple preparation method, good reproducibility and less usage

Active Publication Date: 2010-07-07
WUHAN UNIV OF TECH
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Problems solved by technology

However, due to the low conductivity of vanadium

Method used

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  • Preparation method of vanadium oxide/carbon nanometer tube composite materials with interpenetrating network structures
  • Preparation method of vanadium oxide/carbon nanometer tube composite materials with interpenetrating network structures
  • Preparation method of vanadium oxide/carbon nanometer tube composite materials with interpenetrating network structures

Examples

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Example Embodiment

[0024] Example 1:

[0025] (1) Add 1.0g of carbon nanotubes to 60mL of concentrated H with a volume ratio of 3:1 2 SO 4 : HNO 3 In the mixed acid, stir for 30 minutes and ultrasonic treatment for 7 hours, then dilute with deionized water and centrifuge to wash to neutrality, and dry at 80°C to obtain modified carbon nanotubes;

[0026] (2) Prepare V by melt quenching method 2 O 5 Sol, about to V 2 O 5 After the powder is melted at 800℃, quickly pour it into deionized water, then heat to boiling, stir and cool to dark red V 2 O 5 Sol

[0027] (3) Combining the carbon nanotubes and V obtained in steps (1) and (2) 2 O 5 After mixing and stirring the sol at a mass ratio of 0.2:60 for more than 1 hour, it is transferred to a stainless steel reactor with a polytetrafluoroethylene substrate, and hydrothermally reacted at 150-190°C for 1-7 days, washed and filtered with deionized water for 2-5 times. After drying at 80°C, a vanadium oxide / carbon nanotube composite material with an interpenet...

Example

[0029] Example 2~Example 9:

[0030] Example number

[0031] According to the above experimental parameters, refer to the method of Example 1 to obtain the vanadium oxide / carbon nanotube composite material of the interpenetrating network structure of the corresponding proportions.

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Abstract

The invention provides a preparation method of vanadium oxide/carbon nanometer tube composite materials with interpenetrating network structures. The carbon nanometer tubes with good conductivity are adopted for self assembly with single-dimensional vanadium oxide nanometer materials on the nanometer scale, so the carbon nanometer tubes have the effects of conductive bridges between all interwoven single-dimensional vanadium oxide nanometer materials for building interpenetrating network structures under the microcosmic dimensions, and the composite material with the structure can be used as a lithium ion injection material with high capacity and high stability. The method comprises the following preparation processes: using V2O5 collosol prepared by a quenching method as a vanadium source; using the carbon nanometer tubes dressed by sulphuric acid and nitric acid as assembly initiation sources; mixing and stirring the V2O5 collosol and the carbon nanometer tubes for more than 1 hour;then taking the reaction for 1 to 7 days through the water heating technology at 150 to 190 DEG C; washing and filtering obtained materials by deionized water for 2 to 5 times; and baking materials at 60 to 100 DEG C for obtaining the vanadium oxide/carbon nanometer tube composite materials with the interpenetrating network structures. The composite material has wide application when being used as the lithium ion injection material in the fields such as secondary lithium ion batteries, electrochromic devices, photoelectric switches, catalysis and sensors and the like.

Description

technical field [0001] The invention relates to a method for self-assembling and synthesizing a vanadium oxide / carbon nanotube composite material with an interpenetrating network structure through a sol-gel combined with a hydrothermal synthesis method, and belongs to the technical field of inorganic nanocomposite material preparation technology. Background technique [0002] Due to the large specific surface area and aspect ratio, unique anisotropic structure and nano-size effect, vanadium oxide one-dimensional nanomaterials have many exotic physical and chemical properties, which have attracted the research interest of many scholars. In particular, it is widely used as a lithium ion implantation material in rechargeable lithium ion batteries, electrochromic devices, photoelectric switches, catalysis, and sensors. However, due to the low electrical conductivity of vanadium oxide nanomaterials, its application is limited. The present invention designs and adopts carbon nano...

Claims

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Application Information

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IPC IPC(8): B82B3/00
Inventor 陈文朱泉峣胡思平周静孙华君段勇佳丽娜·扎哈若娃
Owner WUHAN UNIV OF TECH
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