Carbon-coated vanadium trioxide nanowire thin film with pod structure and preparation method of carbon-coated vanadium trioxide nanowire thin film with pod structure

A nano-vanadium trioxide and vanadium heptoxide nano-technology, which is applied in nanotechnology, nanotechnology, structural parts, etc., can solve problems such as difficulty in forming electrode films, and achieve improved charge and discharge performance, high yield, and low energy consumption. low effect

Active Publication Date: 2016-01-20
WUHAN UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Since pure vanadium trioxide is difficult to obtain long nanowires, it is difficult to form a flexible electrode film

Method used

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  • Carbon-coated vanadium trioxide nanowire thin film with pod structure and preparation method of carbon-coated vanadium trioxide nanowire thin film with pod structure
  • Carbon-coated vanadium trioxide nanowire thin film with pod structure and preparation method of carbon-coated vanadium trioxide nanowire thin film with pod structure
  • Carbon-coated vanadium trioxide nanowire thin film with pod structure and preparation method of carbon-coated vanadium trioxide nanowire thin film with pod structure

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Effect test

Embodiment 1

[0030] A carbon-coated vanadium trioxide nanowire film with a pod structure and a preparation method thereof. The preparation method comprises the following steps: First, take 0.524 g of vanadium pentoxide yellow powder and add 40 ml of distilled water, ultrasonically for about 30 minutes, mix thoroughly to form a yellow solution, then add 0.1443 g of dihydrate oxalic acid white powder, stir for 10 minutes, and dissolve the solution in water In a hot kettle, heat in an oven at 210°C for 72 hours, and finally wash and dry the obtained vanadium heptoxide nanowires; take 50 mg of the sample and add 40 ml of distilled water, place it under a stirrer with a rotation speed of 600 r / min, and stir for 1 hour. Obtain turquoise vanadium heptoxide ultra-long nanowire dispersion; then, take 40ml of the above-mentioned uniform dispersion, then add 50-200mg of glucose, stir for 10min, mix well, and finally pour the well-mixed above-mentioned solution into a 60ml hydrothermal kettle , raise ...

Embodiment 2

[0036] A carbon-coated vanadium trioxide nanowire film with a pod structure and a preparation method thereof. The preparation method comprises the following steps: First, take 0.524 g of vanadium pentoxide yellow powder and add 40 ml of distilled water, ultrasonically for about 30 minutes, mix thoroughly to form a yellow solution, then add 0.1443 g of dihydrate oxalic acid white powder, stir for 10 minutes, and dissolve the solution in water In a hot kettle, heat in an oven at 210°C for 72 hours, and finally wash and dry the obtained vanadium heptoxide nanowires; take 50 mg of the sample and add 40 ml of distilled water, place it under a stirrer with a rotation speed of 600 r / min, and stir for 1 hour. Obtain turquoise vanadium heptoxide ultra-long nanowire dispersion; then, take 40ml of the above-mentioned uniform dispersion, then add 50-200mg of glucose, stir for 10min, mix well, and finally pour the well-mixed above-mentioned solution into a 60ml hydrothermal kettle , raise ...

Embodiment 3

[0040] A carbon-coated vanadium trioxide nanowire film with a pod structure and a preparation method thereof. The preparation method comprises the following steps: First, take 0.524 g of vanadium pentoxide yellow powder and add 40 ml of distilled water, ultrasonically for about 30 minutes, mix thoroughly to form a yellow solution, then add 0.1443 g of dihydrate oxalic acid white powder, stir for 10 minutes, and dissolve the solution in water In a hot kettle, heat in an oven at 210°C for 72 hours, and finally wash and dry the obtained vanadium heptoxide nanowires; take 50 mg of the sample and add 40 ml of distilled water, place it under a stirrer with a rotation speed of 600 r / min, and stir for 1 hour. Obtain turquoise vanadium heptoxide ultra-long nanowire dispersion; then, take 40ml of the above-mentioned uniform dispersion, then add 50-200mg of glucose, stir for 10min, mix well, and finally pour the well-mixed above-mentioned solution into a 60ml hydrothermal kettle , raise ...

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Abstract

The invention particularly relates to a carbon-coated vanadium trioxide nanowire thin film with a pod structure and a preparation method of the carbon-coated vanadium trioxide nanowire thin film with the pod structure. The method comprises the following steps: (1) preparing a V<3>O<7> nanowire; (2) taking 40ml of homogeneous dispersion liquid, adding 50-500mg of glucose, stirring the dispersion liquid for 10 minutes, mixing the dispersion liquid evenly, finally pouring the evenly mixed solution into a hydrothermal kettle, heating an oven to 180 DEG C, putting the hydrothermal kettle into the oven for heat preservation for 0.5-5 hours, cleaning the sample after a hydrothermal reaction, carrying out vacuum filtration to form a film, and drying the film in a drying oven to obtain the carbon-coated V<3>O<7> nanowire thin film; and (3) putting the dried and formed sample film into a tube furnace for heat treatment, carrying out the heat preservation in an argon condition at 400-1,000 DEG C for 3 hours, naturally cooling the film to a room temperature along with the furnace and obtaining the carbon-coated vanadium trioxide nanowire thin film with the pod structure. The preparation method is reliable in preparation technology, low in energy consumption and high in yield; and the prepared carbon-coated vanadium trioxide nanowire thin film is even in distribution, obvious in pod structure, controllable in length and suitable for the field of electrochemistry.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite structures. In particular, it relates to a pod-structured carbon-coated vanadium trioxide nanowire film and a preparation method thereof. Background technique [0002] In recent years, the excessive consumption of fossil raw materials has brought unprecedented energy crisis and environmental problems. Therefore, people are working hard to develop various new energy sources and energy storage devices, among which nanomaterials show great application prospects and are widely concerned by researchers. Theoretical and experimental research results show that, compared with ordinary powder materials, nanomaterials show more excellent performance. In particular, one-dimensional nanomaterials (such as nanowires, nanotubes, nanobelts, etc.) have one-dimensional electron transport channels, so compared with ordinary powder materials, they show more excellent photoelectrochemical properties. V 2 o ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/48H01M4/62H01M10/0525B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/48H01M4/625H01M4/628H01M10/0525Y02E60/10
Inventor 高标李星星付继江霍开富潘志国张旭明彭祥
Owner WUHAN UNIV OF SCI & TECH
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