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A carbon-coated porous vanadium nitride nanowire film and its preparation method

A vanadium nitride nanometer and vanadium pentoxide nanometer technology, which is applied in the field of carbon-coated porous vanadium nitride nanowire films and their preparation, can solve problems such as the inability to form electrode films, and achieves alleviation of volume changes and uniform size distribution. , the effect of excellent electrochemical performance

Inactive Publication Date: 2017-01-04
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because vanadium nitride is relatively brittle, pure vanadium nitride cannot form a flexible electrode film

Method used

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  • A carbon-coated porous vanadium nitride nanowire film and its preparation method
  • A carbon-coated porous vanadium nitride nanowire film and its preparation method
  • A carbon-coated porous vanadium nitride nanowire film and its preparation method

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Embodiment 1

[0034] A method for preparing a carbon-coated porous vanadium nitride nanowire film. First, dissolve 2.73g of vanadium pentoxide in 25ml of hydrogen peroxide, then add distilled water until the solution volume is 300ml, and stir for 0.5h to form an orange-red transparent solution. Pour the transparent liquid into a hydrothermal kettle and place it in a drying oven at 180°C Under the condition of water heat for 96h, finally, wash out the obtained vanadium pentoxide nanowire; dilute the cleaned sample to a certain concentration with deionized water, take 100mL of the dispersion and stir evenly, add Tris (trishydroxymethylaminomethane) After stirring for 2 minutes, add 10-30 mg of dopamine hydrochloride, and stir for 0.5-1 hour until the solution is dark green. Wash the polymerized sample with deionized water, place it in a drying oven, and dry it at 60 degrees for 12 hours to obtain PDA-coated dioxypentoxide Vanadium nanowire film; the dried sample film was placed in a tube furn...

Embodiment 2

[0041] A method for preparing a carbon-coated porous vanadium nitride nanowire film. First, dissolve 2.73g of vanadium pentoxide in 25ml of hydrogen peroxide, then add distilled water until the solution volume is 300ml, and stir for 0.5h to form an orange-red transparent solution. Pour the transparent liquid into a hydrothermal kettle and place it in a drying oven at 180°C Under the condition of water heat for 96h, finally, wash out the obtained vanadium pentoxide nanowire; dilute the cleaned sample to a certain concentration with deionized water, take 100mL of the dispersion and stir evenly, add Tris (trishydroxymethylaminomethane) After stirring for 2 minutes, add 10-30 mg of dopamine hydrochloride, stirring for 1-2 hours until the solution is dark green, wash the polymerized sample with deionized water, put it in a drying oven, and dry at 60 degrees for 12 hours to obtain PDA-coated vanadium pentoxide Nanowire thin film; the dried sample film was placed in a tube furnace fo...

Embodiment 3

[0044] A method for preparing a carbon-coated porous vanadium nitride nanowire film. First, dissolve 2.73g of vanadium pentoxide in 25ml of hydrogen peroxide, then add distilled water until the solution volume is 300ml, and stir for 0.5h to form an orange-red transparent solution. Pour the transparent liquid into a hydrothermal kettle and place it in a drying oven at 180°C Under the condition of water heat for 96h, finally, wash out the obtained vanadium pentoxide nanowire; dilute the cleaned sample to a certain concentration with deionized water, take 100mL of the dispersion and stir evenly, add Tris (trishydroxymethylaminomethane) After stirring for 2 minutes, add 30-50 mg of dopamine hydrochloride, stirring for 2-4 hours until the solution is dark green, wash the polymerized sample with deionized water, put it in a drying oven, and dry at 60 degrees for 12 hours to obtain PDA-coated vanadium pentoxide Nanowire thin film; the dried sample film was placed in a tube furnace fo...

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Abstract

The invention specifically relates to a carbon-coated porous vanadium nitride nanowire film and a preparation method thereof. The preparation method comprises the following steps: 1) preparing vanadium pentoxide nanowires, and diluting the vanadium pentoxide nanowires by water to obtain a dispersion liquid with a concentration of 0.3mg / mL; 2) taking 100mL of the dispersion and uniformly stirring, adding trishydroxymethyl aminomethane buffering liquid and then stirring, then adding 10-200mg of dopamine hydrochloride, stirring for 0.5-4h until the solution is dark green, cleaning the polymerized sample by deionized water, and drying in a drying box to obtain a polydopamine-coated vanadium pentoxide nanowire film; 3) placing the dried-formed sample film in a tubular furnace and carrying out a heat treatment, insulating for 3h at 300-1000 DEG C under an NH3 condition, and naturally cooling to a room temperature with the furnace, so as to obtain the carbon-coated porous vanadium nitride nanowire film. The method disclosed by the invention is reliable in preparation process, low in energy consumption and high in yield; the prepared carbon-coated porous vanadium nitride nanowires are uniform in distribution, obvious in pore 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. Specifically relates to a carbon-coated porous vanadium nitride nanowire film and a preparation method thereof. Background technique [0002] In recent years, due to the huge application prospects of nanomaterials, they have attracted extensive attention from 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. VN is a transition metal nitride, due to its large theoretical capacity, high electronic conductivity, and wide potential window range [Xihong Lu, Minghao Yu, Teng Zhai, Gongming Wang, Shilei Xie, Tianyu Liu, Chaolun Liang, Ye...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/58H01G11/36
CPCB82Y30/00B82Y40/00H01G11/30H01G11/36H01M4/58H01M4/628Y02E60/10
Inventor 霍开富高标潘志国李星星付继江张旭明
Owner WUHAN UNIV OF SCI & TECH
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