Carbon-coated porous vanadium nitride nanowire film and preparation method thereof

• Main Authors: HUO KAIFU, ZHANG XUMING, GAO BIAO, FU JIJIANG, LI XINGXING, PAN ZHIGUO
• Format: Patent
• Language: English
• Published: 08.04.2015
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

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.