One Of High Level Materials Vanadium Pentoxide Flake

Preparation and application of vanadium pentoxide flake composite materials are characterized by the use of silicon dioxide/silicon substrates, carbon nanotubes and vanadium trichloride powder as precursors, and vanadium selenide nanosheets/carbon nanotubes grown by chemical vapor deposition, and the composite materials prepared for assembling electrode materials for flexible supercapacitors. Compared with the existing technology, it has the advantages of simple process, good operation safety, high product quality, controllable structure, and no separation treatment, etc., and can be used to make electrode materials for flexible supercapacitors with high specific capacitance, high power energy density, stable cycling characteristics and excellent mechanical properties, which are used in wearable devices and have excellent electrochemical properties and fatigue properties.

1.A preparation method of thermotropic infrared emissivity vanadium pentoxide flakes, using metavanadate, citric acid and deionized water as the initial raw materials, stirring and mixing evenly according to a certain proportion, transferred to a hydrothermal kettle for hydrothermal reaction, after the reaction is over, nano vanadium dioxide powder is obtained after centrifugation, washing and vacuum drying, and then the powder is pressed into thin sheets, and the thermotropic infrared emissivity vanadium dioxide flakes are obtained after annealing treatment. The preparation process is simple, the raw materials used are non-toxic, the cost is low, and the crystallinity of the product is good; The vanadium dioxide sheet can realize the mutation of infrared emissivity near room temperature, the mutation value can reach 0.34, the mechanical strength of the sheet is high, it is not easy to break, it is convenient for machining, it can be processed into different sizes of thin slice and pasted directly to the required part in practical application, it is easy to use, and has a broad application prospect in the field of infrared stealth and military camouflage.

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