A kind of preparation method of nitrogen-doped graphitized carbon/transition metal oxide nanocomposite material

Abstract

The invention belongs to the technical field of a nanocomposite of a transition metal oxide, and relates to a preparation method of nanocomposite of nitrogen doped graphitized carbon / transition metal oxide, which is applied to the preparation of electrode materials, and used for solving the difficulties that the preparation steps are too much, the time waste is long and the specific capacitance of the composite is low and not good for the material application, and can simply and efficiently prepare the nanocomposite of nitrogen doped graphitized carbon / transition metal oxide; biopolymer chitosan containing nitrogen element is used as structure-directing agent and organic precursor; the transition metal salt is used as reactant; through co-precipitation reaction, the composite is prepared; the nanocomposite of nitrogen doped graphitized carbon / transition metal oxide is prepared by using the transition metal catalysis graphitizing function after the inert atmosphere calcination. The preparation technique is simple in step, energy-saving and environment-friendly, reliable in principle, low in preparation cost, good in electrochemical performance, high in conductive property, wide in application, friendly in environment; besides, the preparation method has good economic benefit and extensive market prospect.

Description

Technical field: [0001] The invention belongs to the technical field of preparation of transition metal oxide nanocomposite materials, and relates to a method for preparing nitrogen-doped graphitized carbon / transition metal oxide nanocomposite materials, which is used in the preparation of electrode materials. Background technique: [0002] Supercapacitor (supercapacitor referred to as SC) is a new type of energy storage device, which has the advantages of high power density, fast charging and discharging, and long cycle life. The key to its excellent performance is the SC electrode material. SC electrode materials generally include carbon materials, Metal oxides, metal hydroxides and conductive polymers, carbon materials include graphene, carbon nanotubes, activated carbon and mesoporous carbon, among which, the six-membered ring structure in graphene and carbon nanotubes is conducive to electron transport; activated carbon Compared with mesoporous carbon, it has a high spe...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing synthesis technology, and propose a method for preparing nitrogen-doped graphitized carbon / transition metal oxide nanocomposites, which solves the problem of many preparation steps, long time consumption, and low specific capacitance of the composite. Difficulties in material application, easy and efficient preparation of nitrogen-doped graphitized carbon / transition metal oxide nanocomposites

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