A kind of manganese/iron/carbon nanocomposite material and its preparation and application

Abstract

The invention relates to a manganese / iron / carbon nanocomposite material and its preparation and application, which are specifically as follows: (a) adding m-aminophenol formaldehyde resin spheres into an aqueous solution of an inorganic iron source, stirring, filtering, washing and drying to obtain m-aminophenol formaldehyde resin ball / iron precursor; (b) dispersing m-aminophenol formaldehyde resin ball / iron precursor into a dispersion, then adding m-aminophenol and formaldehyde in sequence, stirring, filtering, washing and drying to obtain m-aminophenol formaldehyde resin ball / iron precursor Aminophenol formaldehyde resin ball / iron / m-aminophenol formaldehyde resin ball precursor; (c) adding m-aminophenol formaldehyde resin ball / iron / m-aminophenol formaldehyde resin ball precursor to the inorganic manganese source aqueous solution, stirring, filtering, After washing and drying, m-aminophenol formaldehyde resin balls / iron / m-aminophenol formaldehyde resin balls / manganese precursors are obtained, and then calcined in an inert atmosphere to obtain manganese / iron / carbon composite nanomaterials. Compared with the prior art, the present invention has simple process and low cost.

Description

technical field [0001] The invention relates to the field of nanomaterial preparation, in particular to a manganese / iron / carbon nanocomposite material and its preparation and application. Background technique [0002] The two severe tests that human beings must face in the 21st century are energy crisis and environmental pollution, so the development of clean energy has very important practical significance. At present, all kinds of vehicles account for a considerable proportion of energy use, and exhaust emissions caused by the use of conventional energy sources (such as petroleum) are also an important cause of environmental pollution. Therefore, countries all over the world attach great importance to the development of electric vehicles. Nowadays, the types of power batteries include lithium-ion batteries, nickel-hydrogen batteries, and fuel cells. As a new type of energy storage device with high output power and long cycle life—supercapacitors, naturally, many researcher...

AI Technical Summary

Problems solved by technology

[0003] Metal oxides such as manganese dioxide have high specific capacitance and are an important electrode material for electrochemical supercapacitors and lithium-ion batteries, but their conductivity is relatively poor, which prevents further improvement of electrochemical performance.

At present, researchers have prepared manganese oxide into carbon / manganese oxide composite materials through co-precipitation, electrodeposition, hydrothermal and in-situ growth methods to improve the conductivity of electrode materials. There are patents and literature reports: using impregnation The manganese oxide / carbon composite material is prepared by the method, that is, the porous carbon is synthesized first, and then the manganese precursors such as manganese nitrate, manganese chloride and other solutions are soaked, and then roasted at a high temperature to obtain the carbon / manganese oxide composite material, but the prepared Conductivity of carbon / manganese oxide composites still falls short of expectations

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