Multi-element composite nano-material, preparation method thereof and application thereof

Abstract

The invention provides a multi-element composite nano-material for a super capacitor, and a preparation method of the nano-material. The nano-material comprises a carbon material, metal oxide and conducting polymer, and components of the nano-material can be two or more than two materials. By the aid of the characteristics such as fine electrical conductivity, long cycle life and high specific surface area of the carbon material, high pseudo-capacitance of the metal oxide and low internal resistance, low cost and high operating voltage of the conducting polymer, different types of electrode materials generate synergistic effects, advantages are mutually combined, shortcomings are mutually weakened, the energy storage characteristics of an electric double-layer capacitor and a pseudo-capacitor are simultaneously made full use of, a composite electrode material with high power density, fine circulating stability and higher energy density is prepared, and the multi-element composite nano-material is excellent in comprehensive performance when used for an electrode of the super capacitor, has the advantages of simple preparation process, short cycle, low cost and the like, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the fields of electrochemistry and nanocomposite materials, in particular, the invention relates to a multi-component composite nanomaterial, its preparation method and its application. Background technique [0002] In recent years, in order to solve the problems of the depletion of global resources and energy and the deterioration of the human ecological environment, modern society requires the large-scale use of energy storage devices with high energy density, high power density, and environmentally friendly energy storage devices, making the research of supercapacitors a priority for countries all over the world. An important topic of concern to researchers. Electrode material is one of the main factors affecting the performance of supercapacitors. Only by developing high-performance electrode materials can high-performance supercapacitors be produced. At present, there are many studies on single carbon materials, metal oxi...

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Problems solved by technology

However, the metal oxides used in this patent are only oxides of nickel and manganese, which has great limitations on the composition of the composite material, and the above-mentioned patent does not examine the electrochemical performance of the composite nanomaterial to make it feasible in practical applications hindered

[0007] CN102280263A discloses an electrochemical capacitor as an electrode, the electrode material used in the capacitor is a carbon nanotube / manganese oxide composite material, and the composite material is prepared by magnetron sputtering and chemical vapor deposition in the preparation process, but This patent not only has high cost and complicated preparation process, but also is not suitable for large-scale production