Rapid preparation method of manganese oxide/carbon sphere composite material for three-dimensional (3D) printing

Abstract

The invention relates to a rapid preparation method of a manganese oxide / carbon sphere composite material for three-dimensional (3D) printing. Aiming at the problems of small electrode capacity and low specific capacitance of a capacitor, the manganese oxide / carbon sphere composite material is prepared according to the steps of taking a carbon sphere as a carbon source and potassium permanganate as a manganese doping agent, preparing a solution, carrying out ultrasonic dispersing processing, synthesizing a manganese oxide / carbon sphere, carrying out washing, suction filtering and vacuum drying, and carrying out heating and sintering with vacuum microwave. The preparation method is advanced and rapid in process and accurate and full in data, a product is black powder, the particle diameter of the powder is less than or equal to 200 nanometers, the product purity reaches 99.3%, the specific capacitance index is 114F / g, the preparation method is an advanced method for rapid preparation of the manganese oxide / carbon sphere composite material, and the material can be used for a 3D printing technology.

Description

technical field [0001] The invention relates to a rapid preparation method of a manganese oxide / carbon sphere composite material for 3D printing, belonging to the technical field of preparation and application of organic carbon materials. Background technique [0002] Supercapacitor has the characteristics of large capacity, short charging time, long service life, energy saving and environmental protection. It is a new type of energy storage device. [0003] The electrode materials of supercapacitors are mainly carbon materials. The electrodes made of ordinary carbon materials have low specific capacitance and small capacity, which limits the application prospects of carbon materials as electrodes. [0004] In order to enhance the specific capacity of supercapacitors, metal oxides are often deposited on the surface of carbon-based materials, which can effectively solve the problem of low specific capacitance; among many metal oxides, manganese oxide has high specific capacit...

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Problems solved by technology

[0006] The purpose of the present invention is aimed at the situation of the background technology, with carbon spheres as carbon source, potassium permanganate as manganese dopant, through preparation solution, ultrasonic dispersion treatment, vacuum drying, vacuum sintering, grinding and sieving, to make manganese oxide / Carbon sphere composite material is used in capacitor electrodes to solve the problem of low specific capacitance of capacitor electrodes, and can also be used in 3D printing technology

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