A method for preparing copper nanotubes embedded with copper oxide nanoparticles

Abstract

The invention discloses a preparation method for a copper nanotube with copper oxide nano-particles embedded therein. The preparation method comprises the following steps that cuprous chloride is dissolved in oleylamine and stirred evenly, and a mixed solution is obtained; the mixed solution is moved into a stainless steel reaction still, then the stainless steel reaction still is put into a drying box, temperature is fast raised to hydrothermal reaction temperature, and standing is carried out for a reaction; after the reaction is completed, the reaction still is taken out of the drying box and cooled to room temperature, a product in the reaction still is taken out and washed, and then a pure copper nanowire is obtained; the pure copper nanowire is put into a closed reaction vessel full of damp air, oxidization is carried out in the constant-temperature environment, and copper oxide hollowed nanofibers with copper oxide nano-particles embedded therein are obtained; and the copper oxide hollowed nanofibers with the copper oxide nano-particles embedded therein are put into atmospheric-pressure plasma equipment, hydrogen plasma surface reduction treatment is carried out, and the final product can be obtained. The method is mild and simple, the raw material cost is low, the production efficiency is high (the consumed time is short), and the product morphology is easy to regulate and control.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a method for preparing a hollowed-out copper nanotube coated with copper oxide nanoparticles, which has a high energy density and is suitable for fast charging and discharging at a large rate. Background technique [0002] Nanoparticles, nanowires, and nanocrystals of other shapes are functional nanostructures assembled as basic units, showing strong innovation potential in the field of lithium-ion battery research, because they have the following significantly different characteristics compared with macroscopic materials : [0003] (1) Extremely small lithium ion intercalation distance; [0004] (2) A free space that can effectively relieve stress changes during electrochemical cycling; [0005] (3) The rich specific surface area can increase the contact surface with the electrolyte. [0006] In recent years, researchers have been working on the development ...

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Problems solved by technology

However, the biggest problem facing this strategy is that the synthesis process is complicated, the energy consumption is high, the cost of raw materials is expensive, and it cannot be mass-produced.

It can be seen that so far, most of the research can only solve a certain part of the problem, and few reports can solve all the problems at the same time

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