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A method for preparing copper nanotubes embedded with copper oxide nanoparticles

A nanoparticle and copper oxide technology, applied in the field of nanomaterials, can solve the problems of inability to large-scale production, complex synthesis process, high cost of raw materials, etc., and achieve the effects of good product reproducibility, low cost of raw materials, and excellent cycle stability.

Active Publication Date: 2017-07-28
CHINA PETROLEUM & CHEM CORP QINGDAO RES INST OF SAFETY ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • A method for preparing copper nanotubes embedded with copper oxide nanoparticles
  • A method for preparing copper nanotubes embedded with copper oxide nanoparticles
  • A method for preparing copper nanotubes embedded with copper oxide nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] a Dissolve 0.2 g of cuprous chloride in 8 ml of oleylamine and stir for 1.5 hours to make it evenly mixed.

[0040] b Next, the above-mentioned homogeneously mixed solution was transferred into a 50 ml stainless steel reaction kettle, placed in a normal pressure oven, and the temperature was rapidly raised to 200 degrees Celsius, and stood for 3 hours.

[0041] c After the reaction is completed, the color of the solution changes from yellow to red. At this time, the reaction kettle was taken out from the oven, rinsed with cold water and rapidly cooled to room temperature (25 degrees Celsius), and the product was washed three times with n-hexane and absolute ethanol respectively to obtain a pure copper nanowire product.

[0042]d Place the above product in a closed reaction vessel full of 75% humidity air, and oxidize it in a thermostat at 60 degrees Celsius for 4 hours. After the reaction is finished, copper oxide hollow nanofibers embedded with copper oxide nanopartic...

Embodiment 2

[0051] a Weigh 2 grams of cuprous chloride and dissolve it in 80 milliliters of oleylamine, stir for 2 hours to make it evenly mixed.

[0052] b. Transfer the above homogeneously mixed solution into a 500 ml stainless steel reaction kettle, and place it in an oven at 200 degrees Celsius for 4 hours.

[0053] c After the reaction is completed, the reaction kettle is taken out from the oven, rinsed with cold water for 10 minutes to make it rapidly cooled, and the precipitated product in the kettle is washed three times with n-hexane and absolute ethanol respectively to obtain a pure copper nanowire product.

[0054] d Place the above-mentioned washed and enriched product in a tubular heating furnace with adjustable temperature and humidity, rapidly heat up to 60 degrees Celsius at 15 degrees Celsius / minute, and continue to feed humid air with a humidity of 75%. 30 sccm, after aging for 5 hours, copper oxide hollow nanofibers embedded with copper oxide nanoparticles were obtained...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/22H01M4/38H01M4/48
CPCB22F9/22H01M4/38H01M4/48H01M4/483Y02E60/10
Inventor 赵宇鑫单晓雯贾光甄永乾陶彬张卫华
Owner CHINA PETROLEUM & CHEM CORP QINGDAO RES INST OF SAFETY ENG
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