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Carbon frame nanoribbons equipped with mos 2 Nanosphere nanocomposite material and preparation method thereof

A nano-composite material and nano-sphere technology are applied in the field of layered MoS2 nano-sphere material preparation and lithium ion battery anode material field to achieve the effects of large electric capacity, enhanced stability and low production cost

Inactive Publication Date: 2018-01-16
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, a variety of nanocomposite structural systems based on nanocarbon materials have attracted the attention of many researchers, but there is no MoS in the prior art. 2 Research and Application of Nanocomposite Structure of Nanospheres and Radial Carbon Frame Nanobelts

Method used

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  • Carbon frame nanoribbons equipped with mos <sub>2</sub> Nanosphere nanocomposite material and preparation method thereof
  • Carbon frame nanoribbons equipped with mos <sub>2</sub> Nanosphere nanocomposite material and preparation method thereof
  • Carbon frame nanoribbons equipped with mos <sub>2</sub> Nanosphere nanocomposite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1 Preparation of onion-layered MoS on radial carbon frame nanoribbons 2 nanosphere nanocomposite

[0047] The specific steps of preparation are as follows:

[0048] (1) Dissolve 0.8g of sodium molybdate, 1.5g of thioacetamide, and thioacetamide in 120mL of deionized water, add about 0.8g of oxalic acid to adjust the pH of the solution, and stir well.

[0049] (2) After stirring for more than 30 minutes, add the mixed solution into a 150mL reaction kettle, seal it, then put it into an oven and heat it at 200°C for 24 hours, and cool to room temperature after the reaction is completed.

[0050] (3) Collect and remove the black precipitate at the bottom of the reaction kettle and the black adhesion on the inner wall, and wash it repeatedly with deionized water until the supernatant is completely clear.

[0051] (4) Pour off the supernatant, put the pure sample in a vacuum oven at 60° C. for 5 hours and take it out after drying to obtain a black powder.

[0052] ...

Embodiment 2

[0055] Example 2 Radial carbon frame nanobelts of the present invention equipped with onion-layered MoS 2 Performance testing of nanosphere nanocomposites as anode materials for lithium-ion batteries

[0056] Onion-layered MoS mounted on radial carbon frame nanoribbons prepared in Example 1 above 2 Nanosphere nanocomposite due to its large storage capacity of MoS 2 As the main material, nanospheres have a relatively stable carbon nanostructure, and carbon nanomaterials can further improve the conductivity of the material, making it comparable to other MoS 2 Nanomaterials have significant advantages in the application performance of lithium-ion battery anode materials. Onion layered MoS mounted on the radial carbon frame nanoribbon of the present invention 2 The performance test of the nanosphere nanocomposite material as the anode material of the lithium ion battery includes the following specific steps:

[0057] (1) Take the radial carbon frame nanoribbon of the present i...

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Abstract

The invention discloses a nanocomposite with radial carbon framework nanoribbons carrying onion lamellar MoS2 nanoscale spheres. The nanocomposite takes the onion lamellar MoS2 nanoscale spheres as a carried object and the radial carbon framework nanoribbons as a carrying basic framework material to form a stable structure; a framework of the radial carbon framework nanoribbons is formed by crossing of the thin carbon framework nanoribbons about 1.5-2.0 micrometers in length and 80-100nm in width into a radial clearance shape, and the onion lamellar MoS2 nanoscale spheres are distributed in clearances of the radial carbon framework nanoribbons uniformly to form a stable carrying structure. The invention further discloses a preparation method of the nanocomposite and further provides application of the nanocomposite as a lithium ion battery anode material. The preparation method is high in repeatability, low in cost and simple in preparation conditions. The lithium ion battery anode material has the advantages of high stability and electrical conductivity, large contact specific surface area, high cycling stability and the like.

Description

technical field [0001] The invention relates to the technical field of transition metal sulfides, semiconductor materials and lithium-ion batteries, in particular to a radial carbon frame nanoribbon carrying onion-layered MoS 2 Preparation of nano-sphere materials and their application methods in lithium-ion battery anode materials. Background technique [0002] MoS 2 It is a new type of layered transition metal sulfide. Its structure is a two-dimensional layered structure composed of two layers of sulfur atoms and a layer of molybdenum atoms. It has a stable layered structure, large surface area and Good mechanical flexibility, showing good application potential in the fields of supercapacitors, lithium batteries and sensors. Due to MoS 2 With unique physical and chemical properties, it is also a good anode material for lithium batteries, and its graphene-like layered structure can store lithium ions well. But since MoS 2 It is a nano-sheet layered structure. During th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/583H01M4/62H01M4/58H01M10/0525
CPCH01M4/366H01M4/5815H01M4/583H01M4/625H01M10/0525Y02E60/10
Inventor 郭邦军郁可朱自强
Owner EAST CHINA NORMAL UNIV
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