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Method of synthesizing MoS2@graphene composite nanomaterial

A graphene composite and nano-material technology, applied in the direction of electrical components, electrochemical generators, battery electrodes, etc., can solve the complex synthesis process of composite materials and other problems, and achieve high uniformity of material loading, simple process, and controllable conditions Effect

Inactive Publication Date: 2016-11-16
SHANGHAI UNIV
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Problems solved by technology

Although some progress has been made in this area, the synthesis process of composite materials is relatively complex

Method used

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  • Method of synthesizing MoS2@graphene composite nanomaterial
  • Method of synthesizing MoS2@graphene composite nanomaterial
  • Method of synthesizing MoS2@graphene composite nanomaterial

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Embodiment 1

[0018] a. Weigh 30 mg of pyrolysis-reduced graphene oxide, and ultrasonically disperse it in 60 ml of pre-prepared 10 mM tris buffer;

[0019] b. Add 90 mg of dopamine to the mixed solution of a above, stir for 2 hours, and fully dissolve;

[0020] c. Add 0.2g of sodium molybdate to the above solution b, and continue to stir for 1h; then add 0.4g of thiourea, and stir for 1h;

[0021] d. Pour the reacted mixed solution into a polytetrafluoroethylene-lined autoclave and react at 200°C for 24 hours;

[0022] e. After the reaction is completed, the product is taken out from the reaction kettle, centrifuged, washed repeatedly with deionized water and ethanol, dried in vacuum at 60°C overnight, and calcined at 600°C for 2 hours in a nitrogen atmosphere to obtain MoS prepared by the present invention 2 @graphene composite nanomaterials.

[0023] The physical properties of the obtained samples were characterized, and some of the results are shown in the accompanying drawings. Fro...

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Abstract

The invention relates to a method of synthesizing MoS2@graphene composite nanomaterial. By using one-step hydrothermal synthesis and using pyrogenically-reduced graphene oxide, sodium molybdate and thiourea as raw materials, tri-hydroxymethyl aminomethane buffer as a solvent, the MoS2@graphene composite nanomaterial with uniform morphology is prepared under the assistive action of dopamine. TEM / SEM (transmission electron microscopy and scanning electron microscopy) results show that mass MoS2 ultra-thin nanosheets are grown evenly on the surface of graphene, and mesh structure is formed that tightly covers the graphene. From XRD spectrum, MoS2 crystallization is good and belongs to 2H-MoS2 crystal phase of hexagonal system. The method has simple process and controllable conditions, material loading uniformity is high, and the prepared MoS2@graphene composite nanomaterial is widely applicable to the new energy source fields such as lithium-ion battery anode materials.

Description

technical field [0001] The present invention relates to a kind of MoS 2 The synthesis method of @graphene composite nanomaterials belongs to the field of preparation of new energy materials such as lithium-ion batteries. Background technique [0002] Transition metal sulfide MS with two-dimensional layered structure 2 (M=Mo, Ti, V), usually has more active sites than zero-dimensional and one-dimensional, and can show more effective surfaces. At the same time, the two-dimensional structure has the characteristics of small weight, large surface area and uniform distribution. It shows many excellent properties in light, electricity, magnetism and so on. Among these materials, molybdenum disulfide nanomaterials (MoS 2 ), due to its high theoretical capacity and special structure, it has attracted widespread attention in the field of new energy such as lithium-ion battery anode materials. [0003] However, MoS 2 During deep discharge, severe volume expansion will inevitably ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/58H01M10/0525
CPCH01M4/5815H01M10/0525Y02E60/10
Inventor 张海娇徐来强
Owner SHANGHAI UNIV
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