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Method for preparing carbon-loaded metal sulfide nanocomposite through electrostatic spinning

A nanocomposite, electrospinning technology, applied in the direction of circuits, electrical components, battery electrodes, etc., can solve the problems of many steps, the inability to combine metal sulfides and carbon materials, etc., to achieve increased conductivity and good electrochemical performance. performance, the effect of simplifying the manufacturing process

Active Publication Date: 2019-05-28
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method has many steps, and it cannot ensure that the metal sulfide and the carbon material are tightly combined, and cannot be used as an independent electrode directly as a negative electrode material.

Method used

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  • Method for preparing carbon-loaded metal sulfide nanocomposite through electrostatic spinning
  • Method for preparing carbon-loaded metal sulfide nanocomposite through electrostatic spinning
  • Method for preparing carbon-loaded metal sulfide nanocomposite through electrostatic spinning

Examples

Experimental program
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Effect test

Embodiment 1

[0043] As shown in the figure, the method for preparing carbon-supported metal sulfide nanocomposites by electrospinning includes the following steps:

[0044] (1) Preparation of spinning precursor solution

[0045] Weigh 0.3g of load-thiacalixarene metal clusters (such as: Co 16 、Co 32 or Co 48) was dissolved in DMF (N,N-dimethylformamide), sealed with a parafilm, and stirred on a magnetic stirrer at room temperature until it was completely dissolved; at the same time, a certain proportion of spinning aid-PAN (poly Acrylonitrile) was dissolved in DMF, and stirred on a magnetic stirrer after sealing to form a uniform transparent solution; wherein the mass concentration of spinning aid was 6.8%, and the mass concentration of the load relative to spinning aid was 30%; finally The two parts of the solution are mixed together, sealed and stirred evenly, which is the spinning precursor solution;

[0046] (2) Preparation of nanofibers by electrospinning

[0047] Inhale the prep...

Embodiment 2

[0053] As shown in the figure, the method for preparing carbon-supported metal sulfide nanocomposites by electrospinning includes the following steps:

[0054] (1) Preparation of spinning precursor solution

[0055] Weigh 0.3g of load-thiacalixarene metal clusters (such as: Co 16 、Co 32 or Co 48 ) was dissolved in DMF (N,N-dimethylformamide), sealed with a parafilm, and stirred on a magnetic stirrer at room temperature until it was completely dissolved; at the same time, a certain proportion of spinning aid was weighed and dissolved in DMF ; The spinning aid is a mixture of PAN and PMMA; the mass ratio of PAN and PMMA is 7:3, and after sealing, it is stirred into a uniform transparent solution on a magnetic stirrer; wherein the mass concentration of the spinning aid is 10%, The concentration of the load relative to the spinning aid is 50%; finally, the two parts of the solution are mixed together, sealed and stirred evenly, which is the spinning precursor solution;

[0056...

Embodiment 3

[0063] (1) Preparation of spinning precursor solution

[0064] Weigh 0.3g of load-thiacalixarene metal clusters (such as: Co 16 、Co 32 or Co 48 ) was dissolved in DMF (N,N-dimethylformamide), sealed with a parafilm, and stirred on a magnetic stirrer at room temperature until it was completely dissolved; at the same time, a certain proportion of spinning aid was weighed and dissolved in DMF ; The spinning aid is a mixture of PAN and PMMA; the mass ratio of PAN and PMMA is 1:1; after sealing, it is stirred on a magnetic stirrer to form a uniform transparent solution. The concentration of the spinning aid is 12.4%, and the concentration of the load relative to the spinning aid is 40%; finally, the two parts of the solution are mixed together, sealed and stirred evenly, which is the spinning precursor solution;

[0065] (2) Preparation of nanofibers by electrospinning

[0066] Inhale the prepared spinning precursor solution into the syringe, remove air bubbles, adjust the syri...

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Abstract

The invention belongs to the field of metal sulfide nano-materials, and particularly relates to a method for preparing a carbon-loaded metal sulfide nanocomposite through electrostatic spinning, whichcomprises the following steps: (1) preparing a spinning precursor solution: respectively dissolving a thiacalixarene metal cluster compound and a spinning aid in DMF (Dimethyl Formamide), and mixing;(2) preparing nano-fibers by electrostatic spinning: sucking the obtained spinning precursor solution into an injector, adjusting the pump flow rate and voltage of the injector and the distance between a spinning needle and a receiving plate, spinning, and receiving a nano-fiber felt by the receiving plate; (3) pre-oxidizing the nano-fiber felt: pre-oxidizing the collected nano-fiber felt; and (4) carbonizing in an N2 atmosphere: carbonizing the pre-oxidized nano-fiber felt, and naturally cooling to obtain the target product. The target product is ideal in electrochemical performance and goodin capacitance characteristic, the flaky carbon material is directly used as an electrode, additives or impurities such as a binding agent can be eliminated, and the energy capacity and performance are improved.

Description

technical field [0001] The invention belongs to the field of metal sulfide nanomaterials, in particular to a method for preparing carbon-loaded metal sulfide nanocomposites by electrospinning. Background technique [0002] Transition metal sulfides have a wide range of sources and abundant active sites, and they are developing rapidly because they can be used as electrode materials for energy storage components, such as anode materials for lithium-ion batteries. However, it also has problems such as poor conductivity, serious volume expansion, and easy agglomeration, which make its cycle stability poor. Carbon materials have excellent electrical conductivity and can effectively inhibit volume expansion. Therefore, the modification of transition metal sulfides with carbon materials can not only combine the advantages of the two, but also make up for these shortcomings, and realize the improvement of material performance. However, there are some problems in the existing techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62
CPCY02E60/10
Inventor 赵桂艳艾绯雪毕研峰胡跃鑫杨思然
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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